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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.

PUBLISHED Reserved 2025-04-16 | Published 2025-11-12 | Updated 2025-12-01 | Assigner Linux

Product status

Default status
unaffected

0653028e8f1c97fec30710813a001ad8a2ec34f4 (git) before 81cec07d303186d0d8c623ef8b5ecd3b81e94cf6
affected

0653028e8f1c97fec30710813a001ad8a2ec34f4 (git) before affc03d44921f493deaae1d33151e3067a6f9f8f
affected

0653028e8f1c97fec30710813a001ad8a2ec34f4 (git) before ab9a70cd2386a0d70c164b0905dd66bc9af52e77
affected

0653028e8f1c97fec30710813a001ad8a2ec34f4 (git) before 6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42
affected

Default status
affected

6.3
affected

Any version before 6.3
unaffected

6.6.112 (semver)
unaffected

6.12.53 (semver)
unaffected

6.17.3 (semver)
unaffected

6.18 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/81cec07d303186d0d8c623ef8b5ecd3b81e94cf6

git.kernel.org/...c/affc03d44921f493deaae1d33151e3067a6f9f8f

git.kernel.org/...c/ab9a70cd2386a0d70c164b0905dd66bc9af52e77

git.kernel.org/...c/6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42

cve.org (CVE-2025-40129)

nvd.nist.gov (CVE-2025-40129)

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