Unrated severityNVD Advisory· Published Sep 4, 2024· Updated Jan 5, 2026
ALSA: line6: Fix racy access to midibuf
CVE-2024-44954
Description
In the Linux kernel, the following vulnerability has been resolved:
ALSA: line6: Fix racy access to midibuf
There can be concurrent accesses to line6 midibuf from both the URB completion callback and the rawmidi API access. This could be a cause of KMSAN warning triggered by syzkaller below (so put as reported-by here).
This patch protects the midibuf call of the former code path with a spinlock for avoiding the possible races.
Affected products
112- osv-coords111 versionspkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%20Micro%205.5pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%20Micro%205.5pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%20Micro%205.5pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.6pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP5pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-coco_debug&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-livepatch-MICRO-6-0-RT_Update_3&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-livepatch-MICRO-6-0_Update_3&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-livepatch-SLE15-SP5-RT_Update_21&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-livepatch-SLE15-SP5_Update_20&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-livepatch-SLE15-SP6-RT_Update_4&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-livepatch-SLE15-SP6_Update_5&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP5pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP5pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP5pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-source-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP5pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP5pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-syms-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP5pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_61&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 6.4.0-150600.23.25.1+ 110 more
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.33.69.1
- (no CPE)range: < 6.4.0-150600.8.14.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 6.4.0-150600.23.25.1.150600.12.10.2
- (no CPE)range: < 5.14.21-150500.55.83.1.150500.6.37.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.2
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 6.4.0-150600.23.25.2
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 6.4.0-150600.10.14.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 6.4.0-150600.10.14.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 5.14.21-150500.33.69.1
- (no CPE)range: < 6.4.0-150600.8.14.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 6.4.0-150600.10.14.1
- (no CPE)range: < 5.14.21-150500.33.69.1
- (no CPE)range: < 6.4.0-150600.8.14.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 6.4.0-150600.10.14.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.33.69.1
- (no CPE)range: < 6.4.0-150600.8.14.1
- (no CPE)range: < 4.12.14-16.200.1
- (no CPE)range: < 4.12.14-16.200.1
- (no CPE)range: < 6.4.0-15061.6.coco15sp6.1
- (no CPE)range: < 6.4.0-15061.6.coco15sp6.1
- (no CPE)range: < 5.14.21-150500.55.83.1.150500.6.37.1
- (no CPE)range: < 5.14.21-150500.55.83.1.150500.6.37.1
- (no CPE)range: < 6.4.0-150600.23.25.1.150600.12.10.2
- (no CPE)range: < 6.4.0-17.1.1.51
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 6.4.0-20.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.2
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 6.4.0-20.1
- (no CPE)range: < 1-1.2
- (no CPE)range: < 1-1.2
- (no CPE)range: < 1-150500.11.3.1
- (no CPE)range: < 1-150500.11.3.1
- (no CPE)range: < 1-150600.1.3.1
- (no CPE)range: < 1-150600.13.3.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.2
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 4.12.14-10.203.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 6.4.0-150600.10.14.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 4.12.14-10.203.1
- (no CPE)range: < 6.4.0-11.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 6.4.0-150600.10.14.1
- (no CPE)range: < 5.14.21-150500.33.69.1
- (no CPE)range: < 6.4.0-150600.8.14.1
- (no CPE)range: < 4.12.14-16.200.1
- (no CPE)range: < 4.12.14-16.200.1
- (no CPE)range: < 6.4.0-15061.6.coco15sp6.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 6.4.0-20.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 4.12.14-10.203.1
- (no CPE)range: < 6.4.0-11.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 6.4.0-150600.10.14.1
- (no CPE)range: < 5.14.21-150500.33.69.1
- (no CPE)range: < 6.4.0-150600.8.14.1
- (no CPE)range: < 4.12.14-16.200.1
- (no CPE)range: < 4.12.14-16.200.1
- (no CPE)range: < 6.4.0-15061.6.coco15sp6.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 4.12.14-122.231.1
- (no CPE)range: < 4.12.14-10.203.1
- (no CPE)range: < 5.14.21-150500.13.73.1
- (no CPE)range: < 6.4.0-150600.10.14.1
- (no CPE)range: < 5.14.21-150500.55.83.1
- (no CPE)range: < 6.4.0-150600.23.25.1
- (no CPE)range: < 1-8.3.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
8- git.kernel.org/stable/c/15b7a03205b31bc5623378c190d22b7ff60026f1mitre
- git.kernel.org/stable/c/40f3d5cb0e0cbf7fa697913a27d5d361373bdcf5mitre
- git.kernel.org/stable/c/51d87f11dd199bbc6a85982b088ff27bde53b48amitre
- git.kernel.org/stable/c/535df7f896a568a8a1564114eaea49d002cb1747mitre
- git.kernel.org/stable/c/643293b68fbb6c03f5e907736498da17d43f0d81mitre
- git.kernel.org/stable/c/a54da4b787dcac60b598da69c9c0072812b8282dmitre
- git.kernel.org/stable/c/c80f454a805443c274394b1db0d1ebf477abd94emitre
- git.kernel.org/stable/c/e7e7d2b180d8f297cea6db43ea72402fd33e1a29mitre
News mentions
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