Threats Tagged 'cve-2026-46152'

This Red Hat security advisory addresses multiple vulnerabilities in the Linux kernel packages used in Red Hat Enterprise Linux 7 Extended Lifecycle Support and related variants. The key security fixes include validation of nested VLAN headers (CVE-2026-31684), improved checks in netfilter's xt_tcpmss module (CVE-2026-43190), and correction of a wifi mac80211 issue (CVE-2026-46152). Additional kernel fixes address race conditions and panic scenarios. These updates are important to maintain kernel security and stability. A system reboot is required after applying the update.

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: 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: tcp: fix potential race in tcp_v6_syn_recv_sock() (CVE-2026-43198) * 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) 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. 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: tcp: fix potential race in tcp_v6_syn_recv_sock() (CVE-2026-43198) * 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) 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: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474) * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669) * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787) * kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772) * kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260) * kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279) * kernel: scsi: qla2xxx: Completely fix fcport double free (CVE-2026-43414) * kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331) * kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984) * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056) * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152) * kernel: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117) * kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145) * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125) * kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173) * kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166) * kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135) Bug Fix(es) and Enhancement(s): * RHEL9.4 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [rhel-9.8.z] (JIRA:RHEL-166048) * [RHEL 9.8] Hung tasks during both suspend and hibernate operations on systems with Intel E810 NICs [rhel-9.8.z] (JIRA:RHEL-175699) * DPLL: Add support for pin operational state [rhel-9.8.z] (JIRA:RHEL-175820) * DPLL: Add support for fractional frequency offset between pin and device [rhel-9.8.z] (JIRA:RHEL-175823) * ibmveth Adapter Freeze with Small MSS [rhel-9.8.z] (JIRA:RHEL-178308) * RHEL9.4 - s390/mm: Add missing secure storage access fixups [rhel-9.8.z] (JIRA:RHEL-183317) * rbd: eliminate a race in lock_dwork draining on unmap [rhel-9.8.z] (JIRA:RHEL-183130) 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: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474) * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669) * kernel: rxrpc: Fix RxGK token loading to check bounds (CVE-2026-31641) * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787) * kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786) * kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056) * kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772) * kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260) * kernel: crypto: caam - fix overflow on long hmac keys (CVE-2026-43330) * kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331) * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056) * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152) * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125) * kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173) * kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166) Bug Fix(es) and Enhancement(s): * RHEL10.0 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [rhel-10.2.z] (JIRA:RHEL-166047) * RHEL9.5 crash due to lpfc NULL ndlp->vport [rhel-10.2.z] (JIRA:RHEL-171774) * objtool static_call check blocks build of out-of-tree livepatch modules on RHEL 10.2 GA kernels ? missing upstream revert f495054bd12e (JIRA:RHEL-178495) * ibmveth Adapter Freeze with Small MSS [rhel-10.2.z] (JIRA:RHEL-179723) * rbd: eliminate a race in lock_dwork draining on unmap [rhel-10.2.z] (JIRA:RHEL-183127) * RHEL10.0 - s390/mm: Add missing secure storage access fixups [rhel-10.2.z] (JIRA:RHEL-183319) * [RHEL10.2.z] Enable Pretimeout Watchdog Panic Functionality on x86 (JIRA:RHEL-182299) 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: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669) * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787) * kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786) * kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110) * kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329) * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056) * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152) * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125) 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669) * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787) * kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786) * kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110) * kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329) * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056) * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152) * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125) 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.

A vulnerability in the Linux kernel's mac80211 WiFi subsystem was identified where the function ieee80211_invoke_fast_rx() improperly declared a per-invocation variable rx_result as static. This caused concurrent callers to share and overwrite the same instance, leading to incorrect packet processing. The issue was fixed by making rx_result an automatic variable to ensure each invocation maintains its own result. This vulnerability is tracked as CVE-2026-46152 and affects version 3.0 of the Linux kernel. Red Hat has issued security advisories providing patches for affected kernel packages. Systems must be updated and rebooted to apply the fix.

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: drop stray 'static' from fast-RX rx_result ieee80211_invoke_fast_rx() is documented as safe for parallel RX, but its per-invocation rx_result is declared static. Concurrent callers then share one instance and can overwrite each other's result between ieee80211_rx_mesh_data() and the switch on res. That can make a packet that was queued or consumed by ieee80211_rx_mesh_data() fall through into ieee80211_rx_8023(), or make a packet that should continue return as queued. Make res an automatic variable so each invocation keeps its own result.