Description
An issue was discovered in the Linux kernel through 6.5.9. During a race with SQ thread exit, an io_uring/fdinfo.c io_uring_show_fdinfo NULL pointer dereference can occur.
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 | 6.5.10-1 | — |
| Debian 13 | linux | 6.5.10-1 | — |
| Debian 12 | linux | 6.1.64-1 | — |
| Debian 11 | linux | 5.10.205-2 | DSA-5594-1 |
| Debian 10 | linux-5.10 | 5.10.205-2~deb10u1 | DLA-3711-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1037.39 | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-100.110 | USN-6686-2, USN-6686-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1056.61 | USN-6705-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1058.66 | USN-6686-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1058.66.1 | USN-6686-1 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1053.61 | USN-6686-1 |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1052.57 | USN-6686-4, USN-6686-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1038.44 | USN-6686-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.5 | 6.5.0-17.17~22.04.1 | USN-6624-1 |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1048.51 | USN-6686-2, USN-6686-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1050.56 | USN-6686-5 |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.5 | 6.5.0-17.17.1.1.1~22.04.1 | USN-6624-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1046.46 | USN-6686-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.5 | 6.5.0-1014.14 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1025.25 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1012.12 | — |
| Ubuntu 22.04 LTS | linux-oem-6.1 | 6.1.0-1027.27 | USN-6533-1 |
| Ubuntu 22.04 LTS | linux-oem-6.5 | 6.5.0-1014.15 | USN-6624-1 |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1053.59 | USN-6686-3 |
| Ubuntu 22.04 LTS | linux-riscv +24 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1030.34 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1056.61~20.04.1 | USN-6705-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1058.66~20.04.2 | USN-6686-1 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1058.66~20.04.2.1 | USN-6686-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1053.61~20.04.1 | USN-6686-1 |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1038.44~20.04.1 | USN-6686-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-100.110~20.04.1 | USN-6686-1 |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1048.51~20.04.1 | USN-6686-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1050.56~20.04.1 | USN-6686-5 |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1025.25~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1053.59~20.04.1 | USN-6686-3 |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1051.55~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
Show 4 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 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1048.50 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1056.63 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1056.61+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-100.110+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1055.63+fips2 | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.3.0-427.13.1.el9_4 | RHSA-2024:2394 |
| RHEL 9 | rv +64 | 5.14.0-427.13.1.el9_4 | RHSA-2024:2394 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | bpftool | 7.3.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux 9 | rv +60 | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.39.1 | SUSE-SU-2023:4730-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.26.1 | SUSE-SU-2023:4734-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.39.1.150500.6.17.1 | SUSE-SU-2023:4730-1 |
| SLES 15 SP4 | kernel-64kb +4 | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| SLES 15 SP4 | kernel-azure +2 | 5.14.21-150400.14.75.1 | SUSE-SU-2023:4782-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| SLES 15 SP4 | kernel-docs +1 | 5.14.21-150400.24.100.1 | SUSE-SU-2023:4810-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.39.1 | SUSE-SU-2023:4730-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.39.1.150500.6.17.1 | SUSE-SU-2023:4730-1 |
| SLE Micro 5.5 | kernel-rt | 5.14.21-150500.13.27.2 | SUSE-SU-2023:4732-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| SLE Micro 5.4 | kernel-rt | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| SLE Micro 5.3 | kernel-rt | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.39.1 | SUSE-SU-2023:4730-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_8 | 1-150500.11.3.2 | SUSE-SU-2023:4732-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_8 | 1-150500.11.3.1 | SUSE-SU-2023:4730-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4-RT_Update_16 | 1-150400.1.3.1 | SUSE-SU-2023:4731-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_21 | 1-150400.9.3.2 | SUSE-SU-2023:4810-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +2 | 5.14.21-150500.13.27.2 | SUSE-SU-2023:4732-1 |
| SUSE Real Time Module 15 SP5 | kernel-syms-rt | 5.14.21-150500.13.27.1 | SUSE-SU-2023:4732-1 |
| SUSE Real Time Module 15 SP4 | kernel-rt +3 | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | dtb-aarch64 +10 | 5.14.21-150500.55.39.1 | SUSE-SU-2023:4730-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.26.1 | SUSE-SU-2023:4734-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.39.1.150500.6.17.1 | SUSE-SU-2023:4730-1 |
| openSUSE Leap 15.5 | kernel-rt +2 | 5.14.21-150500.13.27.2 | SUSE-SU-2023:4732-1 |
| openSUSE Leap 15.5 | kernel-syms-rt | 5.14.21-150500.13.27.1 | SUSE-SU-2023:4732-1 |
| openSUSE Leap 15.4 | dtb-aarch64 +3 | 5.14.21-150400.24.100.1 | SUSE-SU-2023:4810-1 |
| openSUSE Leap 15.4 | kernel-64kb +6 | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap 15.4 | kernel-azure +2 | 5.14.21-150400.14.75.1 | SUSE-SU-2023:4782-1 |
| openSUSE Leap 15.4 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap 15.4 | kernel-rt +3 | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap Micro 5.4 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap Micro 5.4 | kernel-rt | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
| openSUSE Leap Micro 5.3 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap Micro 5.3 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap Micro 5.3 | kernel-rt | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.61-85.141 | 1.0-0.amzn2023 | ALAS2023-2023-430 |
| Amazon Linux 2023 | perf +13 | 6.1.61-85.141.amzn2023 | ALAS2023-2023-430 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.143.1-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | bpftool | 7.3.0-427.13.1.el9_4 | ELSA-2024-2394 |
| Oracle Linux 9 | rv +27 | 5.14.0-427.13.1.el9_4 | ELSA-2024-2394 |
Advisories 24
- ALSA-2024:2394 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- USN-6624-1 linux, linux-aws, linux-gcp, linux-hwe-6.5, linux-laptop, linux-lowlatency, linux-lowlatency-hwe-6.5, linux-oem-6.5, linux-oracle, linux-raspi, linux-starfive vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6686-1 linux, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-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-lowlatency-hwe-5.15, linux-nvidia vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6705-1 linux-aws, linux-aws-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6686-3 linux-oracle, linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6686-2 linux-lowlatency, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6686-4 linux-kvm vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6686-5 linux-intel-iotg, linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6533-1 linux-oem-6.1 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- RHSA-2024:2394 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2024-1226 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- DSA-5594-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3711-1 linux-5.10 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- ALAS2023-2023-430 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 8, 2026
- SUSE-SU-2023:4734-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4810-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4732-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4782-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- WID-SEC-2023-2770 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · May 13, 2025
- SUSE-SU-2023:4730-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2023:4731-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2024-2394 Important: kernel security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 2, 2024