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kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event()

🗓️ 12 Oct 2026 20:11:56Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 2 Views

Incorrect RCU use in Linux kernel RDMA/mlx4 mlx4_srq_event() leads to DoS.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb		CVE-2026-46181
28 May 202609:36
–attackerkb
nessus
Tenable Nessus		AlmaLinux 8 : kernel-rt (ALSA-2026:25120)
11 Jun 202600:00
–nessus
nessus
Tenable Nessus		AlmaLinux 8 : kernel (ALSA-2026:25121)
11 Jun 202600:00
–nessus
nessus
Tenable Nessus		AlmaLinux 9 : kernel (ALSA-2026:25217)
11 Jun 202600:00
–nessus
nessus
Tenable Nessus		CentOS Linux 7.9 [CIQ] Security Update: bpftool / kernel / kernel-abi-whitelists / kernel-debug / etc Multiple Vulnerabilities (ciqsa-2026_1433)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 8.6 [CIQ] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ciqsa-2026_1428)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 8 [CIQ] Security Update: kernel-rt / kernel-rt-core / kernel-rt-debug / kernel-rt-debug-core / etc Multiple Vulnerabilities (crlsa-2026_25120)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 8 [CIQ] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (crlsa-2026_25121)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (crxsa-2026_25121)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 9.2 [CIQ] Security Update: bpftool / kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (ciqsa-2026_1436)
1 Oct 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.8ppc64lekpatch-patch-5_14_0-687_10_11-10.el9_8kpatch-patch-5_14_0-687_10_1-1-10.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8x86_64kpatch-patch-5_14_0-687_10_11-10.el9_8kpatch-patch-5_14_0-687_10_1-1-10.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8ppc64lekpatch-patch-5_14_0-687_10_1-debuginfo1-10.el9_8kpatch-patch-5_14_0-687_10_1-debuginfo-1-10.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8x86_64kpatch-patch-5_14_0-687_10_1-debuginfo1-10.el9_8kpatch-patch-5_14_0-687_10_1-debuginfo-1-10.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8ppc64lekpatch-patch-5_14_0-687_10_1-debugsource1-10.el9_8kpatch-patch-5_14_0-687_10_1-debugsource-1-10.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8x86_64kpatch-patch-5_14_0-687_10_1-debugsource1-10.el9_8kpatch-patch-5_14_0-687_10_1-debugsource-1-10.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8ppc64lekpatch-patch-5_14_0-687_42_11-1.el9_8kpatch-patch-5_14_0-687_42_1-1-1.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8x86_64kpatch-patch-5_14_0-687_42_11-1.el9_8kpatch-patch-5_14_0-687_42_1-1-1.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8ppc64lekpatch-patch-5_14_0-687_42_1-debuginfo1-1.el9_8kpatch-patch-5_14_0-687_42_1-debuginfo-1-1.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8x86_64kpatch-patch-5_14_0-687_42_1-debuginfo1-1.el9_8kpatch-patch-5_14_0-687_42_1-debuginfo-1-1.el9_8.x86_64.rpm
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12 Oct 2026 20:39Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.17.8
EPSS0.00114
CWE-366
Linux kernelRDMA/mlx4mlx4_srq_event()RCU misuseDoS
2