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OpenAdvisories

Description

A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service.

Affected products

VendorProductAffectedFixed
Red Hat Kernel all kernel versions before 5.7 —

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.

ReleasePackageFixed inAdvisory
Debian 14 linux 5.6.14-1 —
Debian 13 linux 5.6.14-1 —
Debian 12 linux 5.6.14-1 —
Debian 10 linux 4.19.118-2+deb10u1 DSA-4699-1
Debian 9 linux 4.9.210-1+deb9u1 DSA-4698-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Debian 8 linux-4.9 4.9.210-1+deb9u1~deb8u1 DLA-2242-1
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-riscv +2 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-40.44 USN-4411-1
Ubuntu 20.04 LTS linux-aws +1 5.4.0-1018.18 USN-4411-1
Ubuntu 20.04 LTS linux-azure 5.4.0-1020.20 USN-4411-1
Ubuntu 20.04 LTS linux-gcp +1 5.4.0-1019.19 USN-4411-1
Ubuntu 20.04 LTS linux-gke +2 No fix yet —
Ubuntu 20.04 LTS linux-oem-5.6 5.6.0-1011.11 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1013.13 USN-4411-1
Ubuntu 20.04 LTS linux-riscv 5.4.0-28.32 USN-4411-1
Ubuntu 18.04 LTS linux 4.15.0-109.110 USN-4414-1
Ubuntu 18.04 LTS linux-aws 4.15.0-1077.81 USN-4414-1
Ubuntu 18.04 LTS linux-aws-5.3 +2 5.3.0-1030.32~18.04.1 USN-4412-1
Ubuntu 18.04 LTS linux-azure-5.3 5.3.0-1032.33~18.04.1 USN-4412-1
Ubuntu 18.04 LTS linux-gcp +6 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1078.88 USN-4414-1
Ubuntu 18.04 LTS linux-gke-4.15 4.15.0-1064.67 USN-4414-1
Ubuntu 18.04 LTS linux-gke-5.0 5.0.0-1043.44 USN-4413-1
Ubuntu 18.04 LTS linux-hwe 5.3.0-62.56~18.04.1 USN-4412-1
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-40.44~18.04.1 —
Ubuntu 18.04 LTS linux-kvm 4.15.0-1069.70 USN-4414-1
Ubuntu 18.04 LTS linux-oem +1 4.15.0-1091.101 USN-4414-1
Ubuntu 18.04 LTS linux-oem-osp1 5.0.0-1063.68 USN-4413-1
Ubuntu 18.04 LTS linux-oracle 4.15.0-1048.52 USN-4414-1
Ubuntu 18.04 LTS linux-oracle-5.3 5.3.0-1028.30~18.04.1 USN-4412-1
Ubuntu 18.04 LTS linux-raspi2 4.15.0-1065.69 USN-4414-1
Ubuntu 18.04 LTS linux-raspi2-5.3 5.3.0-1028.30~18.04.2 USN-4412-1
Ubuntu 18.04 LTS linux-snapdragon 4.15.0-1081.88 USN-4414-1
Ubuntu 16.04 LTS linux 4.4.0-185.215 USN-4419-1
Ubuntu 16.04 LTS linux-aws 4.4.0-1110.121 USN-4419-1
Ubuntu 16.04 LTS linux-aws-hwe 4.15.0-1074.78~16.04.1 USN-4414-1
Ubuntu 16.04 LTS linux-azure 4.15.0-1091.101~16.04.1 USN-4414-1
Ubuntu 16.04 LTS linux-gcp 4.15.0-1078.88~16.04.1 USN-4414-1
Ubuntu 16.04 LTS linux-hwe 4.15.0-107.108~16.04.1 USN-4414-1
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu 16.04 LTS linux-kvm 4.4.0-1076.83 USN-4419-1
Ubuntu 16.04 LTS linux-oracle 4.15.0-1046.50~16.04.1 USN-4414-1
