CVE-2026-99182: ASoC: SOF: ipc4-topology: Fix shift-out-of-bounds for aggregated ALH capture
Noroxi assessment
Priority: Monitor (action score 0/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
- Fixed version: Linux Linux 5e1322787c5e424a570e87c8c2c25e37552cbe3b, 746de48c3a250f0c264105dcbfcdf0c5001e970b, a92dee3a2a5e1ef05d13731b2f5e2eb9a3125e4e; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 5e1322787c5e424a570e87c8c2c25e37552cbe3b, 746de48c3a250f0c264105dcbfcdf0c5001e970b, a92dee3a2a5e1ef05d13731b2f5e2eb9a3125e4e; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
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.
- Published
- Oct 28, 2026
- Updated
- Oct 30, 2026
- EPSS
- 0.1% · 6th percentile
- CWE
- —
Report tools
Action score
0
Monitor
Low priority for now.
- CVSS
- 0 / 40 · —
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
—
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 6.3affected
- 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c and later · before ef9342fa7433643f54de19b980e2aac0fae7201caffected · git
- 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c and later · before a92dee3a2a5e1ef05d13731b2f5e2eb9a3125e4eaffected · git
- 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c and later · before cad63a7798d6a6cac1fc68732595f0a3278ff6f0affected · git
- 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c and later · before 5e1322787c5e424a570e87c8c2c25e37552cbe3baffected · git
- 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c and later · before 746de48c3a250f0c264105dcbfcdf0c5001e970baffected · git
- before 6.3not affected · semver
- 6.6.161 and later · up to and including 6.6.*not affected · semver
- 6.12.115 and later · up to and including 6.12.*not affected · semver
- 6.18.59 and later · up to and including 6.18.*not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:13 | linux | before 6.12.115-2 | 6.12.115-2 |
| Debian:14 | linux | before 7.2.13-1 | 7.2.13-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
Published before and after this one in the same product
- ← EarlierCVE-2026-99180Oct 28, 2026 · unicode: free the map after a grace period31Monitor
- ← EarlierCVE-2026-99181Oct 28, 2026 · autofs: ignore notification errors from a replaced pipe0Monitor
- Later →CVE-2026-99183Oct 28, 2026 · accel/rocket: search every core slot when looking up a scheduler0Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 5e1322787c5e424a570e87c8c2c25e37552cbe3b | Vendor (CNA) |
| Linux Linux | 746de48c3a250f0c264105dcbfcdf0c5001e970b | Vendor (CNA) |
| Linux Linux | a92dee3a2a5e1ef05d13731b2f5e2eb9a3125e4e | Vendor (CNA) |
| Linux Linux | cad63a7798d6a6cac1fc68732595f0a3278ff6f0 | Vendor (CNA) |
| Linux Linux | ef9342fa7433643f54de19b980e2aac0fae7201c | Vendor (CNA) |
| azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 | Release Notes | Microsoft (MSRC) |
| azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 | 6.6.161.1-1 · Release Notes | Microsoft (MSRC) |
| debian:linux | 6.12.115-2 · Debian:13 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- Fix recordedsame day
- TodayNov 8, 2026+11 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
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Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-1423 · Oct 30, 2026(Linux Kernel Güvenlik Bildirimi)
Technical details
No CVSS vector for this record, so attack conditions can't be derived.
Weakness class (CWE)
—
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Exploit maturity— → none
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (4 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.