Description
An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.10.24-1 | — |
| Debian 13 | linux | 5.10.24-1 | — |
| Debian 12 | linux | 5.10.24-1 | — |
| Debian 9 | linux | 4.9.258-1 | DLA-2586-1 |
| Debian 9 | linux-4.19 | 4.19.181-1~deb9u1 | DLA-2610-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-70.78 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1041.43 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1043.45 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1040.43 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1039.41 | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1012.13 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | 5.8.0-48.54~20.04.1 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1036.37 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-oem-5.10 | 5.10.0-1019.20 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-oem-5.6 | 5.6.0-1052.56 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1041.44 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1032.35 | USN-4887-1 |
| Ubuntu 20.04 LTS | linux-riscv +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.8 | 5.8.0-20.22~20.04.1 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-139.143 | USN-4883-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1096.103 | USN-4883-1 |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1041.43~18.04.1 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1110.122 | USN-4883-1 |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1043.45~18.04.1 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1015.19 | — |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1095.108 | USN-4883-1 |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1040.43~18.04.1 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-gke-5.3 | 5.3.0-1041.44 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-gke-5.4 | 5.4.0-1039.41~18.04.1 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1012.13~18.04.1 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-hwe | 5.3.0-72.68 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-70.78~18.04.1 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1087.89 | USN-4883-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1067.75 | USN-4883-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1041.44~18.04.1 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1032.35~18.04.1 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1081.86 | USN-4883-1 |
| Ubuntu 18.04 LTS | linux-raspi2-5.3 | 5.3.0-1038.40 | USN-4887-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1098.107 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-206.238 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1124.138 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1096.103~16.04.1 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1110.122~16.04.1 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1095.108~16.04.1 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-139.143~16.04.1 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1090.99 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1067.75~16.04.1 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1148.158 | USN-4883-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1152.162 | USN-4883-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2039.41 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2022.25 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1055.63 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1058.64 | — |
| Ubuntu Pro 14.04 LTS | linux | 3.13.0-185.236 | USN-4889-1 |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1088.92 | USN-4883-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1110.122~14.04.1 | USN-4883-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-206.238~14.04.1 | USN-4889-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-240.22.1.rt7.77.el8_3 | RHSA-2021:1081 |
| RHEL 8 | perf +26 | 4.18.0-240.22.1.el8_3 | RHSA-2021:1093 |
| RHEL 7 | kernel +15 | 3.10.0-1160.24.1.el7 | RHSA-2021:1379, RHSA-2021:1071 |
| RHEL 7 | kernel-alt | 4.14.0-115.36.1.el7a | RHSA-2021:1379 |
| RHEL 7 | kernel-rt +10 | 3.10.0-1160.24.1.rt56.1161.el7 | RHSA-2021:1070 |
| RHEL 7 | kpatch-patch-3_10_0-1160 +3 | 1-5.el7 | RHSA-2021:1069 |
| RHEL 7 | kpatch-patch-3_10_0-1160_11_1 +1 | 1-4.el7 | RHSA-2021:1069 |
| RHEL 7 | kpatch-patch-3_10_0-1160_21_1 | 1-2.el7 | RHSA-2021:1069 |
| RHEL 7 | perf +2 | 3.10.0-957.72.1.el7 | RHSA-2021:1379, RHSA-2021:1376, RHSA-2021:1071 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.2 EUS | kernel-rt +12 | 4.18.0-193.51.1.rt13.101.el8_2 | RHSA-2021:1279 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193 | 1-13.el8 | RHSA-2021:1295 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_13_2 +2 | 1-8.el8_2 | RHSA-2021:1295 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_1_2 | 1-11.el8_2 | RHSA-2021:1295 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_28_1 +4 | 1-6.el8_2 | RHSA-2021:1295 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_46_1 +1 | 1-3.el8_2 | RHSA-2021:1295 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_6_3 | 1-10.el8_2 | RHSA-2021:1295 |