Ubuntu 16.04 LTS linux-raspi2 4.4.0-1135.144 USN-4419-1
Ubuntu 16.04 LTS linux-snapdragon 4.4.0-1139.147 USN-4419-1
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro FIPS 18.04 LTS linux-aws-fips +2 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2022.22 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2006.7 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1035.40 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1042.47 —
Ubuntu Pro 14.04 LTS linux No fix yet —
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1074.78 USN-4419-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1091.101~14.04.1 USN-4414-1
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-185.215~14.04.1 USN-4419-1
ReleasePackageFixed inAdvisory
RHEL 8 kernel-rt +12 4.18.0-193.1.2.rt13.53.el8_2 RHSA-2020:2171
RHEL 8 kpatch-patch-4_18_0-193 1-2.el8 RHSA-2020:2125
RHEL 8 perf +26 4.18.0-193.1.2.el8_2 RHSA-2020:2102
RHEL 7 kernel +15 3.10.0-1127.8.2.el7 RHSA-2020:2104, RHSA-2020:2082
RHEL 7 kernel-alt 4.14.0-115.21.2.el7a RHSA-2020:2104
RHEL 7 kernel-rt +10 3.10.0-1127.8.2.rt56.1103.el7 RHSA-2020:2085
RHEL 7 perf +2 3.10.0-957.54.1.el7 RHSA-2020:2289, RHSA-2020:2104, RHSA-2020:2082
RHEL 6 perf +15 2.6.32-754.29.2.el6 RHSA-2020:2103
Show 12 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 8.1 EUS kpatch-patch-4_18_0-147 1-13.el8 RHSA-2020:2203
RHEL 8.1 EUS kpatch-patch-4_18_0-147_0_2 +1 1-9.el8 RHSA-2020:2203
RHEL 8.1 EUS kpatch-patch-4_18_0-147_3_1 1-9.el8_1 RHSA-2020:2203
RHEL 8.1 EUS kpatch-patch-4_18_0-147_5_1 1-4.el8_1 RHSA-2020:2203
RHEL 8.1 EUS kpatch-patch-4_18_0-147_8_1 1-2.el8_1 RHSA-2020:2203
RHEL 8.1 EUS perf +26 4.18.0-147.13.2.el8_1 RHSA-2020:2199
RHEL 8.0 E4S perf +18 4.18.0-80.23.2.el8_0 RHSA-2020:2429
RHEL 7.7 EUS kpatch-patch-3_10_0-1062 1-18.el7 RHSA-2020:2519
RHEL 7.7 EUS kpatch-patch-3_10_0-1062_12_1 +2 1-2.el7 RHSA-2020:2519
RHEL 7.7 EUS kpatch-patch-3_10_0-1062_1_1 1-17.el7 RHSA-2020:2519
RHEL 7.7 EUS kpatch-patch-3_10_0-1062_1_2 1-16.el7 RHSA-2020:2519
RHEL 7.7 EUS kpatch-patch-3_10_0-1062_4_1 1-13.el7 RHSA-2020:2519
RHEL 7.7 EUS kpatch-patch-3_10_0-1062_4_2 +1 1-10.el7 RHSA-2020:2519
RHEL 7.7 EUS kpatch-patch-3_10_0-1062_7_1 +1 1-7.el7 RHSA-2020:2519
RHEL 7.7 EUS perf +18 3.10.0-1062.26.1.el7 RHSA-2020:2522
RHEL 7.6 EUS kpatch-patch-3_10_0-957_35_1 1-9.el7 RHSA-2020:2291
RHEL 7.6 EUS kpatch-patch-3_10_0-957_35_2 1-8.el7 RHSA-2020:2291
RHEL 7.6 EUS kpatch-patch-3_10_0-957_38_1 1-7.el7 RHSA-2020:2291
RHEL 7.6 EUS kpatch-patch-3_10_0-957_38_2 +1 1-6.el7 RHSA-2020:2291
RHEL 7.6 EUS kpatch-patch-3_10_0-957_41_1 +1 1-4.el7 RHSA-2020:2291
RHEL 7.6 EUS kpatch-patch-3_10_0-957_46_1 +1 1-3.el7 RHSA-2020:2291
