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.
CVE-2026-25068
“—” beside the score: it is equal to the CVSS score beside it.
This medium-severity CVE scores 4.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (9th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-4970 (ENISA EUVD) · GHSA-x6vq-264g-8wcx (GitHub Security Advisories)Source: ENISA EUVD
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 4.6
- EG Score
- 4.6MEDIUMmedium confidence
- EG Risk
- 21EG Risk 21/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity46% × 45%Impact severity (EG Severity): CVSS 4.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.2% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.2%
- EPSS %ILE
- 9th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (4.6): severity, escalated by confirmed exploitation. This CVE's 4.6 is its impact severity (EG Severity), not escalated.
- EG Severity
- 4.6 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
- EG Likelihood
- 0.2% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
January 29, 2026
Last Modified
June 17, 2026
Advisory Details (3)
Auto-updated Aug 9, 2026[SECURITY] [DLA 4469-1] alsa-lib security update
https://lists.debian.org/debian-lts-announce/2026/02/msg00008.htmlalsa-lib 1.2.15.2 Topology Decoder Heap-based Buffer Overflow | Advisories | VulnCheck
https://www.vulncheck.com/advisories/alsa-lib-topology-decoder-heap-based-buffer-overflowcommit 5f7fe33002d2 (alsa-project/alsa-lib)
Fix landed in alsa-project/alsa-lib commit 5f7fe33002d2 — awaiting tagged release
https://github.com/alsa-project/alsa-lib/commit/5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40Vendor Advisories for CVE-2026-25068(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(2)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libatopology2t64 (1.2.14-1ubuntu1.1) @ questing | 2026-06-08 | ubuntu |
| redhat | alsa-lib-main-1.2.15.3-3.1.hum1 | 2026-04-10 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(4 across 4 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| alsa-lib | 1.2.4-1.1 |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| alsa-lib | 1.2.10-1 ... 1.2.9-2 (23 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| alsa-lib | 1.2.14-1 |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| alsa-lib | 1.2.14-1 ... 1.2.15.3-1 (6 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(2)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 8× in last 7d / 39× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 99 of 240 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 141 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-31 01:55 UTCOSV refresh
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-25 14:40 UTCEG score recompute
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-23 04:41 UTCEG score recompute
- 2026-10-23 04:41 UTCVendor advisory
- 2026-10-23 04:41 UTCGHSA enrichmentGHSA-x6vq-264g-8wcx
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-18 03:53 UTCEG score recompute
- 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
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- 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-12 16:19 UTCEG score recompute
- 2026-10-11 20:01 UTCEG score recompute
- 2026-10-11 17:14 UTCEG score recompute
- 2026-10-11 14:46 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-08 18:35 UTCOSV refresh
- 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-09-29 15:21 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-24 14:03 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-09-19 00:30 UTCOSV refresh
- 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-08-31 04:03 UTCOSV refresh
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
- 2026-08-14 11:53 UTCEG score recompute
- 2026-08-14 11:53 UTCVendor advisory
- 2026-08-14 11:53 UTCGHSA enrichmentGHSA-x6vq-264g-8wcx
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-08-13 04:00 UTCEG score recompute
- 2026-08-13 04:00 UTCVendor advisory
- 2026-08-13 04:00 UTCGHSA enrichmentGHSA-x6vq-264g-8wcx
- 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-08-09 16:26 UTCEG score recompute
- 2026-08-09 16:26 UTCVendor advisory
- 2026-08-09 16:26 UTCGHSA enrichmentGHSA-x6vq-264g-8wcx
- 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-08-07 23:11 UTCEG score recompute
- 2026-08-07 23:11 UTCVendor advisory
- 2026-08-07 23:11 UTCGHSA enrichmentGHSA-x6vq-264g-8wcx
- 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 8th percentile
- 2026-08-06 04:42 UTCEG score recompute
- 2026-08-06 04:42 UTCVendor advisory
Related CVEs(same product + same CWE)
Same product
5 shownDebian:11:alsa-lib · Debian:12:alsa-lib
Frequently asked(5)
What is CVE-2026-25068?
When was the CVE record for CVE-2026-25068 published?
Is CVE-2026-25068 actively exploited?
What is the CVSS score of CVE-2026-25068?
How do I remediate CVE-2026-25068?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-25068
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