RHSA-2026:99139: Important: kernel security, bug fix, and enhancement update
The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: Revert "wireguard: device: enable threaded NAPI" (CVE-2026-52945) kernel: ethtool: coalesce: cap profile updates at NETDIMPARAMSNUMPROFILES (CVE-2026-63987) kernel: netfs: Fix potential for tearing in ->remoteisize and ->zeropoint (CVE-2026-64160) kernel: netfs: Fix early put of sink folio in netfsreadgaps() (CVE-2026-64061) kernel: net/smc: fix UAF in smccdcrxhandler() by pinning the socket (CVE-2026-64541) kernel: s390/zcrypt: Validate length for CCA AES cipher key requests (CVE-2026-68452) kernel: s390/zcrypt: Validate length for CCA ECC private key requests (CVE-2026-68451) kernel: s390/vfioccw: Cancel existing workqueues (CVE-2026-80553) kernel: s390/qeth: validate user buffer length in SNMP and ARP query ioctls (CVE-2026-80584) kernel: net: bridge: mcast: fix use-after-free of a master VLAN's multicast context (CVE-2026-80842) kernel: i3c: master: svc: bound IBI payload to the requested maxpayloadlen (CVE-2026-80951) kernel: s390/vfio-ap: Fix missing lock required to access list of apmatrixmdev objects (CVE-2026-89956) kernel: ALSA: seq: midi: Serialize input teardown with eventinput (CVE-2026-90207) kernel: kernel: strparser: use-after-free via msgtimerwork rearm after strpdone() cancellation () kernel: ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF (CVE-2026-98116) kernel: smb: client: validate absolute native symlink targets before NT fixups (CVE-2026-98318) kernel: s390/boot: Avoid IPL parameter append past command line (CVE-2026-98403) kernel: kernel: Denial of Service via unvalidated task in iSCSI management responses (CVE-2026-99152) kernel: kernel: Denial of service via unvalidated task tag in iSCSI Reject PDU (CVE-2026-99153) Bug Fix(es) and Enhancement(s): [AMDSERVER 10.2 Feature] Venice: EDAC Updates [rhel-10.2.z] (JIRA:RHEL-216563) kernel panic in percpucounteraddbatch() via submitbionoacct() due to NULL pointer [rhel-10.2.z] (JIRA:RHEL-279607) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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redhat/kernelto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-abi-stableliststo a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-debugto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-debug-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-debug-develto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-debug-modules-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-debug-modules-extrato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-debug-uki-virtto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-develto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-docto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-headersto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-modulesto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-modules-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-modules-extrato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-modules-extra-matchedto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-rt-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-rt-debugto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-rt-debug-modules-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-rt-debug-modules-extrato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-rt-develto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-rt-modules-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-rt-modules-extrato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-toolsto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-tools-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-tools-libsto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-uki-virtto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/libperf-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/perfto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/python3-perfto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/rtlato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/rvto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-debuginfo-common-s390xto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-zfcpdumpto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-debuginfo-common-ppc64leto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-core-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-debug-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-debug-core-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-debug-debuginfo-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-debug-devel-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-debug-devel-matched-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-debug-modules-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-debug-modules-core-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-debug-modules-extra-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-debuginfo-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-devel-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-devel-matched-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-modules-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-modules-core-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 64k-modules-extra-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debugto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debug-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debug-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debug-develto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debug-devel-matchedto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debug-modulesto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debug-modules-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debug-modules-extrato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-debuginfo-common-aarch64to a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-develto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-devel-matchedto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-headersto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-modulesto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-modules-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-modules-extrato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-modules-extra-matchedto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-core-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-debug-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-debug-core-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-debug-debuginfo-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-debug-devel-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-debug-modules-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-debug-modules-core-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-debug-modules-extra-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-debuginfo-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-devel-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-modules-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-modules-core-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rtto a version that resolves this vulnerability.Fixed in 64k-modules-extra-6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-debugto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-debug-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-debug-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-debug-develto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-debug-modulesto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-debug-modules-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-debug-modules-extrato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-develto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-modulesto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-modules-coreto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-rt-modules-extrato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-toolsto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-tools-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-tools-libsto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-uki-virtto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-uki-virt-addonsto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/libperf-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/perfto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/perf-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/python3-perfto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/python3-perf-debuginfoto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/rtlato a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/rvto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-cross-headersto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-tools-libs-develto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/libperfto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2 - Upgrade
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redhat/kernel-cross-headersto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/kernel-tools-libs-develto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Upgrade
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redhat/libperfto a version that resolves this vulnerability.Fixed in 6.12.0-211.75.1.el10_2.aa - Operational
Reboot the system after applying the kernel update; the update does not take effect until the system is rebooted.
Event History
Frequently Asked Questions
Which systems should be prioritized for this update?
Systems running the affected Red Hat kernel package variants should be prioritized, especially where exposed functionality includes networking, bridge multicast, SMC, I3C, ALSA sequencing, or s390-specific subsystems such as zcrypt, vfio, and qeth.
Are non-s390 systems affected by this advisory?
Yes. The listed fixes include non-s390 kernel components such as WireGuard, ethtool, netfs, SMC networking, bridge multicast, I3C, and ALSA. Several other fixes are specific to s390 systems.
How can I determine whether a host needs the update?
Check whether the host has any of the listed Red Hat kernel package variants installed, including kernel, kernel-rt, kernel-core, or kernel-debug packages. The provided data does not include fixed package versions, so version-level determination is not available here.