RHEL 7.6 EUS perf +18 3.10.0-957.54.1.el7 RHSA-2020:2289
RHEL 7.4 TUS perf +11 3.10.0-693.67.1.el7 RHSA-2020:2214
RHEL 7.4 E4S perf +13 3.10.0-693.67.1.el7 RHSA-2020:2214
RHEL 7.4 AUS perf +11 3.10.0-693.67.1.el7 RHSA-2020:2214
RHEL 7.3 TUS perf +11 3.10.0-514.76.1.el7 RHSA-2020:2277
RHEL 7.3 E4S perf +13 3.10.0-514.76.1.el7 RHSA-2020:2277
RHEL 7.3 AUS perf +11 3.10.0-514.76.1.el7 RHSA-2020:2277
RHEL 7.2 AUS perf +11 3.10.0-327.88.1.el7 RHSA-2020:2285
Red Hat MRG 2 kernel-rt +10 1:3.10.0-693.67.1.rt56.665.el6rt RHSA-2020:2242
ReleasePackageFixed inAdvisory
SLES 15 SP2 kernel-azure +2 5.3.18-18.5.1 SUSE-SU-2020:2027-1
SLES 15 SP2 kernel-default-base 5.3.18-24.9.1.9.2.6 SUSE-SU-2020:2105-1
SLES 15 SP2 kernel-docs 5.3.18-24.9.2 SUSE-SU-2020:2105-1
SLES 15 SP2 kernel-syms +4 5.3.18-24.9.1 SUSE-SU-2020:2105-1
SLES 15 SP1 kernel-azure +2 4.12.14-8.33.1 SUSE-SU-2020:1604-1
SLES 15 SP1 kernel-docs +5 4.12.14-197.45.1 SUSE-SU-2020:1599-1
SLES 15 kernel-docs +6 4.12.14-150.52.1 SUSE-SU-2020:1663-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.16.1 SUSE-SU-2020:1587-1
SLES 12 SP5 kernel-docs +4 4.12.14-122.23.1 SUSE-SU-2020:1602-1
SLES 12 SP4 kernel-azure +2 4.12.14-6.43.1 SUSE-SU-2020:1603-1
SLES 12 SP4 kernel-docs +4 4.12.14-95.54.1 SUSE-SU-2020:1605-1
Show 21 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 12 SP3 kernel-syms +2 4.4.180-94.127.1 SUSE-SU-2020:2152-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_34 1-4.3.1 SUSE-SU-2020:2152-1
SLES 12 SP2 kernel-syms +2 4.4.121-92.138.1 SUSE-SU-2020:2134-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_36 1-3.3.1 SUSE-SU-2020:2134-1
SLES for SAP 15 kernel-docs +5 4.12.14-150.52.1 SUSE-SU-2020:1663-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.16.1 SUSE-SU-2020:1587-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.23.1 SUSE-SU-2020:1602-1
SLES for SAP 12 SP4 kernel-azure +2 4.12.14-6.43.1 SUSE-SU-2020:1603-1
SLES for SAP 12 SP4 kernel-syms +2 4.12.14-95.54.1 SUSE-SU-2020:1605-1
SLES for SAP 12 SP3 kernel-syms +2 4.4.180-94.127.1 SUSE-SU-2020:2152-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_34 1-4.3.1 SUSE-SU-2020:2152-1
SLES for SAP 12 SP2 kernel-syms +2 4.4.121-92.138.1 SUSE-SU-2020:2134-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_36 1-3.3.1 SUSE-SU-2020:2134-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.13.1 SUSE-SU-2020:2478-1
SLE Real Time 12 SP4 kernel-rt +3 4.12.14-8.23.1 SUSE-SU-2020:2156-1
SLE Live Patching 15 SP2 kernel-default 5.3.18-24.9.1 SUSE-SU-2020:2105-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_1 1-5.3.6 SUSE-SU-2020:2105-1
