CVE-2026-53398
published 2026-07-19CVE-2026-53398: In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix SECINFO_NO_NAME decode error cleanup nfsd4_decode_secinfo_no_name() currently…
PriorityP347critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.51%
40.9th percentile
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().
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 07b68ff5c71cf4ed5443016d8eb116863c0a4d88 < 49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439 | 49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439 |
| linux | linux | >= 3fdc546462348b8a497c72bc894e0cde9f10fc40 < 5ec37edcb534f3fc92304be236d37f08e6545585 | 5ec37edcb534f3fc92304be236d37f08e6545585 |
| linux | linux | >= 3fdc546462348b8a497c72bc894e0cde9f10fc40 < 1e04be34cafae119e82bcaccd6d28a20f72a3647 | 1e04be34cafae119e82bcaccd6d28a20f72a3647 |
| linux | linux | >= 3fdc546462348b8a497c72bc894e0cde9f10fc40 < 161d1aaeb04d620d3692639700512bb5038c1e10 | 161d1aaeb04d620d3692639700512bb5038c1e10 |
| linux | linux | >= 3fdc546462348b8a497c72bc894e0cde9f10fc40 < c8a24effd96d4779e2ad779654682304491c55a5 | c8a24effd96d4779e2ad779654682304491c55a5 |
| linux | linux | >= 3fdc546462348b8a497c72bc894e0cde9f10fc40 < 46eb17d45be69d28c7a23ea03283b207426a8232 | 46eb17d45be69d28c7a23ea03283b207426a8232 |
| linux | linux | >= 3fdc546462348b8a497c72bc894e0cde9f10fc40 < 9e18e83b8846a5c3fe13fc8a464b4865d33996c6 | 9e18e83b8846a5c3fe13fc8a464b4865d33996c6 |
| linux | linux | >= 5.10.220 < 5.10.260 | 5.10.260 |
| linux | linux | >= 5.15.154 < 5.15.211 | 5.15.211 |
| linux | linux | >= 5e76b25d7cc82c148d391c0c43b884e6427cb302 < 8836405abdc53ca3dd5fc68b2cf6f8f012fad011 | 8836405abdc53ca3dd5fc68b2cf6f8f012fad011 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 5.10.220 < 5.10.260 | 5.10.260 |
| linux | linux_kernel | >= 5.15.154 < 5.15.211 | 5.15.211 |
| linux | linux_kernel | >= 6.1 < 6.1.177 | 6.1.177 |
| linux | linux_kernel | >= 6.13 < 6.18.38 | 6.18.38 |
| linux | linux_kernel | >= 6.19 < 7.1.3 | 7.1.3 |
| linux | linux_kernel | >= 6.2 < 6.6.144 | 6.6.144 |
| linux | linux_kernel | >= 6.7 < 6.12.95 | 6.12.95 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_redhat9.8CRITICAL
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GHSA
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_sty
ghsa_unreviewed·2026-07-19
CVE-2026-53398 [CRITICAL] 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_sty
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().
Red Hat
kernel: NFSD: Fix SECINFO_NO_NAME decode error cleanup
vendor_redhat·2026-07-19·CVSS 9.8
CVE-2026-53398 [CRITICAL] CWE-824 kernel: NFSD: Fix SECINFO_NO_NAME decode error cleanup
kernel: NFSD: Fix SECINFO_NO_NAME decode error cleanup
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
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/161d1aaeb04d620d3692639700512bb5038c1e10https://git.kernel.org/stable/c/1e04be34cafae119e82bcaccd6d28a20f72a3647https://git.kernel.org/stable/c/46eb17d45be69d28c7a23ea03283b207426a8232https://git.kernel.org/stable/c/49de5d31dd8fdebf78bdeaf196b0ca5cd5c75439https://git.kernel.org/stable/c/5ec37edcb534f3fc92304be236d37f08e6545585https://git.kernel.org/stable/c/8836405abdc53ca3dd5fc68b2cf6f8f012fad011https://git.kernel.org/stable/c/9e18e83b8846a5c3fe13fc8a464b4865d33996c6https://git.kernel.org/stable/c/c8a24effd96d4779e2ad779654682304491c55a5
2026-07-19
Published