Description
In the Linux kernel, the following vulnerability has been resolved:
io_uring: fix incorrect io_kiocb reference in io_link_skb
In io_link_skb function, there is a bug where prev_notif is incorrectly
assigned using 'nd' instead of 'prev_nd'. This causes the context
validation check to compare the current notification with itself instead
of comparing it with the previous notification.
Fix by using the correct prev_nd parameter when obtaining prev_notif.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 6.10 | 6.12.49 |
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 | 6.16.9-1 | — |
| Debian 13 | linux | 6.12.57-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | linux-azure-fde | No fix yet | — |
| Ubuntu 24.04 LTS | linux-intel +19 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 2 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-realtime-6.14 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | kernel-64kb +7 | 6.12.0-160000.7.1 | SUSE-SU-2025:21147-1 |
| SLES for SAP 16.0 | kernel-default-base | 6.12.0-160000.6.1.160000.2.4 | SUSE-SU-2025:21147-1 |
| SLES for SAP 16.0 | kernel-livepatch-SLE16_Update_0 | 5-160000.4.3 | SUSE-SU-2026:20149-1 |
| SLES for SAP 16.0 | kernel-livepatch-SLE16_Update_1 | 3-160000.1.1 | SUSE-SU-2026:20202-1 |
| SLES 16.0 | kernel-64kb +7 | 6.12.0-160000.7.1 | SUSE-SU-2025:21180-1, SUSE-SU-2025:21147-1 |
| SLES 16.0 | kernel-default-base | 6.12.0-160000.6.1.160000.2.4 | SUSE-SU-2025:21147-1 |
| SLES 16.0 | kernel-livepatch-SLE16_Update_0 | 5-160000.4.3 | SUSE-SU-2026:20149-1 |
| SLES 16.0 | kernel-livepatch-SLE16_Update_1 | 3-160000.1.1 | SUSE-SU-2026:20202-1 |
| SLE Micro 6.2 | kernel-default-base | 6.12.0-160000.6.1.160000.2.4 | SUSE-SU-2025:21080-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16-RT_Update_0 | 4-160000.3.4 | SUSE-SU-2026:20164-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16_Update_0 | 5-160000.4.3 | SUSE-SU-2026:20169-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16_Update_1 +1 | 3-160000.1.1 | SUSE-SU-2026:20171-1, SUSE-SU-2026:20168-1 |
| SLE Micro 6.2 | kernel-rt +5 | 6.12.0-160000.7.1 | SUSE-SU-2026:20561-1, SUSE-SU-2025:21080-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | kernel-default-base | 6.12.0-160000.6.1.160000.2.4 | openSUSE-SU-2025:20091-1 |
| openSUSE Leap 16.0 | kernel-rt +10 | 6.12.0-160000.7.1 | openSUSE-SU-2025:20091-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.12.53-69.119 | 1:1.0-0.amzn2023 | ALAS2023-2025-1254 |
| Amazon Linux 2023 | perf6.12 +14 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | kernel-uek +34 | 6.12.0-104.43.4.3.el10uek | ELSA-2025-20719 |
Advisories 14
- SUSE-SU-2026:20561-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jul 9, 2026
- WID-SEC-2025-2249 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Apr 9, 2026
- openSUSE-SU-2025:20091-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20202-1 Security update for the Linux Kernel (Live Patch 1 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20169-1 Security update for the Linux Kernel (Live Patch 0 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20171-1 Security update for the Linux Kernel (Live Patch 1 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20149-1 Security update for the Linux Kernel (Live Patch 0 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20164-1 Security update for the Linux Kernel RT (Live Patch 0 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20168-1 Security update for the Linux Kernel RT (Live Patch 1 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21147-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21080-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21180-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- ALAS2023-2025-1254 Important: kernel6.12 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 27, 2025
- ELSA-2025-20719 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 24, 2025