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kernel: rxrpc: Fix RxGK token loading to check bounds

🗓️ 17 Aug 2026 14:25:46Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 15 Views

Integer overflow in rxrpc_preparse_xdr_yfs_rxgk causes heap buffer overflow enabling code execution or DoS.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB		CVE-2026-31641
24 Apr 202614:44
–attackerkb
nessus
Tenable Nessus		AlmaLinux 10 : kernel (ALSA-2026:27288)
26 Jun 202600:00
–nessus
nessus
Tenable Nessus		Oracle Linux 10 : kernel (ELSA-2026-27288)
6 Aug 202600:00
–nessus
nessus
Tenable Nessus		RHEL 10 : kernel (RHSA-2026:27288)
21 Jun 202600:00
–nessus
nessus
Tenable Nessus		RHEL 10 : kpatch-patch-6_12_0-211_16_1 (RHSA-2026:55618)
18 Aug 202600:00
–nessus
nessus
Tenable Nessus		RockyLinux 10 : kernel (RLSA-2026:27288)
22 Jun 202600:00
–nessus
nessus
Tenable Nessus		Linux Distros Unpatched Vulnerability : CVE-2026-31641
27 Apr 202600:00
–nessus
astralinux
AstraLinux		Astra Linux – Vulnerability in Linux 5.10
20 May 202605:53
–astralinux
bdu_fstec
BDU FSTEC		The vulnerability of the rxrpc_preparse_xdr_yfs_rxgk() function in the net/rxrpc/key.c module, which is part of the RxRPC session support in the Linux operating system’s kernel, allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.
25 Aug 202600:00
–bdu_fstec
circl
Circl		CVE-2026-31641
28 Apr 202605:00
–circl
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.2ppc64lekpatch-patch-6_12_0-211_16_11-6.el10_2kpatch-patch-6_12_0-211_16_1-1-6.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2x86_64kpatch-patch-6_12_0-211_16_11-6.el10_2kpatch-patch-6_12_0-211_16_1-1-6.el10_2.x86_64.rpm
Red Hat Enterprise Linux10.2ppc64lekpatch-patch-6_12_0-211_16_1-debuginfo1-6.el10_2kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2x86_64kpatch-patch-6_12_0-211_16_1-debuginfo1-6.el10_2kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.x86_64.rpm
Red Hat Enterprise Linux10.2ppc64lekpatch-patch-6_12_0-211_16_1-debugsource1-6.el10_2kpatch-patch-6_12_0-211_16_1-debugsource-1-6.el10_2.ppc64le.rpm

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12 Sep 2026 10:42Current
6.7Medium risk
Vulners AI Score6.7
CVSS 3.17.8
EPSS0.00143
CWE-190
rxrpcinteger overflowheap buffer overflowprivilege escalationdenial of servicearbitrary code executionLinux kernel
15