CVE-2025-40129
sunrpc: fix null pointer dereference on zero-length checksum
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Nov 12, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
0653028e8f1c97fec30710813a001ad8a2ec34f4 < 81cec07d303186d0d8c623ef8b5ecd3b81e94cf6 0653028e8f1c97fec30710813a001ad8a2ec34f4 < affc03d44921f493deaae1d33151e3067a6f9f8f 0653028e8f1c97fec30710813a001ad8a2ec34f4 < ab9a70cd2386a0d70c164b0905dd66bc9af52e77 0653028e8f1c97fec30710813a001ad8a2ec34f4 < 6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42
Linux / Linux
6.3
References
git.kernel.org: https://git.kernel.org/stable/c/81cec07d303186d0d8c623ef8b5ecd3b81e94cf6 git.kernel.org: https://git.kernel.org/stable/c/affc03d44921f493deaae1d33151e3067a6f9f8f git.kernel.org: https://git.kernel.org/stable/c/ab9a70cd2386a0d70c164b0905dd66bc9af52e77 git.kernel.org: https://git.kernel.org/stable/c/6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42