CVE Explorer
CVE-2026-25068
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"alsa-lib","vendor":"ALSA Project","versions":[{"lessThanOrEqual":"1.2.15.2","status":"affected","version":"1.2.2","versionType":"custom"},{"status":"unaffected","version":"5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40","versionType":"git"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:4f85bc32a55d97e4b25c660517585933a8fe50134f2d8a41283147d8e3b7801f · sha256:09002362549720aa… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.6,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NO…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:4f85bc32a55d97e4b25c660517585933a8fe50134f2d8a41283147d8e3b7801f · sha256:09002362549720aa… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-129","description":"CWE-129 Improper Validation of Array Index","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:4f85bc32a55d97e4b25c660517585933a8fe50134f2d8a41283147d8e3b7801f · sha256:09002362549720aa… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"tags":["patch"],"url":"https://github.com/alsa-project/alsa-lib/commit/5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:4f85bc32a55d97e4b25c660517585933a8fe50134f2d8a41283147d8e3b7801f · sha256:09002362549720aa… · /containers/cna/references/0
{"url":"https://lists.debian.org/debian-lts-announce/2026/02/msg00008.html"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:4f85bc32a55d97e4b25c660517585933a8fe50134f2d8a41283147d8e3b7801f · sha256:09002362549720aa… · /containers/adp/1/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/alsa-lib-topology-decoder-heap-based-buffer-overflow"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:4f85bc32a55d97e4b25c660517585933a8fe50134f2d8a41283147d8e3b7801f · sha256:09002362549720aa… · /containers/cna/references/1
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.