CVE-2026-25068

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.

Affected Software

VendorProductVersion RangeStatus
ALSA Projectalsa-lib1.2.2 <= 1.2.15.2affected
ALSA Projectalsa-lib5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40unaffected

Weaknesses

  • CWE-129: CWE-129 Improper Validation of Array Index

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References