CVE-2026-23076
ALSA: ctxfi: Fix potential OOB access in audio mixer handling
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.
INFO
Published Date :
Feb. 4, 2026, 5:16 p.m.
Last Modified :
March 18, 2026, 2:03 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Apply the provided patch to the Linux kernel source code.
- Rebuild and install the updated Linux kernel.
- Verify the patch resolves the OOB access in the ctxfi driver.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23076.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23076 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23076
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23076 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23076 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 18, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Added CWE CWE-125 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.199 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.162 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.122 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.68 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.8 *cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.31 up to (excluding) 5.10.249 Added Reference Type kernel.org: https://git.kernel.org/stable/c/61006c540cbdedea83b05577dc7fb7fa18fe1276 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6524205326e0c1a21263b5c14e48e14ef7e449ae Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/873e2360d247eeee642878fcc3398babff7e387c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8c1d09806e1441bc6a54b9a4f2818918046d5174 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a8c42d11b0526a89192bd2f79facb4c60c8a1f38 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/afca7ff5d5d4d63a1acb95461f55ca9a729feedf Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d77ba72558cd66704f0fb7e0969f697e87c0f71c Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 06, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/6524205326e0c1a21263b5c14e48e14ef7e449ae Added Reference https://git.kernel.org/stable/c/8c1d09806e1441bc6a54b9a4f2818918046d5174 Added Reference https://git.kernel.org/stable/c/afca7ff5d5d4d63a1acb95461f55ca9a729feedf -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 04, 2026
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/61006c540cbdedea83b05577dc7fb7fa18fe1276 Added Reference https://git.kernel.org/stable/c/873e2360d247eeee642878fcc3398babff7e387c Added Reference https://git.kernel.org/stable/c/a8c42d11b0526a89192bd2f79facb4c60c8a1f38 Added Reference https://git.kernel.org/stable/c/d77ba72558cd66704f0fb7e0969f697e87c0f71c