CVE-2026-53163
locking/rtmutex: Skip remove_waiter() when waiter is not enqueued
CVE-2026-53163 is fixed in 73 products on 1 platform, first by DEBIAN-CVE-2026-53163, released June 28, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0012
2nd percentile
locking/rtmutex: Skip remove_waiter() when waiter is not enqueued (bsc#1269306).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool · ol 8 | 0:5.15.0-323.211.3.3.el9uek | bpftool 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| bpftool · ol 9 | 0:5.15.0-323.211.3.3.el9uek | bpftool 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| bpftool6.12 · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| bpftool6.12-debuginfo · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| bpftool6.18 · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| dtb-aarch64 · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-64kb · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-64kb · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-64kb · sles 16.0 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel-azure · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-azure · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-azure · sles 16.0 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel-default · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-default · sles 15.6 | 6.4.0-150600.23.135.1 | SUSE-SU-2026:4369-1 | Oct 2, 2026 |
| kernel-default · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-default · sles 16.0 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel-default-base · opensuse-leap 16.0 | 6.12.0-160000.38.1.160000.2.22 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-default-base · sles 15.6 | 6.4.0-150600.23.135.1.150600.12.62.4 | SUSE-SU-2026:4369-1 | Oct 2, 2026 |
| kernel-default-base · sles 15.7 | 6.4.0-150700.53.81.1.150700.17.45.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-default-base · sles 16.0 | 6.12.0-160000.38.1.160000.2.23 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel-docs · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-docs · sles 15.6 | 6.4.0-150600.23.135.1 | SUSE-SU-2026:4369-1 | Oct 2, 2026 |
| kernel-docs · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-docs · sles 16.0 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel-kvmsmall · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-kvmsmall · sles 16.0 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel-livepatch-6.12.94-123.180 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel-livepatch-6.18.36-69.134 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel-livepatch-SLE15-SP6_Update_31 · sles 15.6 | 1-150600.13.3.4 | SUSE-SU-2026:4369-1 | Oct 2, 2026 |
| kernel-livepatch-SLE15-SP7-RT_Update_20 · sles 15.7 | 1-150700.1.3.1 | SUSE-SU-2026:4120-1 | Sep 10, 2026 |
| kernel-livepatch-SLE15-SP7_Update_21 · sles 15.7 | 1-150700.15.3.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-obs-build · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-obs-build · sles 15.6 | 6.4.0-150600.23.135.1 | SUSE-SU-2026:4369-1 | Oct 2, 2026 |
| kernel-obs-build · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-obs-qa · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-obs-qa · sles 16.0 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel-rt · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-source · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-source · sles 15.6 | 6.4.0-150600.23.135.1 | SUSE-SU-2026:4369-1 | Oct 2, 2026 |
| kernel-source · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-source · sles 16.0 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel-syms · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-syms · sles 15.6 | 6.4.0-150600.23.135.1 | SUSE-SU-2026:4369-1 | Oct 2, 2026 |
| kernel-syms · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-syms · sles 16.0 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel-uek · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-container · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-container 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-container · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-container 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-container-debug · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-container-debug 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-container-debug · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-container-debug 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-core · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-core 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-core · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-core 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug-core · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug-core 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug-core · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug-core 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug-devel · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug-devel 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug-devel · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug-devel 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug-modules · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug-modules 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug-modules · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug-modules 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug-modules-extra · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug-modules-extra 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-debug-modules-extra · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-debug-modules-extra 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-devel · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-devel 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-devel · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-devel 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-doc · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-doc 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-doc · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-doc 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-modules · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-modules 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-modules · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-modules 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-modules-extra · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-modules-extra 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek-modules-extra · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek-modules-extra 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k-core · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k-core 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k-core · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k-core 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k-devel · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k-devel 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k-devel · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k-devel 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k-modules · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k-modules 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k-modules · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k-modules 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k-modules-extra · ol 8 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k-modules-extra 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-uek64k-modules-extra · ol 9 | 0:5.15.0-323.211.3.3.el9uek | kernel-uek64k-modules-extra 0:5.15.0-323.211.3.3.el9uek | Aug 11, 2026 |
| kernel-zfcpdump · opensuse-leap 16.0 | 6.12.0-160000.38.1 | OPENSUSE-SU-2026:21910-1 | Sep 22, 2026 |
| kernel-zfcpdump · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-zfcpdump · sles 16.0 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 | Sep 22, 2026 |
| kernel6.12 · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-debuginfo · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-debuginfo-common-aarch64 · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-debuginfo-common-x86_64 · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-devel · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-headers · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-modules-extra · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-modules-extra-common · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-tools · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-tools-debuginfo · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.12-tools-devel · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| linux · Debian 12.15 (bookworm) | 6.1.177-1 | DEBIAN-CVE-2026-53163 | Jun 28, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.95-1 | DEBIAN-CVE-2026-53163 | Jun 28, 2026 |
| linux · Debian 14 | 7.0.13-1 | DEBIAN-CVE-2026-53163 | Jun 28, 2026 |
| microvm-kernel6.18 · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| perf6.12 · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| perf6.12-debuginfo · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| python3-perf6.12 · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| python3-perf6.12-debuginfo · amzn 2023 | 1:6.12.94-123.180.amzn2023 | ALAS2023-2026-1987 | Jul 20, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.36-69.134.amzn2023 | ALAS2023-2026-1925 | Jul 6, 2026 |
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