EUVD-2026-77008
GHSA-f8w2-9vv9-pxwq
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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
Local attack via state files or CLI args with low-privilege user; single-byte stack overflow limits impact to crash (A:L) and minor stack corruption (I:L) with no confidentiality exposure.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
alsa-lib through 1.2.16.1 contains a stack buffer overflow in the __snd_ctl_ascii_elem_id_parse() function that writes one byte past a 64-byte buffer when parsing a name= field with 64 or more characters. Attackers can supply a long control-element identifier string through saved state files or command-line arguments to overwrite adjacent stack memory and crash the calling process.
AnalysisAI
Stack buffer overflow in alsa-lib through 1.2.16.1 allows local low-privilege attackers to crash any process consuming ALSA control-element identifiers by supplying a name= field of 64 or more characters via saved state files or command-line arguments. The off-by-one condition in __snd_ctl_ascii_elem_id_parse() (ctlparse.c:216-241) writes one byte past a 64-byte stack buffer, corrupting adjacent stack memory and causing process termination. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local system access with at least low-privilege user rights (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 4.8 (Medium) with vector AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L is well-calibrated for this vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the upstream fix from commit f84cd4ced7b36fddb8e4ee24404cf7c091d27020 in the alsa-project/alsa-lib repository, which corrects both off-by-one bounds checks in __snd_ctl_ascii_elem_id_parse() from `size < sizeof(buf)` to `size < sizeof(buf) - 1`. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-193 – Off-by-one Error
View allSame technique Buffer Overflow
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External POC / Exploit Code
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