High severity7.1NVD Advisory· Published Feb 4, 2026· Updated Jun 17, 2026
CVE-2026-23076
CVE-2026-23076
Description
In the Linux kernel, the following vulnerability has been resolved:
ALSA: ctxfi: Fix potential OOB access in audio mixer handling
In the audio mixer handling code of ctxfi driver, the conf field is used as a kind of loop index, and it's referred in the index callbacks (amixer_index() and sum_index()).
As spotted recently by fuzzers, the current code causes OOB access at those functions. | UBSAN: array-index-out-of-bounds in /build/reproducible-path/linux-6.17.8/sound/pci/ctxfi/ctamixer.c:347:48 | index 8 is out of range for type 'unsigned char [8]'
After the analysis, the cause was found to be the lack of the proper (re-)initialization of conj field.
This patch addresses those OOB accesses by adding the proper initializations of the loop indices.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
79- osv-coords70 versionspkg:linux/kernelpkg:rpm/suse/kernel-livepatch-SLE15-SP7-RT_Update_10&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-livepatch-SLE15-SP7_Update_10&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-obs-qa&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-obs-qa&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0
>= 2.6.31, < 5.10.249+ 69 more
- (no CPE)range: >= 2.6.31, < 5.10.249
- (no CPE)range: < 1-150700.1.3.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.4.0-150700.7.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 1-150700.15.3.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1.160000.2.8
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1.160000.2.8
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1.160000.2.8
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.4.0-150700.53.34.1.150700.17.23.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-150700.53.34.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.4.0-40.1.21.17
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.4.0-150700.7.34.1
- (no CPE)range: < 6.4.0-150700.7.34.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.4.0-40.1.21.17
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1.160000.2.8
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
- (no CPE)range: < 6.12.0-160000.27.1
(expand)+ 8 more
- (no CPE)
- (no CPE)range: 2.6.31
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=2.6.31,<5.10.249
- cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/61006c540cbdedea83b05577dc7fb7fa18fe1276nvdPatch
- git.kernel.org/stable/c/6524205326e0c1a21263b5c14e48e14ef7e449aenvdPatch
- git.kernel.org/stable/c/873e2360d247eeee642878fcc3398babff7e387cnvdPatch
- git.kernel.org/stable/c/8c1d09806e1441bc6a54b9a4f2818918046d5174nvdPatch
- git.kernel.org/stable/c/a8c42d11b0526a89192bd2f79facb4c60c8a1f38nvdPatch
- git.kernel.org/stable/c/afca7ff5d5d4d63a1acb95461f55ca9a729feedfnvdPatch
- git.kernel.org/stable/c/d77ba72558cd66704f0fb7e0969f697e87c0f71cnvdPatch
News mentions
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