| RHEL 8.2 EUS | perf +26 | 4.18.0-193.51.1.el8_2 | RHSA-2021:1272 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_13_2 | 1-9.el8_1 | RHSA-2021:1173 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_20_1 | 1-8.el8_1 | RHSA-2021:1173 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_24_2 +1 | 1-6.el8_1 | RHSA-2021:1173 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_32_1 +1 | 1-4.el8_1 | RHSA-2021:1173 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_38_1 | 1-3.el8_1 | RHSA-2021:1173 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_43_1 | 1-1.el8_1 | RHSA-2021:1173 |
| RHEL 8.1 EUS | perf +26 | 4.18.0-147.44.1.el8_1 | RHSA-2021:1171 |
| RHEL 7.7 EUS | kpatch-patch-3_10_0-1062_26_1 +9 | 1-3.el7 | RHSA-2021:1532 |
| RHEL 7.7 EUS | kpatch-patch-3_10_0-1062_46_1 | 1-2.el7 | RHSA-2021:1532 |
| RHEL 7.7 EUS | perf +18 | 3.10.0-1062.49.1.el7 | RHSA-2021:1531 |
| RHEL 7.6 EUS | kpatch-patch-3_10_0-957_54_1 +7 | 1-3.el7 | RHSA-2021:1377 |
| RHEL 7.6 EUS | kpatch-patch-3_10_0-957_70_1 | 1-2.el7 | RHSA-2021:1377 |
| RHEL 7.6 EUS | perf +18 | 3.10.0-957.72.1.el7 | RHSA-2021:1376 |
| RHEL 7.4 TUS | perf +11 | 3.10.0-693.84.1.el7 | RHSA-2021:1267 |
| RHEL 7.4 E4S | perf +13 | 3.10.0-693.84.1.el7 | RHSA-2021:1267 |
| RHEL 7.4 AUS | perf +11 | 3.10.0-693.84.1.el7 | RHSA-2021:1267 |
| RHEL 7.3 AUS | perf +11 | 3.10.0-514.88.1.el7 | RHSA-2021:1373 |
| RHEL 7.2 AUS | perf +11 | 3.10.0-327.96.1.el7 | RHSA-2021:1289 |
| RHEL 6 ELS | perf +13 | 2.6.32-754.39.1.el6 | RHSA-2021:1288 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-abi-whitelists +1 | 4.18.0-240.22.1.el8_3 | ALSA-2021:1093 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +5 | 5.3.18-59.5.2 | SUSE-SU-2021:1977-1 |
| SLES 15 SP3 | kernel-azure +2 | 5.3.18-38.3.1 | SUSE-SU-2021:1975-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-59.5.2.18.2.2 | SUSE-SU-2021:1977-1 |
| SLES 15 SP3 | kernel-syms +1 | 5.3.18-59.5.1 | SUSE-SU-2021:1977-1 |
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.41.1 | SUSE-SU-2021:1177-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.61.1.9.26.4 | SUSE-SU-2021:1238-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-24.61.1 | SUSE-SU-2021:1238-1 |
| SLES 15 SP1 | kernel-docs | 4.12.14-197.89.3 | SUSE-SU-2021:1624-1 |
| SLES 15 SP1 | kernel-syms +4 | 4.12.14-197.89.2 | SUSE-SU-2021:1624-1 |
| SLES 15 | kernel-docs | 4.12.14-150.72.2 | SUSE-SU-2021:1573-1 |
| SLES 15 | kernel-syms +5 | 4.12.14-150.72.1 | SUSE-SU-2021:1573-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.50.1 | SUSE-SU-2021:1175-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.66.2 | SUSE-SU-2021:1210-1 |
Show 29 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.74.1 | SUSE-SU-2021:1596-1 |
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.144.1 | SUSE-SU-2021:1623-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_38 | 2-2.2 | SUSE-SU-2021:1074-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_39 | 1-4.3.1 | SUSE-SU-2021:1623-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.155.1 | SUSE-SU-2021:1617-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.126.1 | SUSE-SU-2021:14724-1 |
| SLES for SAP 15 SP1 | kernel-docs | 4.12.14-197.89.3 | SUSE-SU-2021:1624-1 |
| SLES for SAP 15 SP1 | kernel-syms +3 | 4.12.14-197.89.2 | SUSE-SU-2021:1624-1 |
| SLES for SAP 15 | kernel-docs | 4.12.14-150.72.2 | SUSE-SU-2021:1573-1 |
| SLES for SAP 15 | kernel-syms +4 | 4.12.14-150.72.1 | SUSE-SU-2021:1573-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.50.1 | SUSE-SU-2021:1175-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.66.2 | SUSE-SU-2021:1210-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.74.1 | SUSE-SU-2021:1596-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.144.1 | SUSE-SU-2021:1623-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_38 | 2-2.2 | SUSE-SU-2021:1074-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_39 | 1-4.3.1 | SUSE-SU-2021:1623-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.37.1 | SUSE-SU-2021:1176-1 |
| SLE Micro 5.0 | kernel-default | 5.3.18-24.61.1 | SUSE-SU-2021:1238-1 |
| SLE Micro 5.0 | kernel-default-base | 5.3.18-24.61.1.9.26.4 | SUSE-SU-2021:1238-1 |
