soundwire: fix bug in sdw_add_element_group_count found by syzkaller
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: soundwire: fix bug in sdw_add_element_group_count found by syzkaller The original implementation caused an out-of-bounds memory access in the sdw_add_element_group_count for-loop when i == num. for (i = 0; i <= num; i++) { if (rate == group->rates[i] && lane == group->lanes[i]) ... To fix this error, the function now checks for existing rate/lane entries in the group(a function parameter) using a for-loop before adding them. No functional changes apart from this fix.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-72488
- 2026-10-03 Alias added: GHSA-m46v-696m-pmpf
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-21 Fix available: Linux/Linux@5c3ce6d3559ce57e6c3108aa9ecf7b32764188c5, Linux/[email protected], Linux/[email protected] +1 · CNA
- 2026-10-21 2 new references · CNA
- 2026-10-30 Fix available: Linux/[email protected], Linux/Linux@c35474cf6a7d0891ebebbeda08ce34b602885ab6 · CNA
- 2026-10-30 1 new reference · CNA
References
Other 6
- https://git.kernel.org/stable/c/c35474cf6a7d0891ebebbeda08ce34b602885ab6
- https://git.kernel.org/stable/c/a2275dce05e6d1cce69bf68f23ea7a63c0c54bae
- https://git.kernel.org/stable/c/5c3ce6d3559ce57e6c3108aa9ecf7b32764188c5
- https://git.kernel.org/stable/c/a454f61747c97e2eadaa7a35ffc1f4b1645c6a53
- https://git.kernel.org/stable/c/e483a406a23a92d5202e8d324f206e127eef48ff
- https://git.kernel.org/stable/c/f772ff5a0e6758fd412803c09e03ba3bca5f5878
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Sources
- CVE-2026-72488 · CVE Program
- CVE-2026-72488 · NVD
- FIRST EPSS
- GHSA-m46v-696m-pmpf · GitHub Advisory Database · CC BY 4.0
- CVE-2026-72488 · Red Hat security data · CC BY 4.0
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