ALSA: ctxfi: Fix potential OOB access in audio mixer handling (Linux Linux)

CVE-2026-23076
HIGH 7.1

At a glance

Source
NVD
EPSS
EPSS 0.18 % · percentile 8 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

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.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 8cc72361481f00253f1e468ade5795427386d593 < 6524205326e0c1a21263b5c14e48e14ef7e449ae ; affected 8cc72361481f00253f1e468ade5795427386d593 < afca7ff5d5d4d63a1acb95461f55ca9a729feedf ; affected 8cc72361481f00253f1e468ade5795427386d593 < 8c1d09806e1441bc6a54b9a4f2818918046d5174 ; affected 8cc72361481f00253f1e468ade5795427386d593 < a8c42d11b0526a89192bd2f79facb4c60c8a1f38 ; affected 8cc72361481f00253f1e468ade5795427386d593 < d77ba72558cd66704f0fb7e0969f697e87c0f71c ; affected 8cc72361481f00253f1e468ade5795427386d593 < 873e2360d247eeee642878fcc3398babff7e387c
Linux · Linuxaffected 2.6.31 ; unaffected 0 < 2.6.31 ; unaffected 5.10.249 ≤ 5.10.* ; unaffected 5.15.199 ≤ 5.15.* ; unaffected 6.1.162 ≤ 6.1.* ; unaffected 6.6.122 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD