Description
In the Linux kernel, the following vulnerability has been resolved:
net: 9p: fix refcount leak in p9_read_work() error handling
p9_req_put need to be called when m->rreq->rc.sdata is NULL to avoid
temporary refcount leak.
[Dominique: commit wording adjustments, p9_req_put argument fixes for rebase]
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.19.57 – < 4.20, 4.20 | 4.20 |
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 | 5.19.6-1 | — |
| Debian 13 | linux | 5.19.6-1 | — |
| Debian 12 | linux | 5.19.6-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-53.59 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1023.27 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1023.29 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1024.30.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1022.29 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1020.25 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1008.12 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1018.21 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1018.23 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1021.26 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1015.15 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1022.28 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1018.20 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 +1 | 5.15.0-1023.27~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1023.29~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1022.29~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-53.59~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1018.23~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1022.28~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1025.28 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux +10 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 +6 | No fix yet | — |
Advisories 1
- WID-SEC-2025-1350 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 12, 2026
References
- https://git.kernel.org/stable/c/9bc63a124cc20a69a126e45e3d593d5807bb5258
- https://git.kernel.org/stable/c/8324649b0035cbb30ebc3ca901540cb392e89041
- https://git.kernel.org/stable/c/622f2a467bdfbce73fd43ea74b5f0fd2caaa8c5d
- https://git.kernel.org/stable/c/34b9a188557c1d5a50e07cf228d054101aee0af3
- https://git.kernel.org/stable/c/4ac7573e1f9333073fa8d303acc941c9b7ab7f61