Description
In the Linux kernel, the following vulnerability has been resolved:
btrfs: qgroup: fix quota root leak after quota disable failure
If during the quota disable we fail when cleaning the quota tree or when
deleting the root from the root tree, we jump to the 'out' label without
ever dropping the reference on the quota root, resulting in a leak of the
root since fs_info->quota_root is no longer pointing to the root (we have
set it to NULL just before those steps).
Fix this by always doing a btrfs_put_root() call under the 'out' label.
This is a problem that exists since qgroups were first added in 2012 by
commit bed92eae26cc ("Btrfs: qgroup implementation and prototypes"), but
back then we missed a kfree on the quota root and free_extent_buffer()
calls on its root and commit root nodes, since back then roots were not
yet reference counted.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 3.6 | 5.10.223 |
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 | 6.9.11-1 | — |
| Debian 13 | linux | 6.9.11-1 | — |
| Debian 12 | linux | 6.1.106-1 | — |
| Debian 11 | linux | 5.10.223-1 | DSA-5747-1 |
| 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 | 5.15.0-1056.58 | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-48.48 | USN-7089-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1018.20 | USN-7089-3 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1017.20 | USN-7089-2 |
| Ubuntu 24.04 LTS | linux-gcp +1 | 6.8.0-1017.19 | USN-7095-1, USN-7089-2 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1013.17 | USN-7089-6 |
| Ubuntu 24.04 LTS | linux-gkeop | 6.8.0-1002.4 | USN-7156-1 |
| Ubuntu 24.04 LTS | linux-ibm | 6.8.0-1015.15 | USN-7089-2 |
| Ubuntu 24.04 LTS | linux-lowlatency | 6.8.0-48.48.3 | USN-7089-7 |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1017.19.1 | USN-7095-1 |
| Ubuntu 24.04 LTS | linux-oem-6.8 | 6.8.0-1016.16 | USN-7089-4 |
| Ubuntu 24.04 LTS | linux-oracle | 6.8.0-1015.16 | USN-7089-3 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1014.16 | USN-7089-5 |
| Ubuntu 24.04 LTS | linux-riscv | 6.8.0-48.48.1 | — |
| Ubuntu 24.04 LTS | linux-xilinx | 6.8.0-1009.10 | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-125.135 | USN-7100-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1072.78 | USN-7100-2 |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1018.19~22.04.1 | USN-7089-3 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1075.84 | USN-7123-1 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1017.20~22.04.1 | USN-7090-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1076.85.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1071.79 | USN-7100-1 |
| Ubuntu 22.04 LTS | linux-gcp-6.8 +1 | 6.8.0-1017.19~22.04.1 | USN-7095-1, USN-7089-1 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1069.75 | USN-7100-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1055.62 | USN-7100-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | 6.8.0-48.48~22.04.1 | USN-7089-1 |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1065.68 | USN-7100-1 |
| Ubuntu 22.04 LTS | linux-ibm-6.8 +1 | 6.8.0-1015.15~22.04.1 | USN-7089-3 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1067.73 | USN-7144-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1069.74 | USN-7100-1 |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.8 | 6.8.0-48.48.3~22.04.1 | USN-7089-7 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1067.68 | USN-7100-1 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1032.32 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1020.20 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1070.76 | USN-7100-1 |
| Ubuntu 22.04 LTS | linux-riscv +31 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.8 | 6.8.0-48.48.1~22.04.2 | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1038.42 | USN-7100-1 |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1072.78~20.04.1 | USN-7100-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1078.87~20.04.1 | USN-7194-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1071.79~20.04.1 | USN-7100-1 |
| Ubuntu 20.04 LTS | linux-gke +27 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1055.62~20.04.1 | USN-7100-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-125.135~20.04.1 | USN-7100-1 |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1065.68~20.04.1 | USN-7100-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1067.73~20.04.1 | USN-7144-1 |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1032.32~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1070.76~20.04.1 | USN-7100-1 |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1068.72~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 16 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 24.04 LTS | linux-raspi-realtime | 6.8.0-2013.14 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1011.11 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1066.68 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1073.81 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | 6.8.1-1011.11~22.04.1 | — |
| 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 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips | 6.8.0-78.78+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1072.78+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1075.84+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-125.135+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1071.79+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux +10 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux +12 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux +7 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux +3 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | kernel-64kb +6 | 6.4.0-150600.23.22.1 | SUSE-SU-2024:3383-1 |
| SLES 15 SP6 | kernel-azure +2 | 6.4.0-150600.8.11.1 | SUSE-SU-2024:3194-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.22.1.150600.12.8.3 | SUSE-SU-2024:3383-1 |
| SLES 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.63.1 | SUSE-SU-2024:2947-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| SLES 15 SP5 | kernel-docs | 5.14.21-150500.55.73.2 | SUSE-SU-2024:2939-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.194.1 | SUSE-SU-2024:2901-1 |
| SLES 12 SP5 | kernel-docs | 4.12.14-122.225.2 | SUSE-SU-2024:2940-1 |
| SLES 12 SP5 | kernel-syms +3 | 4.12.14-122.225.1 | SUSE-SU-2024:2940-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.194.1 | SUSE-SU-2024:2901-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.225.1 | SUSE-SU-2024:2940-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.197.1 | SUSE-SU-2024:2892-1 |
| SLE Micro 6.0 | kernel-default-base | 6.4.0-17.1.1.51 | SUSE-SU-2025:20044-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_2 +1 | 1-1.1 | SUSE-SU-2025:20047-1, SUSE-SU-2025:20044-1 |
| SLE Micro 6.0 | kernel-rt +1 | 6.4.0-10.1 | SUSE-SU-2025:20047-1 |
| SLE Micro 6.0 | kernel-source +2 | 6.4.0-19.1 | SUSE-SU-2025:20044-1 |
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.22.1 | SUSE-SU-2024:3383-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_2 | 1-150600.1.3.2 | SUSE-SU-2024:3195-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_4 | 1-150600.13.3.3 | SUSE-SU-2024:3383-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_17 +1 | 1-150500.11.3.1 | SUSE-SU-2024:2939-1, SUSE-SU-2024:2894-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.225.1 | SUSE-SU-2024:2940-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_59 | 1-8.3.1 | SUSE-SU-2024:2940-1 |
| SUSE Real Time Module 15 SP6 | kernel-rt +2 | 6.4.0-150600.10.8.3 | SUSE-SU-2024:3195-1 |
| SUSE Real Time Module 15 SP6 | kernel-syms-rt | 6.4.0-150600.10.8.1 | SUSE-SU-2024:3195-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | dtb-aarch64 +10 | 6.4.0-150600.23.22.1 | SUSE-SU-2024:3383-1 |
| openSUSE Leap 15.6 | kernel-azure +2 | 6.4.0-150600.8.11.1 | SUSE-SU-2024:3194-1 |
| openSUSE Leap 15.6 | kernel-default-base | 6.4.0-150600.23.22.1.150600.12.8.3 | SUSE-SU-2024:3383-1 |
| openSUSE Leap 15.6 | kernel-rt +2 | 6.4.0-150600.10.8.3 | SUSE-SU-2024:3195-1 |
| openSUSE Leap 15.6 | kernel-syms-rt | 6.4.0-150600.10.8.1 | SUSE-SU-2024:3195-1 |
| openSUSE Leap 15.5 | dtb-aarch64 +9 | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.63.1 | SUSE-SU-2024:2947-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| openSUSE Leap 15.5 | kernel-docs | 5.14.21-150500.55.73.2 | SUSE-SU-2024:2939-1 |
| openSUSE Leap 15.5 | kernel-rt +3 | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.5 | kernel-default | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| openSUSE Leap Micro 5.5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| openSUSE Leap Micro 5.5 | kernel-rt | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.102-108.177 | 1.0-0.amzn2023 | ALAS2023-2024-679 |
| Amazon Linux 2023 | perf +14 | 6.1.102-108.177.amzn2023 | ALAS2023-2024-679 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | bpftool +13 | 5.15.0-302.167.6.el9uek | ELSA-2024-12815 |
Advisories 33
- WID-SEC-2024-1722 Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Nov 9, 2026
- USN-7100-1 linux, linux-aws-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-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-raspi, linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7144-1 linux-intel-iotg, linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7194-1 linux-azure-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7156-1 linux-gkeop vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7100-2 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7123-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7095-1 linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7090-1 linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7089-6 linux-gke vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7089-3 linux-aws, linux-aws-6.8, linux-oracle, linux-oracle-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7089-7 linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7089-2 linux-azure, linux-gcp, linux-ibm vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7089-1 linux, linux-gcp-6.8, linux-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7089-5 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7089-4 linux-oem-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- SUSE-SU-2025:20047-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20044-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4008-1 linux-6.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5747-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- ICSA-25-226-07 Siemens Third-Party Components in SINEC OS CISA ICS & IT advisories · Feb 25, 2026
- SSA-355557 SSA-355557: Multiple Vulnerabilities in Third-Party Components in SINEC OS before V3.2 Siemens ProductCERT · Feb 24, 2026
- SUSE-SU-2024:2892-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2940-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2947-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2939-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2901-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3195-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3383-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3194-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2024-679 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 18, 2025
- SUSE-SU-2024:2894-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2024-12815 Important: Unbreakable Enterprise kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 11, 2024
References
- https://git.kernel.org/stable/c/94818bdb00ef34a996a06aa63d11f591074cb757
- https://git.kernel.org/stable/c/8a69529f22590b67bb018de9acbcf94abc8603cf
- https://git.kernel.org/stable/c/5ef3961682e5310f2221bae99bcf9f5d0f4b0d51
- https://git.kernel.org/stable/c/f88aeff5a173e8ba3133314eb4b964236ef3589d
- https://git.kernel.org/stable/c/7dd6a5b96157a21245566b21fd58276a214357ff
- https://git.kernel.org/stable/c/a7e4c6a3031c74078dba7fa36239d0f4fe476c53