CVE-2026-23076
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 7.1 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-125 · Out-of-bounds read
- Record status
- Modified
Affected
- Linux Kernel < 5.10.249
- Linux Kernel < 5.15.199
- Linux Kernel < 6.1.162
- Linux Kernel < 6.6.122
- Linux Kernel < 6.12.68
- Linux Kernel < 6.18.8
- Linux Kernel 6.19
Attack profile CVSS 3.1 · 7.1
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-23076.md and follow it. Check whether this project is affected by CVE-2026-23076. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/61006c540cbdedea83b05577dc7fb7fa18fe1276
- https://git.kernel.org/stable/c/6524205326e0c1a21263b5c14e48e14ef7e449ae
- https://git.kernel.org/stable/c/873e2360d247eeee642878fcc3398babff7e387c
- https://git.kernel.org/stable/c/8c1d09806e1441bc6a54b9a4f2818918046d5174
- https://git.kernel.org/stable/c/a8c42d11b0526a89192bd2f79facb4c60c8a1f38
- https://git.kernel.org/stable/c/afca7ff5d5d4d63a1acb95461f55ca9a729feedf
- https://git.kernel.org/stable/c/d77ba72558cd66704f0fb7e0969f697e87c0f71c
References
- https://git.kernel.org/stable/c/61006c540cbdedea83b05577dc7fb7fa18fe1276
- https://git.kernel.org/stable/c/6524205326e0c1a21263b5c14e48e14ef7e449ae
- https://git.kernel.org/stable/c/873e2360d247eeee642878fcc3398babff7e387c
- https://git.kernel.org/stable/c/8c1d09806e1441bc6a54b9a4f2818918046d5174
- https://git.kernel.org/stable/c/a8c42d11b0526a89192bd2f79facb4c60c8a1f38
- https://git.kernel.org/stable/c/afca7ff5d5d4d63a1acb95461f55ca9a729feedf
- https://git.kernel.org/stable/c/d77ba72558cd66704f0fb7e0969f697e87c0f71c