scsi: ufs: core: Validate string descriptors
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 1 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Validate string descriptors The string descriptor length includes a two-byte header while the UTF-16 payload starts after it. utf16s_to_utf8s() expects a count of UTF-16 code units, not bytes. Passing the payload byte count can make it read beyond the descriptor buffer. Validate that the payload has an even byte count, pass a code-unit count to the converter, and allocate sufficient UTF-8 output space. The raw string buffer starts after the descriptor header but its size is bLength. Copying bLength bytes from that pointer can read beyond the response buffer. Allocate a zeroed bLength-sized buffer and copy only the UTF-16 payload. This preserves the raw buffer size consumed by the RPMB device-ID ABI while avoiding the overread.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.57, 7.2.6, 7.3
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 |
Not affected: 6 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-92480
- 2026-10-03 Alias added: GHSA-m5gj-j8cw-f6g4
- 2026-10-16 Fix available: Linux/[email protected], Linux/Linux@f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4 · CNA
- 2026-10-16 1 new reference · CNA
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-20 Affected versions changed · Red Hat
- 2026-10-20 CVSS score added · Red Hat
- 2026-10-21 Fix available: Linux/Linux@02dd1a65dff842d9360a38ebe243dc8f6adbbaf5, Linux/Linux@566109f1ee4e389b4effab43b0ce1fdab302e9de, Linux/[email protected] +1 · CNA
- 2026-10-21 2 new references · CNA
- 2026-10-30 Fix available: Linux/Linux@22c076f72ad67d89dab58d9c97a17c33e8130e82, Linux/[email protected] · CNA
- 2026-10-30 1 new reference · CNA
- 2026-11-01 Affected versions changed · Red Hat
References
Other 6
- https://git.kernel.org/stable/c/22c076f72ad67d89dab58d9c97a17c33e8130e82
- https://git.kernel.org/stable/c/566109f1ee4e389b4effab43b0ce1fdab302e9de
- https://git.kernel.org/stable/c/02dd1a65dff842d9360a38ebe243dc8f6adbbaf5
- https://git.kernel.org/stable/c/f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4
- https://git.kernel.org/stable/c/66da25277256b6bf4c3fdbf3c9bfd43324c9cf25
- https://git.kernel.org/stable/c/d96e83d028d7d8762e424e49c671d49ac2ecf14f
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Sources
- CVE-2026-92480 · CVE Program
- CVE-2026-92480 · NVD
- FIRST EPSS
- GHSA-m5gj-j8cw-f6g4 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-92480 · 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