Description
In the Linux kernel, the following vulnerability has been resolved:
pipe: wakeup wr_wait after setting max_usage
Commit c73be61cede5 ("pipe: Add general notification queue support") a
regression was introduced that would lock up resized pipes under certain
conditions. See the reproducer in [1].
The commit resizing the pipe ring size was moved to a different
function, doing that moved the wakeup for pipe->wr_wait before actually
raising pipe->max_usage. If a pipe was full before the resize occured it
would result in the wakeup never actually triggering pipe_write.
Set @max_usage and @nr_accounted before waking writers if this isn't a
watch queue.
[Christian Brauner <brauner@kernel.org>: rewrite to account for watch queues]
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.8 | 5.10.210 |
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 | 6.6.15-1 | — |
| Debian 13 | linux | 6.6.15-1 | — |
| Debian 12 | linux | 6.1.76-1 | — |
| Debian 10 | linux-5.10 | 5.10.216-1~deb10u1 | DLA-3842-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1043.45 | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-106.116 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1061.67 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1063.72 | — |
| Ubuntu 22.04 LTS | linux-azure-6.5 | 6.5.0-1022.23~22.04.1 | USN-6819-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1063.72.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1059.67 | — |
| Ubuntu 22.04 LTS | linux-gcp-6.5 | 6.5.0-1022.24~22.04.1 | USN-6818-1 |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1058.63 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1044.51 | — |
| Ubuntu 22.04 LTS | linux-hwe-6.5 | 6.5.0-41.41~22.04.2 | USN-6818-4 |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1054.57 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1057.63 | — |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.5 | 6.5.0-41.41.1~22.04.1 | USN-6818-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1054.55 | — |
| Ubuntu 22.04 LTS | linux-nvidia-6.5 | 6.5.0-1021.22 | USN-6818-3 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1026.26 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1015.15 | — |
| Ubuntu 22.04 LTS | linux-oem-6.5 | 6.5.0-1024.25 | USN-6819-3 |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1059.65 | — |
| Ubuntu 22.04 LTS | linux-oracle-6.5 | 6.5.0-1024.24~22.04.1 | USN-6819-4 |
| Ubuntu 22.04 LTS | linux-riscv +22 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.5 | 6.5.0-40.40.1~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-starfive-6.5 | 6.5.0-1015.16~22.04.1 | USN-6819-1 |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1030.34 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1061.67~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1063.72~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1059.67~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1044.51~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-106.116~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1054.57~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1058.64~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1027.27~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1059.65~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1057.61~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2001.1 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1054.56 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1062.70 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1061.67+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1063.72+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-106.116+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1059.67+fips1 | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | rv +77 | 5.14.0-570.12.1.el9_6 | RHSA-2025:6966 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | kernel-64kb | 6.4.0-150600.23.14.1 | SUSE-SU-2024:2571-1 |
| SLES 15 SP6 | kernel-azure +1 | 6.4.0-150600.8.8.2 | SUSE-SU-2024:2896-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.14.2.150600.12.4.3 | SUSE-SU-2024:2571-1 |
| SLES 15 SP6 | kernel-docs +5 | 6.4.0-150600.23.14.2 | SUSE-SU-2024:2571-1 |
| SLES 15 SP6 | kernel-syms-azure | 6.4.0-150600.8.8.1 | SUSE-SU-2024:2896-1 |
| SLES 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.60.1 | SUSE-SU-2024:2372-1 |
| 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 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.0 | kernel-default-base | 6.4.0-17.1.1.51 | SUSE-SU-2025:20008-1 |
| SLE Micro 6.0 | kernel-rt +1 | 6.4.0-9.1 | SUSE-SU-2025:20028-1 |
| SLE Micro 6.0 | kernel-source +2 | 6.4.0-18.1 | SUSE-SU-2025:20008-1 |
| 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 | 5.14.21-150500.13.61.1 | SUSE-SU-2024:2394-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.14.2 | SUSE-SU-2024:2571-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_1 | 1-150600.1.5.1 | SUSE-SU-2024:2973-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_2 | 1-150600.13.3.2 | SUSE-SU-2024:2571-1 |
| 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-2024:2394-1 |
| SUSE Real Time Module 15 SP6 | kernel-rt +3 | 6.4.0-150600.10.5.1 | SUSE-SU-2024:2973-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.61.1 | SUSE-SU-2024:2394-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | dtb-aarch64 +1 | 6.4.0-150600.23.14.1 | SUSE-SU-2024:2571-1 |
| openSUSE Leap 15.6 | kernel-azure +1 | 6.4.0-150600.8.8.2 | SUSE-SU-2024:2896-1 |
| openSUSE Leap 15.6 | kernel-default-base | 6.4.0-150600.23.14.2.150600.12.4.3 | SUSE-SU-2024:2571-1 |
| openSUSE Leap 15.6 | kernel-docs +8 | 6.4.0-150600.23.14.2 | SUSE-SU-2024:2571-1 |
| openSUSE Leap 15.6 | kernel-rt +3 | 6.4.0-150600.10.5.1 | SUSE-SU-2024:2973-1 |
| openSUSE Leap 15.6 | kernel-syms-azure | 6.4.0-150600.8.8.1 | SUSE-SU-2024:2896-1 |
| 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 | 5.14.21-150500.33.60.1 | SUSE-SU-2024:2372-1 |
| 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 | 5.14.21-150500.13.61.1 | SUSE-SU-2024:2394-1 |
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 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.77-99.164 | 1.0-0.amzn2023 | ALAS2023-2024-517 |
| Amazon Linux 2023 | perf +14 | 6.1.77-99.164.amzn2023 | ALAS2023-2024-517 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | bpftool | 7.5.0-802.el9_6 | ELSA-2025-6966 |
| Oracle Linux 9 | rv +28 | 5.14.0-570.12.1.0.1.el9_6 | ELSA-2025-6966 |
Advisories 19
- WID-SEC-2024-1188 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 9, 2026
- USN-6819-4 linux-oracle-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-6818-3 linux-nvidia-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-6818-1 linux, linux-gcp, linux-gcp-6.5, linux-lowlatency, linux-lowlatency-hwe-6.5, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-6819-3 linux-oem-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-6818-4 linux-hwe-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-6819-1 linux-azure, linux-azure-6.5, linux-starfive, linux-starfive-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- RHSA-2025:6966 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- SUSE-SU-2025:20008-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20028-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-3842-1 linux-5.10 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2024:2973-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2394-1 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-2024:2896-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2372-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2024-517 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 18, 2025
- ELSA-2025-6966 Moderate: kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 16, 2025
- SUSE-SU-2024:2571-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
References
- https://git.kernel.org/stable/c/162ae0e78bdabf84ef10c1293c4ed7865cb7d3c8
- https://git.kernel.org/stable/c/3efbd114b91525bb095b8ae046382197d92126b9
- https://git.kernel.org/stable/c/b87a1229d8668fbc78ebd9ca0fc797a76001c60f
- https://git.kernel.org/stable/c/68e51bdb1194f11d3452525b99c98aff6f837b24
- https://git.kernel.org/stable/c/6fb70694f8d1ac34e45246b0ac988f025e1e5b55
- https://git.kernel.org/stable/c/e95aada4cb93d42e25c30a0ef9eb2923d9711d4a