CVE-2026-53398NFSD: Fix SECINFO_NO_NAME decode error cleanup
Updated under an hour ago ()
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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().
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 5e76b25d7cc82c148d391c0c43b884e6427cb302 before 8836405abdc53ca3dd5fc68b2cf6f8f012fad011; from 07b68ff5c71cf4ed5443016d8eb116863c0a4d88 before 49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439; from 3fdc546462348b8a497c72bc894e0cde9f10fc40 before 5ec37edcb534f3fc92304be236d37f08e6545585; 3fdc546462348b8a497c72bc894e0cde9f10fc40 builds before 1e04be34cafae119e82bcaccd6d28a20f72a3647; from 3fdc546462348b8a497c72bc894e0cde9f10fc40 before 161d1aaeb04d620d3692639700512bb5038c1e10; from 3fdc546462348b8a497c72bc894e0cde9f10fc40 before c8a24effd96d4779e2ad779654682304491c55a5; from 3fdc546462348b8a497c72bc894e0cde9f10fc40 before 46eb17d45be69d28c7a23ea03283b207426a8232; from 3fdc546462348b8a497c72bc894e0cde9f10fc40 before 9e18e83b8846a5c3fe13fc8a464b4865d33996c6; and 2 more ranges | CNA record |
linux linux_kernel linux:linux_kernel | from 5.10.220 before 5.10.260; from 5.15.154 before 5.15.211; from 6.1 before 6.1.177; from 6.2 before 6.6.144; from 6.7 before 6.12.95; from 6.13 before 6.18.38; from 6.19 before 7.1.3 | NVD |
References
- https://git.kernel.org/stable/c/8836405abdc53ca3dd5fc68b2cf6f8f012fad011patch
- https://git.kernel.org/stable/c/49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439patch
- https://git.kernel.org/stable/c/5ec37edcb534f3fc92304be236d37f08e6545585patch
- https://git.kernel.org/stable/c/1e04be34cafae119e82bcaccd6d28a20f72a3647patch
- https://git.kernel.org/stable/c/161d1aaeb04d620d3692639700512bb5038c1e10patch
- https://git.kernel.org/stable/c/c8a24effd96d4779e2ad779654682304491c55a5patch
- https://git.kernel.org/stable/c/46eb17d45be69d28c7a23ea03283b207426a8232patch
- https://git.kernel.org/stable/c/9e18e83b8846a5c3fe13fc8a464b4865d33996c6patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.