PT-2026-5330 · Alsa-Lib+2 · Alsa-Lib+2
CVSS v4.0
4.6
Medium
| Vector | AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Name of the Vulnerable Software and Affected Versions
alsa-lib versions 1.2.2 through 1.2.15.2
Description
alsa-lib contains a heap-based buffer overflow in the topology mixer control decoder. The
tplg decode control mixer1() function reads the num channels field from untrusted .tplg data and uses it as a loop bound without validating it against the fixed-size channel array SND TPLG MAX CHAN. A crafted topology file with an excessive num channels value can cause out-of-bounds heap writes, leading to a crash.Recommendations
Update to a version of alsa-lib after commit 5f7fe33.
Exploit
Fix
Improper Validation of Array Index
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Ubuntu
Alsa-Lib