ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
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: ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events The DSP event handling code in hwdep_read() could write more bytes to the user buffer than requested, when a user provides a buffer smaller than the event header size (8 bytes). Fix by using min_t() to clamp the copy size, This ensures we never copy more than the user requested.
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 6.1.160, 6.6.120, 6.12.63, 6.17.13, 6.18.2, 6.19
Red Hat 4 advisories
- RHSA-2026:77301 Released 2026-10-07 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.172.1.el8_8, kernel-4.18.0-477.172.1.el8_8, kernel-abi-stablelists-4.18.0-477.172.1.el8_8 +14
- Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.172.1.el8_8, kernel-4.18.0-477.172.1.el8_8, kernel-abi-stablelists-4.18.0-477.172.1.el8_8 +14
- RHSA-2026:77216 Released 2026-10-07 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.220.1.el8_6, kernel-4.18.0-372.220.1.el8_6, kernel-abi-stablelists-4.18.0-372.220.1.el8_6 +14
- Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) bpftool-4.18.0-372.220.1.el8_6, kernel-4.18.0-372.220.1.el8_6, kernel-abi-stablelists-4.18.0-372.220.1.el8_6 +19
- RHSA-2026:21745 Released 2026-05-28 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-core-4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-debug-4.18.0-553.126.1.rt7.467.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-core-4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-debug-4.18.0-553.126.1.rt7.467.el8_10 +7
Show 1 more Red Hat advisories
- RHSA-2026:21706 Released 2026-05-28 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.126.1.el8_10, kernel-4.18.0-553.126.1.el8_10, kernel-abi-stablelists-4.18.0-553.126.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.126.1.el8_10
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2026:21706 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2026:77216 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.8) | Fixed | RHSA-2026:77301 |
| Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | Fixed | RHSA-2026:77216 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.8) | Fixed | RHSA-2026:77301 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2026:21706 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2026:21745 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2026:21745 |
Not affected: 4 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68347
- 2026-10-03 Alias added: GHSA-h6xr-332m-px9v
- 2026-10-07 Fix available: RHSA-2026:77216 · Red Hat
- 2026-10-07 Fix available: Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) · Red Hat
- 2026-10-07 Fix available: RHSA-2026:77301 · Red Hat
- 2026-10-07 Fix available: Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS TUS (v.8.8) · Red Hat
- 2026-10-16 CISA SSVC decision points changed
References
Other 6
- https://git.kernel.org/stable/c/16620f0617400746984362c3d6ac547eeae1d35f
- https://git.kernel.org/stable/c/ddd32ec66bc4eb6969fe835e4cc1c0706c6348fe
- https://git.kernel.org/stable/c/6275fd726d53a8ec724f20201cf3bd862711e17b
- https://git.kernel.org/stable/c/161291bac551821bba98eb4ea84c82338578d1b0
- https://git.kernel.org/stable/c/cdda0d06f8650e33255f79839f188bbece44117c
- https://git.kernel.org/stable/c/210d77cca3d0494ed30a5c628b20c1d95fa04fb1
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Sources
- CVE-2025-68347 · CVE Program
- CVE-2025-68347 · NVD
- FIRST EPSS
- GHSA-h6xr-332m-px9v · GitHub Advisory Database · CC BY 4.0
- CVE-2025-68347 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences