Description
In the Linux kernel, the following vulnerability has been resolved:
pinmux: Use sequential access to access desc->pinmux data
When two client of the same gpio call pinctrl_select_state() for the
same functionality, we are seeing NULL pointer issue while accessing
desc->mux_owner.
Let's say two processes A, B executing in pin_request() for the same pin
and process A updates the desc->mux_usecount but not yet updated the
desc->mux_owner while process B see the desc->mux_usecount which got
updated by A path and further executes strcmp and while accessing
desc->mux_owner it crashes with NULL pointer.
Serialize the access to mux related setting with a mutex lock.
cpu0 (process A) cpu1(process B)
pinctrl_select_state() { pinctrl_select_state() {
pin_request() { pin_request() {
...
....
} else {
desc->mux_usecount++;
desc->mux_usecount && strcmp(desc->mux_owner, owner)) {
if (desc->mux_usecount > 1)
return 0;
desc->mux_owner = owner;
} }
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 3.10 | 6.1.191 |
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 | 6.12.5-1 | — |
| Debian 13 | linux | 6.12.5-1 | — |
| Debian 12 | linux | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | No fix yet | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-58.60 | USN-7449-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1027.29 | USN-7449-1 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1027.32 | USN-7449-1 |
| Ubuntu 24.04 LTS | linux-azure-6.11 | 6.11.0-1012.12~24.04.1 | — |
| Ubuntu 24.04 LTS | linux-azure-nvidia | 6.8.0-1014.15 | USN-7468-1 |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1028.30 | USN-7450-1 |
| Ubuntu 24.04 LTS | linux-gcp-6.11 | 6.11.0-1011.11~24.04.1 | — |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1023.27 | USN-7450-1 |
| Ubuntu 24.04 LTS | linux-gkeop | 6.8.0-1010.12 | USN-7450-1 |
| Ubuntu 24.04 LTS | linux-hwe-6.11 | 6.11.0-21.21~24.04.1 | USN-7379-1 |
| Ubuntu 24.04 LTS | linux-ibm | 6.8.0-1024.24 | USN-7449-1 |
| Ubuntu 24.04 LTS | linux-lowlatency-hwe-6.11 | 6.11.0-1011.12~24.04.1 | USN-7381-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1026.29 | USN-7449-1 |
| Ubuntu 24.04 LTS | linux-nvidia-6.11 | 6.11.0-1007.7 | — |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1026.29.1 | USN-7449-1 |
| Ubuntu 24.04 LTS | linux-nvidia-tegra | 6.8.0-1008.8 | — |
| Ubuntu 24.04 LTS | linux-oem-6.11 | 6.11.0-1017.17 | USN-7382-1 |
| Ubuntu 24.04 LTS | linux-oem-6.8 | 6.8.0-1026.26 | USN-7449-1 |
| Ubuntu 24.04 LTS | linux-oracle | 6.8.0-1024.25 | USN-7449-1 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1028.32 | USN-7524-1 |
| Ubuntu 24.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 24.04 LTS | linux-riscv +1 | 6.8.0-58.60.1 | USN-7449-1 |
| Ubuntu 24.04 LTS | linux-xilinx | 6.8.0-1017.18 | — |
| Ubuntu 22.04 LTS | linux +49 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1027.29~22.04.1 | USN-7451-1 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1027.32~22.04.1 | USN-7449-1 |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | 6.8.0-1028.30~22.04.1 | USN-7452-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | 6.8.0-58.60~22.04.1 | USN-7449-2 |
| Ubuntu 22.04 LTS | linux-ibm-6.8 | 6.8.0-1024.24~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1026.29~22.04.1 | USN-7449-1 |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1024.25~22.04.1 | USN-7449-1 |
| Ubuntu 22.04 LTS | linux-riscv-6.8 +1 | 6.8.0-58.60.1~22.04.1 | USN-7449-1 |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| 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 | 6.8.0-2023.24 | USN-7523-1 |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1020.21 | USN-7453-1 |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | 6.8.1-1020.21~22.04.1 | — |
| 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-fips +3 | No fix yet | — |
| 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 +21 | 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 | — |
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 | 6.4.0-150600.23.38.1 | SUSE-SU-2025:0499-1 |
| SLES 15 SP6 | kernel-azure +2 | 6.4.0-150600.8.26.1 | SUSE-SU-2025:0428-1 |
