Issued at: 2026-09-30
Updated at: 2026-09-30
Advisory content derived from Red Hat RHSA-2026:72624, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: kernel security, bug fix, and enhancement update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 (CVE-2026-46076)
* kernel: ext4: fix e4b bitmap inconsistency reports (CVE-2026-45942)
* kernel: KVM: arm64: Reassign nested_mmus array behind mmu_lock (CVE-2026-46317)
* kernel: fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() (CVE-2026-53341)
* kernel: perf/core: Detach event groups during remove_on_exec (CVE-2026-64556)
* kernel: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets (CVE-2026-68299)
* kernel: crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() (CVE-2026-80522)
* kernel: perf: Reject exited events as group leaders (CVE-2026-74753)
* kernel: nvme-tcp: reject a read that transferred too few bytes (CVE-2026-89480)
* kernel: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation (CVE-2026-89775)
Bug Fix(es) and Enhancement(s):
* KVM: s390: Limit adapter indicator access to mapped page [rhel-10.2.z] (JIRA:Rocky Linux-188661)
* crypto: xxhash64 should not be fips approved [rhel-10.2.z] (JIRA:Rocky Linux-254943)
* kata-tdx TD vCPU stuck at reset vector (EIP=0xFFF0) on Intel Xeon 6 (Granite Rapids / Sierra Forest) ? guest never executes. (10.2.z) (JIRA:Rocky Linux-260402)
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.