CVE-2025-40129sunrpc: fix null pointer dereference on zero-length checksum
- 7.5HighCVSS base score
- 0.57%Exploitation in 30 daysEPSS · top 52% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: sunrpc: fix null pointer dereference on zero-length checksum In xdr_stream_decode_opaque_auth(), zero-length checksum.len causes checksum.data to be set to NULL. This triggers a NPD when accessing checksum.data in gss_krb5_verify_mic_v2(). This patch ensures that the value of checksum.len is not less than XDR_UNIT.
Timeline
ID reserved
By Linux
- 7 months later
· 7 months later
Published
- 11 months later
· 11 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Deferred | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.57% · top 52% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected 0653028e8f1c97fec30710813a001ad8a2ec34f4 – < 81cec07d303186d0d8c623ef8b5ecd3b81e94cf6
- affected 0653028e8f1c97fec30710813a001ad8a2ec34f4 – < affc03d44921f493deaae1d33151e3067a6f9f8f
- affected 0653028e8f1c97fec30710813a001ad8a2ec34f4 – < ab9a70cd2386a0d70c164b0905dd66bc9af52e77
- affected 0653028e8f1c97fec30710813a001ad8a2ec34f4 – < 6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42
- affected 6.3
- unaffected < 6.3
- unaffected 6.6.112 – ≤ 6.6.*
- unaffected 6.12.53 – ≤ 6.12.*
- unaffected 6.17.3 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References4
- https://git.kernel.org/stable/c/81cec07d303186d0d8c623ef8b5ecd3b81e94cf6 (opens in a new tab)
- https://git.kernel.org/stable/c/affc03d44921f493deaae1d33151e3067a6f9f8f (opens in a new tab)
- https://git.kernel.org/stable/c/ab9a70cd2386a0d70c164b0905dd66bc9af52e77 (opens in a new tab)
- https://git.kernel.org/stable/c/6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-124954 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-40129)Record last updated .