CVE-2026-23076
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/61006c540cbdedea83b05577dc7fb7fa18fe1276Patch
- https://git.kernel.org/stable/c/6524205326e0c1a21263b5c14e48e14ef7e449aePatch
- https://git.kernel.org/stable/c/873e2360d247eeee642878fcc3398babff7e387cPatch
- https://git.kernel.org/stable/c/8c1d09806e1441bc6a54b9a4f2818918046d5174Patch
- https://git.kernel.org/stable/c/a8c42d11b0526a89192bd2f79facb4c60c8a1f38Patch
- https://git.kernel.org/stable/c/afca7ff5d5d4d63a1acb95461f55ca9a729feedfPatch
- https://git.kernel.org/stable/c/d77ba72558cd66704f0fb7e0969f697e87c0f71cPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.