ALSA: ctxfi: Fix potential OOB access in audio mixer handling
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.
CVE-2026-23076
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-23076
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8cc72361481f00253f1e468ade5795427386d593",
"lessThan": "6524205326e0c1a21263b5c14e48e14ef7e449ae",
"versionType": "git"
},
{
"status": "affected",
"version": "8cc72361481f00253f1e468ade5795427386d593",
"lessThan": "afca7ff5d5d4d63a1acb95461f55ca9a729feedf",
"versionType": "git"
},
{
"status": "affected",
"version": "8cc72361481f00253f1e468ade5795427386d593",
"lessThan": "8c1d09806e1441bc6a54b9a4f2818918046d5174",
"versionType": "git"
},
{
"status": "affected",
"version": "8cc72361481f00253f1e468ade5795427386d593",
"lessThan": "a8c42d11b0526a89192bd2f79facb4c60c8a1f38",
"versionType": "git"
},
{
"status": "affected",
"version": "8cc72361481f00253f1e468ade5795427386d593",
"lessThan": "d77ba72558cd66704f0fb7e0969f697e87c0f71c",
"versionType": "git"
},
{
"status": "affected",
"version": "8cc72361481f00253f1e468ade5795427386d593",
"lessThan": "873e2360d247eeee642878fcc3398babff7e387c",
"versionType": "git"
},
{
"status": "affected",
"version": "8cc72361481f00253f1e468ade5795427386d593",
"lessThan": "61006c540cbdedea83b05577dc7fb7fa18fe1276",
"versionType": "git"
}
],
"programFiles": [
"sound/pci/ctxfi/ctamixer.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.31"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.31",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.249",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.199",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.162",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.122",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.68",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.8",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"sound/pci/ctxfi/ctamixer.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23076
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #39742 · Revision 1
- Added to Heist Feed
- Publisher date