Threat Intelligence Database

Red Hat has released a security advisory for Red Hat Enterprise Linux 9.6 Extended Update Support addressing four kernel vulnerabilities affecting netfilter nf_tables, blk-mq cached requests, slab zeroing behavior, and SCTP transport handling. The update also includes bug fixes and enhancements for Intel drivers. Systems must be rebooted after applying the update to activate the fixes. The advisory rates the security impact as Important. No CVSS score is provided. No known exploits are reported in the wild.

Red Hat has released a security advisory for multiple vulnerabilities in the Linux kernel packages of Red Hat Enterprise Linux 10. These vulnerabilities include out-of-bounds reads, buffer overflows, use-after-free conditions, denial of service, and privilege escalation issues. The update also contains bug fixes and enhancements. A system reboot is required after applying the update. Red Hat recommends prompt installation to mitigate potential risks.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: crypto: af_alg - zero initialize memory allocated via sock_kmalloc (CVE-2025-71113) * kernel: scsi: core: Wake up the error handler when final completions race against each other (CVE-2026-23110) * kernel: Linux kernel: xfrm single-frag length not properly limited () * kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels (CVE-2026-46099) * kernel: fanotify: fix false positive on permission events (CVE-2026-46150) * kernel: drm: Set old handle to NULL before prime swap in change_handle (CVE-2026-46215) * kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp (CVE-2026-53071) * kernel: can: bcm: thrtimer use-after-free during RX operation teardown () Bug Fix(es) and Enhancement(s): * [RHEL9] tools/lib/perf/Makefile: libperf includes appended after CFLAGS causes parallel build race, breaking kernel builds [rhel-9.8.z] (JIRA:RHEL-183980) * [RHEL-9.8.z]: mlx5: include bug fixes (JIRA:RHEL-188121) * dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync() [rhel-9.8.z] (JIRA:RHEL-212061) 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.

This advisory addresses security vulnerabilities and bug fixes in the Linux kernel packages for Red Hat Enterprise Linux 8. Two security issues are fixed: a user-triggerable WARN_ON() in the RDMA mana driver (CVE-2026-46117) and a missing channel lock in the Bluetooth l2cap component (CVE-2026-53071). The update also resolves a kernel deadlock issue related to lock order. The update is rated as important by Red Hat Product Security and requires a system reboot to take effect.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027) * kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (CVE-2026-46113) * kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359) 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.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163) * kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499) * kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166) 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.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (CVE-2025-71066) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (CVE-2026-46113) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359) 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.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (CVE-2025-71066) * kernel: sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (CVE-2026-46227) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (CVE-2026-46113) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359) 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.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Bluetooth: Fix use-after-free bugs caused by sco_sock_timeout (CVE-2024-27398) * kernel: Bluetooth: SCO: Fix UAF on sco_sock_timeout (CVE-2024-50125) * 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: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027) * kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279) * kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125) * 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) Bug Fix(es) and Enhancement(s): * Kernel panic while shutting down ice driver due to use-after-free [rhel-9.4.z] (JIRA:RHEL-177523) * crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode [rhel-9.4.z] (JIRA:RHEL-182538) 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.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: eventpoll: defer struct eventpoll free to RCU grace period (CVE-2026-43074) * kernel: eventpoll: fix ep_remove struct eventpoll / struct file UAF (CVE-2026-46242) 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. Additional Changes: For detailed information on changes in this release, see the NVIDIA for RHEL 10 Release Notes linked from the References section.