Description
In the Linux kernel, the following vulnerability has been resolved:
apparmor: fix race on rawdata dereference
There is a race condition that leads to a use-after-free situation:
because the rawdata inodes are not refcounted, an attacker can start
open()ing one of the rawdata files, and at the same time remove the
last reference to this rawdata (by removing the corresponding profile,
for example), which frees its struct aa_loaddata; as a result, when
seq_rawdata_open() is reached, i_private is a dangling pointer and
freed memory is accessed.
The rawdata inodes weren't refcounted to avoid a circular refcount and
were supposed to be held by the profile rawdata reference. However
during profile removal there is a window where the vfs and profile
destruction race, resulting in the use after free.
Fix this by moving to a double refcount scheme. Where the profile
refcount on rawdata is used to break the circular dependency. Allowing
for freeing of the rawdata once all inode references to the rawdata
are put.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.13 | 5.10.253 |
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 | 6.19.6-2 | — |
| Debian 13 | linux | 6.12.74-2 | — |
| Debian 12 | linux | 6.1.164-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 24.04 LTS | linux-bluefield | 6.8.0-1017.21 | — |
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1087.89 | — |
| Ubuntu 25.10 | linux | 6.17.0-19.19 | — |
| Ubuntu 25.10 | linux-aws +2 | 6.17.0-1009.9 | — |
| Ubuntu 25.10 | linux-azure +1 | 6.17.0-1010.10 | — |
| Ubuntu 25.10 | linux-azure-fde | No fix yet | — |
| Ubuntu 25.10 | linux-realtime | 6.17.0-1008.9 | — |
| Ubuntu 25.10 | linux-riscv | 6.17.0-19.19.1 | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-106.106 | — |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1050.53 | — |
| Ubuntu 24.04 LTS | linux-aws-6.17 | 6.17.0-1009.9~24.04.2 | — |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1051.57 | — |
| Ubuntu 24.04 LTS | linux-azure-6.17 | 6.17.0-1010.10~24.04.1 | — |
| Ubuntu 24.04 LTS | linux-azure-fde | 6.8.0-1058.65 | — |
| Ubuntu 24.04 LTS | linux-azure-nvidia | 6.8.0-1039.42 | — |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1052.55 | — |
| Ubuntu 24.04 LTS | linux-gcp-6.17 | 6.17.0-1009.9~24.04.3 | — |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1048.53 | — |
| Ubuntu 24.04 LTS | linux-gkeop | 6.8.0-1035.38 | — |
| Ubuntu 24.04 LTS | linux-hwe-6.17 | 6.17.0-19.19~24.04.2 | — |
| Ubuntu 24.04 LTS | linux-ibm | 6.8.0-1049.49 | — |
| Ubuntu 24.04 LTS | linux-lowlatency | 6.8.0-106.106.1 | — |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1049.52 | — |
| Ubuntu 24.04 LTS | linux-nvidia-6.17 | 6.17.0-1014.14 | — |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1049.52.1 | — |
| Ubuntu 24.04 LTS | linux-nvidia-tegra | 6.8.0-1020.20 | — |
| Ubuntu 24.04 LTS | linux-oem-6.17 | 6.17.0-1017.17 | USN-8152-1 |
| Ubuntu 24.04 LTS | linux-oracle | 6.8.0-1047.48 | — |
| Ubuntu 24.04 LTS | linux-oracle-6.17 | 6.17.0-1009.9~24.04.1 | — |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1050.54 | — |
| Ubuntu 24.04 LTS | linux-riscv +18 | No fix yet | — |
| Ubuntu 24.04 LTS | linux-riscv-6.17 | 6.17.0-19.19.1~24.04.1 | — |
| Ubuntu 24.04 LTS | linux-xilinx | 6.8.0-1028.29 | USN-8261-1 |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-173.183 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1103.110 | — |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1050.53~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1109.118 | USN-8163-2 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1051.57~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1109.118.1 | — |
| Ubuntu 22.04 LTS | linux-azure-fde-6.8 | 6.8.0-1058.65~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1103.112 | — |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | 6.8.0-1052.55~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1099.105 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1086.94 | — |
| Ubuntu 22.04 LTS | linux-hwe-6.8 +1 | 6.8.0-106.106~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1097.100 | — |
