Description
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix slab-use-after-free in gfs2_qd_dealloc
In gfs2_put_super(), whether withdrawn or not, the quota should
be cleaned up by gfs2_quota_cleanup().
Otherwise, struct gfs2_sbd will be freed before gfs2_qd_dealloc (rcu
callback) has run for all gfs2_quota_data objects, resulting in
use-after-free.
Also, gfs2_destroy_threads() and gfs2_quota_cleanup() is already called
by gfs2_make_fs_ro(), so in gfs2_put_super(), after calling
gfs2_make_fs_ro(), there is no need to call them again.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 6.6 | 6.6.3 |
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 | 6.6.8-1 | — |
| Debian 13 | linux | 6.6.8-1 | — |
| Debian 11 | linux-6.1 | 6.1.119-1~deb11u1 | DLA-4008-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1051.53 | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-119.129 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1068.74 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1071.80 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1071.80.1 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1067.75 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1065.71 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1051.58 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1061.64 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1063.69 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1065.70 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1063.64 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1028.28 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1016.16 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1066.72 | USN-6974-1 |
| Ubuntu 22.04 LTS | linux-riscv +31 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1035.39 | USN-7019-1 |
| Ubuntu 20.04 LTS | linux | 5.4.0-193.213 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1131.141 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1068.74~20.04.1 | USN-6974-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1136.143 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1071.80~20.04.1 | USN-6974-1 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1071.80~20.04.1.1 | USN-6974-1 |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1091.98 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1135.144 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1067.75~20.04.1 | USN-6974-1 |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1098.102 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1051.58~20.04.1 | USN-6974-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-119.129~20.04.1 | USN-6974-1 |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1078.83 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1061.64~20.04.1 | USN-6974-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1063.69~20.04.1 | USN-6974-1 |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1043.44 | USN-7006-1 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1119.127 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1030.30~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1130.139 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1066.72~20.04.1 | USN-6974-2 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1115.127 | USN-6973-1 |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1064.68~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1050.54 | USN-6973-1 |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1061.63 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1069.77 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | 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 22.04 LTS | linux-aws-fips | 5.15.0-1068.74+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1071.80+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-119.129+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1067.75+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1131.141+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1136.143+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1105.115 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1135.144+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2110.116 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2089.95 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1126.137 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2073.78 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1104.111 | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux | 4.15.0-228.240 | USN-6972-1 |
| Ubuntu Pro 18.04 LTS | linux-aws | 4.15.0-1172.185 | USN-6972-2 |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 | 5.4.0-1131.141~18.04.1 | USN-6973-3 |
| Ubuntu Pro 18.04 LTS | linux-azure-4.15 | 4.15.0-1180.195 | USN-6972-3 |
| Ubuntu Pro 18.04 LTS | linux-azure-5.4 | 5.4.0-1136.143~18.04.1 | USN-6973-2 |
| Ubuntu Pro 18.04 LTS | linux-gcp-4.15 | 4.15.0-1165.182 | USN-6972-1 |
| Ubuntu Pro 18.04 LTS | linux-gcp-5.4 | 5.4.0-1135.144~18.04.1 | USN-6973-1 |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-193.213~18.04.1 | USN-6973-1 |
| Ubuntu Pro 18.04 LTS | linux-ibm-5.4 | 5.4.0-1078.83~18.04.1 | USN-6973-1 |
| Ubuntu Pro 18.04 LTS | linux-kvm | 4.15.0-1155.160 | USN-6972-1 |
| Ubuntu Pro 18.04 LTS | linux-oracle | 4.15.0-1134.145 | USN-6972-4 |
| Ubuntu Pro 18.04 LTS | linux-oracle-5.4 | 5.4.0-1130.139~18.04.1 | USN-6973-1 |
| Ubuntu Pro 18.04 LTS | linux-raspi-5.4 | 5.4.0-1115.127~18.04.1 | USN-6973-4 |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-258.292 | USN-6976-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1173.188 | USN-6976-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1172.185~16.04.1 | USN-6972-2 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1180.195~16.04.1 | USN-6972-3 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1165.182~16.04.1 | USN-6972-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-228.240~16.04.1 | USN-6972-1 |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1136.146 | USN-6976-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1134.145~16.04.1 | USN-6972-4 |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1135.141 | USN-6976-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1180.195~14.04.1 | USN-6972-3 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-258.292~14.04.2 | USN-6976-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.167.1-2 | — |
Advisories 15
- WID-SEC-2024-1197 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service und unspezifische Angriffe BSI CERT-Bund (WID) · Nov 9, 2026
- USN-7006-1 linux-iot vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7019-1 linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6972-1 linux, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6974-2 linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6976-1 linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6973-1 linux, linux-aws, linux-azure, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6973-2 linux-azure-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6974-1 linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6972-2 linux-aws, linux-aws-hwe vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6972-3 linux-azure, linux-azure-4.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6973-4 linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6972-4 linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6973-3 linux-aws-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- DLA-4008-1 linux-6.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026