Threat Intelligence Database

A high severity vulnerability (CVE-2025-40244) in the Linux kernel's HFS+ filesystem driver was identified and resolved. The issue involved an uninitialized value detected by Kernel Memory Sanitizer (KMSAN) in the __hfsplus_ext_cache_extent() function, which could lead to kernel panic and potentially allow an attacker with local privileges to cause denial of service or escalate privileges. The vulnerability was reported by syzbot and fixed in kernel versions after 6.12.0-rc5. No known exploits are reported in the wild.

A vulnerability in the Linux kernel futex subsystem related to the CLONE_THREAD requirement for private default hash allocation has been resolved. The issue involved incorrect assumptions about concurrency when sharing memory mappings (mm) in ways other than pthread semantics, leading to use-after-free bugs. This could cause kernel memory corruption and crashes. The vulnerability has been addressed by loosening the check to cover any CLONE_VM clone except vfork, preventing the race conditions. Red Hat has released security updates for Red Hat Enterprise Linux 9 and 10 to fix this issue. The updates require system reboot to take effect.

Red Hat has issued a security advisory for the Linux kernel packages in Red Hat Enterprise Linux 8 addressing two vulnerabilities: CVE-2026-46117 and CVE-2026-53071. The first vulnerability involves a user-triggerable WARN_ON() in the RDMA mana driver, and the second involves a missing channel lock in the Bluetooth l2cap component. The update also includes bug fixes and enhancements. Systems must be rebooted after applying the update for the fixes to take effect.

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: Linux kernel: Denial of Service due to memory leak in tpm2_load_cmd (CVE-2025-71147) * kernel: flex_proportions: make fprop_new_period() hardirq safe (CVE-2026-23168) * kernel: cxl/port: Fix use after free of parent_port in cxl_detach_ep() (CVE-2026-31530) * kernel: xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete (CVE-2026-46116) * 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: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl() (CVE-2026-52976) * kernel: drm/xe/dma-buf: fix UAF with retry loop (CVE-2026-52950) * kernel: ice: fix double-free of tx_buf skb (CVE-2026-53009) * 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): * nfsd_file slab cache objects remaining on kmem_cache_shutdown during nfsd teardown while running bz1477872 testcase (JIRA:RHEL-173103) * tools/lib/perf/Makefile: libperf includes appended after CFLAGS causes parallel build race, breaking kernel builds [rhel-10.2.z] (JIRA:RHEL-183975) * [RHEL10-debug]: BUG: KASAN: slab-use-after-free in __pv_queued_spin_lock_slowpath [rhel-10.2.z] (JIRA:RHEL-186311) * ice: driver update 2026-06, part 1 [rhel-10.2.z] (JIRA:RHEL-191324) 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 denial of service vulnerability due to a deadlock was identified in the sctp_auto_asconf_init function within the Linux kernel's SCTP subsystem. This flaw allows local users with limited privileges to trigger a deadlock, potentially causing the system to crash. The vulnerability has been assigned CVE-2024-0639 and is rated as medium severity. Red Hat has released kernel updates addressing this issue in Red Hat Enterprise Linux 9 and its variants. Applying the update and rebooting the system mitigates the vulnerability.

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: 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: 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: 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: 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.