CVE-2025-68763 json
crypto: starfive - Correctly handle return of sg_nents_for_len
published 2026-01-05 10 mo ago modified 2026-10-14 26 d ago also EUVD-2026-0891
- cvss
- —
- not scored
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 10%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Linux Linux 6.6.120, 6.12.63, 6.17.13, 6.18.2, 6.19
- linux Debian 13 6.12.63-1
- linux Debian 14 6.17.13-1
debian advisories DEBIAN-CVE-2025-68763
- linux Ubuntu 24.04 LTS 6.8.0-110.110
- linux Ubuntu 25.10 6.17.0-19.19
- linux-aws Ubuntu 24.04 LTS 6.8.0-1052.55
- linux-aws Ubuntu 25.10 6.17.0-1009.9
- linux-gcp Ubuntu 24.04 LTS 6.8.0-1054.57
- linux-gcp Ubuntu 25.10 6.17.0-1009.9
- linux-gke Ubuntu 24.04 LTS 6.8.0-1050.56
- linux-ibm Ubuntu 24.04 LTS 6.8.0-1051.51
ubuntu advisories UBUNTU-CVE-2025-68763
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kernel-source-longterm openSUSE Tumbleweed 6.18.16-1.1
- kernel-source openSUSE Tumbleweed 6.18.5-1.1
opensuse advisories openSUSE-SU-2026:10301-1openSUSE-SU-2026:10039-1
- git.kernel.org/stable/c/6cd14414394b4f3d6e1ed64b8241d1fcc2271820 commit
- git.kernel.org/stable/c/0c3854d65cc4402cb8c52d4d773450a06efecab6 commit
- git.kernel.org/stable/c/1af5c973dd744e29fa22121f43e8646b7a7a71a7 commit
- git.kernel.org/stable/c/9b3f71cf02e04cfaa482155e3078707fe7f8aef4 commit
- git.kernel.org/stable/c/e9eb52037a529fbb307c290e9951a62dd728b03d commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2025-68763 updated
kernel: crypto: starfive - Correctly handle return of sg_nents_for_len
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernelnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).
Affected products
- Linux Linux
Classification
- Technology feeds
References
- git.kernel.org /stable/c/6cd14414394b4f3d6e1ed64b8241d1fcc2271820
- git.kernel.org /stable/c/0c3854d65cc4402cb8c52d4d773450a06efecab6
- git.kernel.org /stable/c/1af5c973dd744e29fa22121f43e8646b7a7a71a7
- git.kernel.org /stable/c/9b3f71cf02e04cfaa482155e3078707fe7f8aef4
- git.kernel.org /stable/c/e9eb52037a529fbb307c290e9951a62dd728b03d
Sources
- CVE List CVE-2025-68763
- NVD CVE-2025-68763
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