7.1

CVE-2026-23076

ALSA: ctxfi: Fix potential OOB access in audio mixer handling

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.31 < 5.10.249
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.199
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.162
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.122
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.68
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.8
Linux ≫ Linux Kernel Version6.19 Updaterc1
Linux ≫ Linux Kernel Version6.19 Updaterc2
Linux ≫ Linux Kernel Version6.19 Updaterc3
Linux ≫ Linux Kernel Version6.19 Updaterc4
Linux ≫ Linux Kernel Version6.19 Updaterc5
Linux ≫ Linux Kernel Version6.19 Updaterc6
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.026
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.1 1.8 5.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

https://git.kernel.org/stable/c/a8c42d11b0526a89192bd2f79facb4c60c8a1f38
Patch
https://git.kernel.org/stable/c/d77ba72558cd66704f0fb7e0969f697e87c0f71c
Patch
https://git.kernel.org/stable/c/873e2360d247eeee642878fcc3398babff7e387c
Patch
https://git.kernel.org/stable/c/61006c540cbdedea83b05577dc7fb7fa18fe1276
Patch
https://git.kernel.org/stable/c/6524205326e0c1a21263b5c14e48e14ef7e449ae
Patch
https://git.kernel.org/stable/c/8c1d09806e1441bc6a54b9a4f2818918046d5174
Patch
https://git.kernel.org/stable/c/afca7ff5d5d4d63a1acb95461f55ca9a729feedf
Patch