| SLE Micro 5.0 | kernel-rt | 5.3.18-8.7.1 | SUSE-SU-2021:1625-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-59.5.2 | SUSE-SU-2021:1977-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_1 | 1-7.5.1 | SUSE-SU-2021:1977-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.61.1 | SUSE-SU-2021:1238-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_12 | 1-5.3.4 | SUSE-SU-2021:1238-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_15 | 2-2.1 | SUSE-SU-2021:2577-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.89.2 | SUSE-SU-2021:1624-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_10 | 11-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_11 | 10-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_12 +2 | 8-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_15 | 7-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_16 | 6-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_17 | 5-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_18 | 5-2.3 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_19 +2 | 4-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_22 | 3-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_23 | 2-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_24 | 1-3.3.2 | SUSE-SU-2021:1624-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.72.1 | SUSE-SU-2021:1573-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_18 +1 | 8-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_20 | 7-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_21 | 5-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_22 | 3-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_23 | 2-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_24 | 1-1.3.1 | SUSE-SU-2021:1573-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.66.2 | SUSE-SU-2021:1210-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_10 | 8-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_11 +1 | 6-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_13 +1 | 4-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_15 | 3-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_16 | 2-2.2 | SUSE-SU-2021:1046-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_17 | 1-8.3.2 | SUSE-SU-2021:1210-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_4 | 11-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_5 +3 | 10-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_9 | 9-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.74.1 | SUSE-SU-2021:1596-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_13 | 10-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_14 +1 | 8-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_16 | 7-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_17 | 4-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_18 | 3-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_19 | 2-2.2 | SUSE-SU-2021:1075-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_20 | 1-6.3.1 | SUSE-SU-2021:1596-1 |
| SLE HPC 15 SP1 | kernel-docs | 4.12.14-197.89.3 | SUSE-SU-2021:1624-1 |
| SLE HPC 15 SP1 | kernel-syms +3 | 4.12.14-197.89.2 | SUSE-SU-2021:1624-1 |
| SLE HPC 15 | kernel-docs | 4.12.14-150.72.2 | SUSE-SU-2021:1573-1 |
| SLE HPC 15 | kernel-syms +4 | 4.12.14-150.72.1 | SUSE-SU-2021:1573-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +3 | 5.3.18-33.1 | SUSE-SU-2021:1211-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.74.1 | SUSE-SU-2021:1596-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.144.1 | SUSE-SU-2021:1623-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_39 | 1-4.3.1 | SUSE-SU-2021:1623-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.74.1 | SUSE-SU-2021:1596-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.144.1 | SUSE-SU-2021:1623-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_39 | 1-4.3.1 | SUSE-SU-2021:1623-1 |
| SUSE Manager Server 4.0 | kernel-docs | 4.12.14-197.89.3 | SUSE-SU-2021:1624-1 |
| SUSE Manager Server 4.0 | kernel-syms +4 | 4.12.14-197.89.2 | SUSE-SU-2021:1624-1 |
| SUSE Manager Retail Branch Server 4.0 | kernel-docs | 4.12.14-197.89.3 | SUSE-SU-2021:1624-1 |
| SUSE Manager Retail Branch Server 4.0 | kernel-syms +3 | 4.12.14-197.89.2 | SUSE-SU-2021:1624-1 |
| SUSE Manager Proxy 4.0 | kernel-docs | 4.12.14-197.89.3 | SUSE-SU-2021:1624-1 |
| SUSE Manager Proxy 4.0 | kernel-syms +3 | 4.12.14-197.89.2 | SUSE-SU-2021:1624-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.144.1 | SUSE-SU-2021:1623-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_39 | 1-4.3.1 | SUSE-SU-2021:1623-1 |
| SUSE Enterprise Storage 6 | kernel-docs | 4.12.14-197.89.3 | SUSE-SU-2021:1624-1 |
| SUSE Enterprise Storage 6 | kernel-syms +3 | 4.12.14-197.89.2 | SUSE-SU-2021:1624-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | kernel-64kb +7 | 5.3.18-59.5.2 | openSUSE-SU-2021:1977-1 |
| openSUSE Leap 15.3 | kernel-azure +2 | 5.3.18-38.3.1 | openSUSE-SU-2021:1975-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-59.5.2.18.2.2 | openSUSE-SU-2021:1977-1 |
| openSUSE Leap 15.3 | kernel-syms +2 | 5.3.18-59.5.1 | openSUSE-SU-2021:1977-1 |
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.69.1.lp152.8.28.1 | openSUSE-SU-2021:0532-1 |
| openSUSE Leap 15.2 | kernel-docs +8 | 5.3.18-lp152.69.1 | openSUSE-SU-2021:0532-1 |
| openSUSE Leap 15.2 | kernel-rt +3 | 5.3.18-lp152.3.8.1 | openSUSE-SU-2021:0758-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.225-168.357 | 1.0-0.amzn2 | ALAS2-2021-1616 |
| Amazon Linux 2 | perf +8 | 4.14.225-168.357.amzn2 | ALAS2-2021-1616 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.10.78.1-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-240.22.1.el8_3 | ELSA-2021-1093 |
