Threats Tagged 'cve-2026-68117'

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Linux kernel: Denial of Service in qla2xxx SCSI driver due to improper command handling after chip reset (CVE-2025-68745) * kernel: drm/xe: Open-code GGTT MMIO access protection (CVE-2026-23466) * kernel: drm/xe: always keep track of remap prev/next (CVE-2026-31479) * kernel: drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib (CVE-2026-31566) * kernel: drm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat (CVE-2026-31656) * kernel: rtnetlink: add missing netlink_ns_capable() check for peer netns (CVE-2026-31692) * kernel: Bluetooth: SMP: force responder MITM requirements before building the pairing response (CVE-2026-43334) * kernel: drm/i915: Fix potential overflow of shmem scatterlist length (CVE-2026-43368) * kernel: drm/amdgpu: Fix use-after-free race in VM acquire (CVE-2026-43370) * kernel: Bluetooth: serialize accept_q access (CVE-2026-52918) * kernel: sctp: diag: reject stale associations in dump_one path (CVE-2026-52917) * kernel: net: pull headers in qdisc_pkt_len_segs_init() (CVE-2026-53091) * kernel: iommu/amd: Fix clone_alias() to use the original device's devid (CVE-2026-53053) * kernel: Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER (CVE-2026-53072) * kernel: net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove (CVE-2026-52947) * kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() (CVE-2026-53256) * kernel: wifi: nl80211: reject oversized EMA RNR lists (CVE-2026-53182) * kernel: Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend (CVE-2026-53209) * kernel: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing (CVE-2026-53246) * kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers (CVE-2026-53254) * kernel: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done (CVE-2026-63801) * kernel: scsi: scsi_transport_fc: Widen FPIN pname walker counter to u32 (CVE-2026-63889) * kernel: sctp: fix race between sctp_wait_for_connect and peeloff (CVE-2026-63971) * kernel: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp (CVE-2026-63975) * kernel: Bluetooth: HIDP: fix missing length checks in hidp_input_report() (CVE-2026-63947) * kernel: Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync (CVE-2026-63944) * kernel: Bluetooth: ISO: fix UAF in iso_recv_frame (CVE-2026-63946) * kernel: Bluetooth: ISO: serialize iso_sock_clear_timer with socket lock (CVE-2026-63945) * kernel: wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb (CVE-2026-64117) * kernel: wifi: iwlwifi: mld: fix TSO segmentation explosion when AMSDU is disabled (CVE-2026-64037) * kernel: ixgbevf: fix use-after-free in VEPA multicast source pruning (CVE-2026-64113) * kernel: wifi: iwlwifi: mld: validate sta_mask before ffs() in BA session handlers (CVE-2026-64255) * kernel: wifi: mac80211: fix MLE defragmentation (CVE-2026-64515) * kernel: mm/khugepaged: write all dirty file folios when collapsing (CVE-2026-68086) * kernel: Linux kernel: Wi-Fi subsystem out-of-bounds read via crafted frames (CVE-2026-68402) * kernel: sctp: fix auth_hmacs array size in struct sctp_cookie (CVE-2026-68376) * kernel: wifi: cfg80211: validate PMSR FTM preamble range (CVE-2026-68406) * kernel: tipc: clear sock->sk on the failed-insert path in tipc_sk_create() (CVE-2026-68117) * kernel: sctp: auth: verify auth requirement when auth_chunk is NULL (CVE-2026-68300) * kernel: drm/xe/pt: Reset current_op in xe_pt_update_ops_init() (CVE-2026-68264) * kernel: sctp: validate stream count in sctp_process_strreset_inreq() (CVE-2026-68315) * kernel: dm-verity: fix buffer overflow in FEC calculation (CVE-2026-72098) Bug Fix(es) and Enhancement(s): * gfs2: Various xfstests fixes [rhel-9.8.z] (JIRA:RHEL-178219) * rtla-timerlat-top doesn't stop properly when threshold is reached on multiple CPUs at once [rhel-9.8.z] (JIRA:RHEL-193025) * qede: build_skb failure causes off-by-one BD ring corruption and kernel panic [rhel-9.8.z] (JIRA:RHEL-193050) * Customer needs "netfilter: nfnetlink_queue: optimize verdict lookup with hash table" patch [rhel-9.8.z] (JIRA:RHEL-224489) 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.

In the Linux kernel, the following vulnerability has been resolved: tipc: clear sock->sk on the failed-insert path in tipc_sk_create() When tipc_sk_create() fails to insert the new socket (tipc_sk_insert() returns non-zero), its error path frees the sk with sk_free() but leaves sock->sk pointing at the freed object: if (tipc_sk_insert(tsk)) { sk_free(sk); pr_warn("Socket create failed; port number exhausted\n"); return -EINVAL; } This is harmless for plain socket(): the syscall layer clears sock->ops before releasing, so tipc_release() is never called. It is not harmless on the accept() path. tipc_accept() creates the pre-allocated child socket with tipc_sk_create(net, new_sock, 0, kern); on failure it leaves new_sock->sk dangling and new_sock->ops non-NULL, and do_accept() then fput()s the new file, so __sock_release() -> tipc_release() runs lock_sock(new_sock->sk) on the freed sk -- a use-after-free write of the sk_lock spinlock. tipc_release() already guards this exact "failed accept() releases a pre-allocated child" case with "if (sk == NULL) return 0;", but the guard is bypassed because tipc_sk_create() left sock->sk non-NULL (dangling) rather than NULL. Clear sock->sk on the failed-insert path so the existing tipc_release() NULL check fires and the use-after-free is avoided. The tipc_sk_insert() failure is reached when the per-netns socket rhashtable hits its max_size (tsk_rht_params.max_size = 1048576, ~2M elements) -- i.e. once a netns holds ~2M TIPC sockets every insert returns -E2BIG. BUG: KASAN: slab-use-after-free in lock_sock_nested (net/core/sock.c:3839) Write of size 8 at addr ffff8880047cdc38 by task init/1 lock_sock_nested (net/core/sock.c:3839) tipc_release (net/tipc/socket.c:638) __sock_release (net/socket.c:710) sock_close (net/socket.c:1501) __fput (fs/file_table.c:512) Allocated by task 1: sk_alloc (net/core/sock.c:2308) tipc_sk_create (net/tipc/socket.c:487) tipc_accept (net/tipc/socket.c:2744) do_accept (net/socket.c:2034) Freed by task 1: __sk_destruct (net/core/sock.c:2391) tipc_sk_create (net/tipc/socket.c:504) tipc_accept (net/tipc/socket.c:2744) do_accept (net/socket.c:2034)