| Ubuntu 22.04 LTS | linux-ibm-6.8 | 6.8.0-1049.49~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1098.104 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1095.100 | — |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.8 | 6.8.0-106.106.1~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1098.99 | — |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1049.52~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1055.55 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1044.44 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1100.106 | — |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1047.48~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1067.71 | — |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2040.41 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1045.46 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.14 | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.17 | 6.17.0-1008.9~24.04.1 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1096.98 | USN-8164-1 |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1102.111 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | 6.8.1-1045.46~22.04.1 | — |
| 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-updates 24.04 LTS | linux-aws-fips | 6.8.0-1050.53+fips1 | — |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-azure-fips | 6.8.0-1052.58+fips1 | USN-8165-1 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips | 6.8.0-106.106+fips1 | — |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-gcp-fips | 6.8.0-1052.55+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1103.110+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1109.118+fips1 | USN-8163-1 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-173.183+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1103.112+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1156.166+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1160.166+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1130.140 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1159.168+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2129.135 | USN-8266-1 |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2109.115 | USN-8267-1 |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1146.158 | USN-8266-1 |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2092.98 | USN-8266-1 |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux | 5.4.0-227.247 | — |
| Ubuntu Pro 20.04 LTS | linux-aws | 5.4.0-1156.166 | — |
| Ubuntu Pro 20.04 LTS | linux-aws-5.15 | 5.15.0-1103.110~20.04.1 | — |
| Ubuntu Pro 20.04 LTS | linux-azure | 5.4.0-1160.166 | — |
| Ubuntu Pro 20.04 LTS | linux-azure-5.15 | 5.15.0-1110.119~20.04.1 | USN-8243-1 |
| Ubuntu Pro 20.04 LTS | linux-bluefield | 5.4.0-1116.123 | USN-8224-1 |
| Ubuntu Pro 20.04 LTS | linux-gcp | 5.4.0-1159.168 | — |
| Ubuntu Pro 20.04 LTS | linux-gcp-5.15 | 5.15.0-1103.112~20.04.1 | — |
| Ubuntu Pro 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-173.183~20.04.1 | — |
| Ubuntu Pro 20.04 LTS | linux-ibm | 5.4.0-1102.107 | — |
| Ubuntu Pro 20.04 LTS | linux-ibm-5.15 | 5.15.0-1097.100~20.04.1 | — |
| Ubuntu Pro 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1098.104~20.04.1 | — |
| Ubuntu Pro 20.04 LTS | linux-iot | 5.4.0-1060.63 | — |
| Ubuntu Pro 20.04 LTS | linux-kvm | 5.4.0-1143.152 | — |
| Ubuntu Pro 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1055.55~20.04.1 | — |
| Ubuntu Pro 20.04 LTS | linux-oracle | 5.4.0-1154.164 | — |
| Ubuntu Pro 20.04 LTS | linux-oracle-5.15 | 5.15.0-1100.106~20.04.1 | — |
| Ubuntu Pro 20.04 LTS | linux-raspi | 5.4.0-1139.152 | USN-8098-10 |
| Ubuntu Pro 20.04 LTS | linux-riscv-5.15 | 5.15.0-1098.102~20.04.1 | — |
| Ubuntu Pro 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1074.78 | — |
| Ubuntu Pro 18.04 LTS | linux | 4.15.0-249.261 | USN-8266-1 |
| Ubuntu Pro 18.04 LTS | linux-aws | 4.15.0-1191.204 | USN-8266-1 |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 | 5.4.0-1156.166~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-azure-4.15 | 4.15.0-1200.215 | USN-8266-1 |
| Ubuntu Pro 18.04 LTS | linux-azure-5.4 | 5.4.0-1161.167~18.04.1 | USN-8201-1 |
