CVE-2026-53398

CVE CVE-2026-53398EUVD EUVD-2026-45520Published 2026-07-19T12:01:59.000ZLast changed 2026-08-05T12:35:37.000ZCVSS 9.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix SECINFO_NO_NAME decode error cleanup nfsd4_decode_secinfo_no_name() currently initializes sin_exp after decoding sin_style. If the XDR stream is truncated, the decoder returns nfserr_bad_xdr before sin_exp is initialized. Since commit 3fdc54646234 ("NFSD: Reduce amount of struct nfsd4_compoundargs that needs clearing"), the inline iops array is not cleared between RPC calls. A failed SECINFO_NO_NAME decode can therefore leave sin_exp holding stale union contents from a previous operation. The error response path still invokes nfsd4_secinfo_no_name_release(), which calls exp_put() on a non-NULL sin_exp. Initialize sin_exp before the first failable decode step, matching nfsd4_decode_secinfo().

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 5.15.154 <5.15.211; patch: 6.1.177; patch: 0; 3fdc546462348b8a497c72bc894e0cde9f10fc40 <46eb17d45be69d28c7a23ea03283b207426a8232; patch: 5.10.260; 3fdc546462348b8a497c72bc894e0cde9f10fc40 <1e04be34cafae119e82bcaccd6d28a20f72a3647; 3fdc546462348b8a497c72bc894e0cde9f10fc40 <5ec37edcb534f3fc92304be236d37f08e6545585; patch: 5.15.211; 6.1; 07b68ff5c71cf4ed5443016d8eb116863c0a4d88 <49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439; patch: 6.6.144; patch: 6.12.95; 5.10.220 <5.10.260; 3fdc546462348b8a497c72bc894e0cde9f10fc40 <c8a24effd96d4779e2ad779654682304491c55a5; 5e76b25d7cc82c148d391c0c43b884e6427cb302 <8836405abdc53ca3dd5fc68b2cf6f8f012fad011; 3fdc546462348b8a497c72bc894e0cde9f10fc40 <9e18e83b8846a5c3fe13fc8a464b4865d33996c6; 3fdc546462348b8a497c72bc894e0cde9f10fc40 <161d1aaeb04d620d3692639700512bb5038c1e10; patch: 7.1.3; patch: 7.2-rc1; patch: 6.18.38

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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