| SLES 15 SP6 | kernel-coco +3 | 6.4.0-15061.12.coco15sp6.1 | SUSE-SU-2025:0289-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.38.1.150600.12.16.2 | SUSE-SU-2025:0499-1 |
| SLES 12 SP5 | kernel-syms +2 | 4.12.14-122.244.1 | SUSE-SU-2025:0236-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.1 | kernel-default-base | 6.4.0-24.1.21.4 | SUSE-SU-2025:20248-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0-RT_Update_5 | 1-1.1 | SUSE-SU-2025:20249-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_5 | 1-1.2 | SUSE-SU-2025:20248-1 |
| SLE Micro 6.1 | kernel-rt +4 | 6.4.0-25.1 | SUSE-SU-2025:20249-1, SUSE-SU-2025:20248-1 |
| SLE Micro 6.0 | kernel-default-base | 6.4.0-24.1.21.4 | SUSE-SU-2025:20165-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0-RT_Update_5 | 1-1.1 | SUSE-SU-2025:20166-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_5 | 1-1.2 | SUSE-SU-2025:20165-1 |
| SLE Micro 6.0 | kernel-rt +4 | 6.4.0-25.1 | SUSE-SU-2025:20166-1, SUSE-SU-2025:20165-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.38.1 | SUSE-SU-2025:0499-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_8 | 1-150600.1.3.1 | SUSE-SU-2025:0557-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_8 | 1-150600.13.3.2 | SUSE-SU-2025:0499-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.244.1 | SUSE-SU-2025:0236-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_64 | 1-8.5.1 | SUSE-SU-2025:0236-1 |
| SUSE Real Time Module 15 SP6 | kernel-rt +3 | 6.4.0-150600.10.26.1 | SUSE-SU-2025:0557-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | dtb-aarch64 +10 | 6.4.0-150600.23.38.1 | SUSE-SU-2025:0499-1 |
| openSUSE Leap 15.6 | kernel-azure +2 | 6.4.0-150600.8.26.1 | SUSE-SU-2025:0428-1 |
| openSUSE Leap 15.6 | kernel-default-base | 6.4.0-150600.23.38.1.150600.12.16.2 | SUSE-SU-2025:0499-1 |
| openSUSE Leap 15.6 | kernel-rt +3 | 6.4.0-150600.10.26.1 | SUSE-SU-2025:0557-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kernel | 6.6.76.1-1 | — |
| Azure Linux 2 (CBL-Mariner) | kernel | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | bpftool | 7.5.0-802.el9_6 | ELSA-2025-6966 |
| Oracle Linux 9 | kernel-uek +34 | 6.12.0-101.33.4.3.el10uek | ELSA-2025-20530, ELSA-2025-20480 |
| Oracle Linux 9 | rv +28 | 5.14.0-570.12.1.0.1.el9_6 | ELSA-2025-6966 |
Advisories 26
- WID-SEC-2025-0047 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 11, 2026
- USN-7449-1 linux, linux-aws, linux-azure, linux-azure-6.8, linux-ibm, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oem-6.8, linux-oracle, linux-oracle-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7450-1 linux-gcp, linux-gke, linux-gkeop vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7468-1 linux-azure-nvidia vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7453-1 linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7451-1 linux-aws-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7524-1 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7523-1 linux-raspi-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7452-1 linux-gcp-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7449-2 linux-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7379-1 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-6.11, linux-oracle, linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7382-1 linux-oem-6.11 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- RHSA-2025:6966 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- USN-7381-1 linux-lowlatency-hwe-6.11 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- SUSE-SU-2025:20165-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20166-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20248-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20249-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:0557-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0499-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0236-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0428-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0289-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2025-20530 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 18, 2025
- ELSA-2025-20480 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 17, 2025
- ELSA-2025-6966 Moderate: kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 16, 2025