CVE-2026-25068 (GCVE-0-2026-25068)

Vulnerability from cvelistv5 – Published: 2026-01-29 19:08 – Updated: 2026-05-25 23:41
VLAI
Title
alsa-lib 1.2.15.2 Topology Decoder Heap-based Buffer Overflow
Summary
alsa-lib versions 1.2.2 up to and including 1.2.15.2, prior to commit 5f7fe33, contain 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.
Severity
4.6 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-29 20:23 UTC
CWE
  • CWE-129 - Improper Validation of Array Index
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6474 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
ALSA Project alsa-lib Affected: 1.2.2 , ≤ 1.2.15.2 (custom)
Unaffected: 5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40 (git)
    cpe:2.3:a:alsa-project:alsa-lib:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Sajeeb Lohani (sml555 / prodigysml) VulnCheck
Show details on NVD website
To clipboard 

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