SLE Live Patching 15 SP1 kernel-default 4.12.14-197.45.1 SUSE-SU-2020:1599-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_12 1-3.5.1 SUSE-SU-2020:1599-1
SLE Live Patching 15 kernel-default 4.12.14-150.52.1 SUSE-SU-2020:1663-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_18 1-1.5.1 SUSE-SU-2020:1663-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.23.1 SUSE-SU-2020:1602-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_5 1-8.3.1 SUSE-SU-2020:1602-1
SLE Live Patching 12 SP4 kernel-default 4.12.14-95.54.1 SUSE-SU-2020:1605-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_14 1-6.3.1 SUSE-SU-2020:1605-1
SLE HPC 15 kernel-docs +5 4.12.14-150.52.1 SUSE-SU-2020:1663-1
SUSE Real Time Module 15 SP1 kernel-rt +3 4.12.14-14.28.1 SUSE-SU-2020:2487-1
SUSE OpenStack Cloud Crowbar 8 kernel-syms +2 4.4.180-94.127.1 SUSE-SU-2020:2152-1
SUSE OpenStack Cloud Crowbar 8 kgraft-patch-SLE12-SP3_Update_34 1-4.3.1 SUSE-SU-2020:2152-1
SUSE OpenStack Cloud 8 kernel-syms +2 4.4.180-94.127.1 SUSE-SU-2020:2152-1
SUSE OpenStack Cloud 8 kgraft-patch-SLE12-SP3_Update_34 1-4.3.1 SUSE-SU-2020:2152-1
SUSE OpenStack Cloud 7 kernel-syms +2 4.4.121-92.138.1 SUSE-SU-2020:2134-1
SUSE OpenStack Cloud 7 kgraft-patch-SLE12-SP2_Update_36 1-3.3.1 SUSE-SU-2020:2134-1
SUSE HPE Helion OpenStack 8 kernel-syms +2 4.4.180-94.127.1 SUSE-SU-2020:2152-1
SUSE HPE Helion OpenStack 8 kgraft-patch-SLE12-SP3_Update_34 1-4.3.1 SUSE-SU-2020:2152-1
SUSE Enterprise Storage 5 kernel-syms +2 4.4.180-94.127.1 SUSE-SU-2020:2152-1
SUSE Enterprise Storage 5 kgraft-patch-SLE12-SP3_Update_34 1-4.3.1 SUSE-SU-2020:2152-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.2 kernel-default-base 5.3.18-lp152.26.2.lp152.8.2.2 openSUSE-SU-2020:0935-1
openSUSE Leap 15.2 kernel-docs +8 5.3.18-lp152.26.2 openSUSE-SU-2020:0935-1
openSUSE Leap 15.2 kernel-rt +3 5.3.18-lp152.3.5.1 openSUSE-SU-2021:0242-1
openSUSE Leap 15.1 kernel-docs 4.12.14-lp151.28.52.2 openSUSE-SU-2020:0801-1
openSUSE Leap 15.1 kernel-obs-qa +1 4.12.14-lp151.28.52.3 openSUSE-SU-2020:0801-1
openSUSE Leap 15.1 kernel-syms +5 4.12.14-lp151.28.52.1 openSUSE-SU-2020:0801-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2 kernel-livepatch-4.14.177-139.254 1.0-0.amzn2 ALAS2-2020-1425
Amazon Linux 2 perf +8 4.14.177-139.254.amzn2 ALAS2-2020-1425

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 8 perf +19 4.18.0-193.1.2.el8_2 ELSA-2020-2102
Oracle Linux 7 kernel-uek +5 4.1.12-124.46.3.el7uek ELSA-2021-9002, ELSA-2020-5756, ELSA-2020-5755
Oracle Linux 7 kernel-uek-tools +3 4.14.35-1902.304.6.el7uek ELSA-2020-5756, ELSA-2020-5755
Oracle Linux 7 perf +12 3.10.0-1127.8.2.el7 ELSA-2020-5756, ELSA-2020-5755, ELSA-2020-2082

Advisories 50

References