Threats Tagged 'cve-2026-31684'

This Red Hat security advisory addresses multiple vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 7 Extended Lifecycle Support. The issues include validation of nested VLAN headers, improper use of task references in rtmutex, defensive unhashing of xfrm_state lists, and prevention of NULL pointer dereference in futex requeue operations. These vulnerabilities have been rated with an important security impact and require a kernel update and system reboot to apply the fixes.

Multiple security vulnerabilities have been identified and fixed in the Red Hat Enterprise Linux Real Time kernel-rt packages. These issues include validation flaws in nested VLAN headers, improper use of task references in mutex removal, defensive unhashing of xfrm_state lists, and prevention of NULL pointer dereference in futex requeue operations. The update addresses these vulnerabilities to improve kernel stability and security. Systems must be rebooted after applying the update for changes to take effect.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183) * kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408) * kernel: eventpoll: defer struct eventpoll free to RCU grace period (CVE-2026-43074) * kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279) * kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984) * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152) * kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189) * kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135) * kernel: eventpoll: fix ep_remove struct eventpoll / struct file UAF (CVE-2026-46242) * kernel: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry (CVE-2026-46316) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359) Bug Fix(es) and Enhancement(s): * Possible THP Stalls on Multi-NUMA Systems for HANA on RHEL [rhel-9.6.z] (JIRA:RHEL-164774) * crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode [rhel-9.6.z] (JIRA:RHEL-182539) 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.