Bug 2427123 (CVE-2025-68763)

Summary: CVE-2025-68763 kernel: crypto: starfive - Correctly handle return of sg_nents_for_len
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2026-01-05 10:02:52 UTC 
In the Linux kernel, the following vulnerability has been resolved:

crypto: starfive - Correctly handle return of sg_nents_for_len

The return value of sg_nents_for_len was assigned to an unsigned long
in starfive_hash_digest, causing negative error codes to be converted
to large positive integers.

Add error checking for sg_nents_for_len and return immediately on
failure to prevent potential buffer overflows.
Comment 1 Vipul Nair 2026-01-05 10:36:04 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026010552-CVE-2025-68763-de7e@gregkh/T