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.48.6.el7uek | ELSA-2021-9172, ELSA-2021-9164, ELSA-2021-9140 |
| Oracle Linux 7 | kernel-uek-container | 4.14.35-2047.501.2.el7 | ELSA-2021-9175, ELSA-2021-9141, ELSA-2021-9116 |
| Oracle Linux 7 | kernel-uek-container-debug | 5.4.17-2036.104.5.el8 | ELSA-2021-9141, ELSA-2021-9115 |
| Oracle Linux 7 | kernel-uek-tools +3 | 4.14.35-2047.501.2.el7uek | ELSA-2021-9172, ELSA-2021-9140, ELSA-2021-9114 |
| Oracle Linux 7 | perf +12 | 3.10.0-1160.24.1.el7 | ELSA-2021-9172, ELSA-2021-9140, ELSA-2021-9114 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
WhatsWrongAndWhy/CVE-2021-27365 ★ 0 · Jul 21, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 50
- ALSA-2021:1093 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2021:1531 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:1379 Red Hat Security Advisory: kernel-alt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:1295 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:1279 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:1272 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:1093 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:1081 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:1532 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1377 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1376 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1373 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1288 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1289 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1267 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1173 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1171 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1071 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1070 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:1069 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- USN-4883-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4887-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.3, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe, linux-hwe-5.4, linux-hwe-5.8, linux-kvm, linux-oem-5.10, linux-oem-5.6, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4, linux-raspi2-5.3 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4889-1 linux, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DLA-2610-1 linux-4.19 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2586-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2021:1623-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1238-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1075-1 Security update for the Linux Kernel (Live Patch 37 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1573-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1211-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:14724-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1210-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1975-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1625-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1596-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1177-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1617-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1175-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0758-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1624-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0532-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1977-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1176-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1074-1 Security update for the Linux Kernel (Live Patch 38 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2577-1 Security update for the Linux Kernel (Live Patch 15 for SLE 15 SP2) SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2021:1046-1 Security update for the Linux Kernel (Live Patch 16 for SLE 12 SP5) SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2021:1975-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2021:1977-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2021-9175 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 13, 2021
- ELSA-2021-9172 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 12, 2021
References
- [debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update mailing-list
- [debian-lts-announce] 20210330 [SECURITY] [DLA 2610-1] linux-4.19 security update mailing-list
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.openwall.com/lists/oss-security/2021/03/06/1
- https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html
- http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
- https://security.netapp.com/advisory/ntap-20210409-0001/
- https://bugzilla.suse.com/show_bug.cgi?id=1182715
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7ee
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5