CVE-2026-23076None▾ SunlitIn 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'…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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.
Linux >= 8cc72361481f00253f1e468ade5795427386d593 < 6524205326e0c1a21263b5c14e48e14ef7e449aeLinux >= 8cc72361481f00253f1e468ade5795427386d593 < afca7ff5d5d4d63a1acb95461f55ca9a729feedfLinux >= 8cc72361481f00253f1e468ade5795427386d593 < 8c1d09806e1441bc6a54b9a4f2818918046d5174Linux >= 8cc72361481f00253f1e468ade5795427386d593 < a8c42d11b0526a89192bd2f79facb4c60c8a1f38Linux >= 8cc72361481f00253f1e468ade5795427386d593 < d77ba72558cd66704f0fb7e0969f697e87c0f71cLinux >= 8cc72361481f00253f1e468ade5795427386d593 < 873e2360d247eeee642878fcc3398babff7e387cLinux >= 8cc72361481f00253f1e468ade5795427386d593 < 61006c540cbdedea83b05577dc7fb7fa18fe1276Linux 2.6.31Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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