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kernel: Linux kernel: Denial of Service via unsafe requeue in rxrpc_recvmsg

🗓️ 23 Apr 2026 23:21:04Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 10 Views

Unprivileged user can cause denial of service and memory corruption via unsafe rxrpc_recvmsg requeue with AF_RXRPC and MSG_DONTWAIT MSG_PEEK.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-23066
4 Feb 202616:07
–attackerkb
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2-2026-3237 (ALAS-2026-3237)
8 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-115 (ALASKERNEL-5.10-2026-115)
1 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2026-119 (ALASKERNEL-5.4-2026-119)
8 Apr 202600:00
–nessus
Tenable Nessus		Debian dla-4664 : ata-modules-5.10.0-43-armmp-di - security update
3 Jul 202600:00
–nessus
Tenable Nessus		Debian dla-4665 : affs-modules-6.1.0-48-4kc-malta-di - security update
3 Jul 202600:00
–nessus
Tenable Nessus		Debian dla-4671 : linux-config-6.1 - security update
6 Jul 202600:00
–nessus
Tenable Nessus		Debian dsa-6238 : ata-modules-6.12.74+deb13+1-armmp-di - security update
30 Apr 202600:00
–nessus
Tenable Nessus		openSUSE 16 Security Update : kernel (openSUSE-SU-2026:20416-1)
29 Mar 202600:00
–nessus
Tenable Nessus		Photon OS 5.0: Linux PHSA-2026-5.0-0842
9 May 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.4aarch64bpftool7.3.0-427.121.1.el9_4bpftool-7.3.0-427.121.1.el9_4.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64lebpftool7.3.0-427.121.1.el9_4bpftool-7.3.0-427.121.1.el9_4.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xbpftool7.3.0-427.121.1.el9_4bpftool-7.3.0-427.121.1.el9_4.s390x.rpm
Red Hat Enterprise Linux9.4x86_64bpftool7.3.0-427.121.1.el9_4bpftool-7.3.0-427.121.1.el9_4.x86_64.rpm
Red Hat Enterprise Linux9.4aarch64bpftool-debuginfo7.3.0-427.121.1.el9_4bpftool-debuginfo-7.3.0-427.121.1.el9_4.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64lebpftool-debuginfo7.3.0-427.121.1.el9_4bpftool-debuginfo-7.3.0-427.121.1.el9_4.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xbpftool-debuginfo7.3.0-427.121.1.el9_4bpftool-debuginfo-7.3.0-427.121.1.el9_4.s390x.rpm
Red Hat Enterprise Linux9.4x86_64bpftool-debuginfo7.3.0-427.121.1.el9_4bpftool-debuginfo-7.3.0-427.121.1.el9_4.x86_64.rpm
Red Hat Enterprise Linux9.4aarch64kernel5.14.0-427.121.1.el9_4kernel-5.14.0-427.121.1.el9_4.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64lekernel5.14.0-427.121.1.el9_4kernel-5.14.0-427.121.1.el9_4.ppc64le.rpm
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12 Jul 2026 07:55Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.5 - 7.8
EPSS0.00129
CWE-416
linux kernelmemory corruptiondenial of serviceunsafe requeuerxrpc receive message
10