| Ubuntu Pro 18.04 LTS | linux-gcp-4.15 | 4.15.0-1184.201 | USN-8266-1 |
| Ubuntu Pro 18.04 LTS | linux-gcp-5.4 | 5.4.0-1159.168~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-227.247~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-ibm-5.4 | 5.4.0-1102.107~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-kvm | 4.15.0-1173.178 | USN-8266-1 |
| Ubuntu Pro 18.04 LTS | linux-oracle | 4.15.0-1153.164 | USN-8266-1 |
| Ubuntu Pro 18.04 LTS | linux-oracle-5.4 | 5.4.0-1154.164~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-raspi-5.4 | 5.4.0-1139.152~18.04.1 | USN-8098-10 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1191.204~16.04.1 | USN-8266-1 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1200.215~16.04.1 | USN-8267-1 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1184.201~16.04.1 | USN-8266-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-249.261~16.04.1 | USN-8266-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1153.164~16.04.1 | USN-8267-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1200.215~14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | kernel-64kb +7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 |
| SLES 15 SP7 | kernel-default-base | 6.4.0-150700.53.55.1.150700.17.33.1 | SUSE-SU-2026:2238-1 |
| SLES 15 SP6 | kernel-64kb +6 | 6.4.0-150600.23.112.1 | SUSE-SU-2026:2195-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.112.1.150600.12.52.1 | SUSE-SU-2026:2195-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | kernel-default-base | 6.4.0-150600.23.112.1.150600.12.52.1 | SUSE-SU-2026:2195-1 |
| SLES for SAP 15 SP6 | kernel-docs +4 | 6.4.0-150600.23.112.1 | SUSE-SU-2026:2195-1 |
| SLE Micro 6.2 | kernel-syms +1 | 6.12.0-160000.33.1 | SUSE-SU-2026:21834-1 |
| SLE Live Patching 15 SP7 | kernel-default | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_15 | 1-150700.15.3.1 | SUSE-SU-2026:2238-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.112.1 | SUSE-SU-2026:2195-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_26 | 1-150600.13.3.1 | SUSE-SU-2026:2195-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kernel | 6.6.130.1-1 | — |
Advisories 16
- USN-8243-1 linux-azure-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8266-1 linux, linux-aws, linux-aws-fips, linux-aws-hwe, linux-azure-4.15, linux-fips, linux-gcp, linux-gcp-4.15, linux-gcp-fips, linux-hwe, linux-kvm, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8267-1 linux-azure, linux-azure-fips, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8224-1 linux-bluefield vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8201-1 linux-azure-5.4 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8152-1 linux-oem-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8163-1 linux-azure-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8164-1 linux-intel-iot-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8165-1 linux-azure-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8163-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8098-10 linux-raspi, linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- WID-SEC-2026-0950 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 4, 2026
- USN-8261-1 linux-xilinx vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- SUSE-SU-2026:21834-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jul 9, 2026
- SUSE-SU-2026:2238-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jul 1, 2026
- SUSE-SU-2026:2195-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jul 1, 2026
References
- https://git.kernel.org/stable/c/3b8e77c7abab40e6de9ad9de730d77984a498840
- https://git.kernel.org/stable/c/d9d8560b9b7932f8cffc4c068c14289220900f79
- https://git.kernel.org/stable/c/6b6ba87579c7e7c669e0bec91823e7fb693bc5df
- https://git.kernel.org/stable/c/6ef1f2926c41ab96952d9696d55a052f1b3a9418
- https://git.kernel.org/stable/c/f9761add6d100962a23996cb68f3d6abdd4d1815
- https://git.kernel.org/stable/c/af782cc8871e3683ddd5a3cd2f7df526599863a9
- https://git.kernel.org/stable/c/763e838adc3c7ec5a7df2990ce84cad951e42721
- https://git.kernel.org/stable/c/a0b7091c4de45a7325c8780e6934a894f92ac86b