CVE-2026-99182ASoC: SOF: ipc4-topology: Fix shift-out-of-bounds for aggregated ALH capture
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc4-topology: Fix shift-out-of-bounds for aggregated ALH capture When ch_count is smaller than blob->alh_cfg.device_count (e.g. a mono capture stream, such as a SmartMic, aggregated across multiple SDW links), step = ch_count / blob->alh_cfg.device_count truncates to 0. The subsequent GENMASK(step - 1, 0) then underflows step - 1 (u32) to UINT_MAX, causing GENMASK()'s internal shift to use an out-of-bounds exponent: UBSAN: shift-out-of-bounds in sound/soc/sof/ipc4-topology.c:2363:13 shift exponent 18446744069414584384 is too large for 64-bit type 'long unsigned int' Treat ch_count < device_count the same way as the existing "channels equal to output reference channels" case: apply the same ch_mask to every aggregated device instead of trying to split channels that can't be evenly divided.
Timeline
ID reserved
By Linux
- 33 days later
· 33 days later
Published
- 2 days later
· 2 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c – < ef9342fa7433643f54de19b980e2aac0fae7201c
- affected 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c – < a92dee3a2a5e1ef05d13731b2f5e2eb9a3125e4e
- affected 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c – < cad63a7798d6a6cac1fc68732595f0a3278ff6f0
- affected 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c – < 5e1322787c5e424a570e87c8c2c25e37552cbe3b
- affected 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c – < 746de48c3a250f0c264105dcbfcdf0c5001e970b
- affected 6.3
- unaffected < 6.3
- unaffected 6.6.161 – ≤ 6.6.*
- unaffected 6.12.115 – ≤ 6.12.*
- unaffected 6.18.59 – ≤ 6.18.*
- unaffected 7.2.13 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/ef9342fa7433643f54de19b980e2aac0fae7201c (opens in a new tab)
- https://git.kernel.org/stable/c/a92dee3a2a5e1ef05d13731b2f5e2eb9a3125e4e (opens in a new tab)
- https://git.kernel.org/stable/c/cad63a7798d6a6cac1fc68732595f0a3278ff6f0 (opens in a new tab)
- https://git.kernel.org/stable/c/5e1322787c5e424a570e87c8c2c25e37552cbe3b (opens in a new tab)
- https://git.kernel.org/stable/c/746de48c3a250f0c264105dcbfcdf0c5001e970b (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-111934 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-99182)Record last updated .