Threats Tagged 'cve-2026-31469'

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-10263: arm64: cputype: Add C1-Premium definitions (bsc#1266290). - CVE-2025-39894: netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm (bsc#1262430). - CVE-2025-40341: futex: Don't leak robust_list pointer on exec race (bsc#1255029). - CVE-2026-23248: perf: Make perf_pmu_unregister() useable (bsc#1259800). - CVE-2026-23394: Revert: "af_unix: Remove lock dance in unix_peek_fds()." (bsc#1260565). - CVE-2026-23451: bonding: prevent potential infinite loop in bond_header_parse() (bsc#1261604). - CVE-2026-31414: netfilter: nf_conntrack_expect: use expect->helper (bsc#1262085). - CVE-2026-31429: net: skb: fix cross-cache free of KFENCE-allocated skb head (bsc#1262392). - CVE-2026-31438: netfs: Fix kernel BUG in netfs_limit_iter() for ITER_KVEC iterators (bsc#1267824). - CVE-2026-31450: ext4: publish jinode after initialization (bsc#1262618). - CVE-2026-31452: ext4: convert inline data to extents when truncate exceeds inline size (bsc#1262620). - CVE-2026-31466: mm/huge_memory: fix folio isn't locked in softleaf_to_folio() (bsc#1267825). - CVE-2026-31469: virtio_net: Fix UAF on dst_ops when IFF_XMIT_DST_RELEASE is cleared and napi_tx is false (bsc#1267816). - CVE-2026-31479: drm/xe: always keep track of remap prev/next (bsc#1262765). - CVE-2026-31492: RDMA/irdma: Initialize free_qp completion before using it (bsc#1262748). - CVE-2026-31495: netfilter: ctnetlink: use netlink policy range checks (bsc#1262798). - CVE-2026-31499: Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del() (bsc#1262674). - CVE-2026-31502: team: fix header_ops type confusion with non-Ethernet ports (bsc#1263072). - CVE-2026-31555: futex: Clear stale exiting pointer in futex_lock_pi() retry path (bsc#1263178). - CVE-2026-31560: spi: spi-dw-dma: fix print error log when wait finish transaction (bsc#1263057). - CVE-2026-31596: ocfs2: handle invalid dinode in ocfs2_group_extend (bsc#1263319). - CVE-2026-31646: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool() (bsc#1263796). - CVE-2026-31647: idpf: fix PREEMPT_RT raw/bh spinlock nesting for async VC handling (bsc#1263581). - CVE-2026-31663: xfrm: hold device only for the asynchronous decryption (bsc#1263133). - CVE-2026-31664: xfrm: clear trailing padding in build_polexpire() (bsc#1263578). - CVE-2026-31665: netfilter: nft_ct: fix use-after-free in timeout object destroy (bsc#1263137). - CVE-2026-31670: net: rfkill: prevent unlimited numbers of rfkill events from being created (bsc#1263573). - CVE-2026-31673: af_unix: read UNIX_DIAG_VFS data under unix_state_lock (bsc#1263143). - CVE-2026-31674: netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check() (bsc#1263568). - CVE-2026-31680: net: ipv6: flowlabel: defer exclusive option free until RCU teardown (bsc#1263563). - CVE-2026-31693: cifs: some missing initializations on replay (bsc#1267744). - CVE-2026-31743: nvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy (bsc#1264067). - CVE-2026-31752: bridge: br_nd_send: validate ND option lengths (bsc#1264045). - CVE-2026-31771: Bluetooth: hci_event: move wake reason storage into validated event handlers (bsc#1264145). - CVE-2026-43010: bpf: Reject sleepable kprobe_multi programs at attach time (bsc#1264015). - CVE-2026-43014,CVE-2026-43015: net: macb: fix clk handling on PCI glue driver removal (bsc#1264010 bsc#1264012). - CVE-2026-43016: bpf: sockmap: Fix use-after-free of sk->sk_socket in sk_psock_verdict_data_ready() (bsc#1264007). - CVE-2026-43022: Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists (bsc#1264001). - CVE-2026-43024: netfilter: nf_tables: reject immediate NF_QUEUE verdict (bsc#1263930). - CVE-2026-43028: netfilter: x_tables: ensure names are nul-terminated (bsc#1263934). - CVE-2026-43034: bnxt_en: set backing store type from query type (bsc#1263998). - CVE-2026-43035: net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak (bsc#1263996). - CVE-2026-43036: net: use skb_header_pointer() for TCPv4 GSO frag_off check (bsc#1263993). - CVE-2026-43053: xfs: factor out xfs_attr3_node_entry_remove (bsc#1264084). - CVE-2026-43057: net: correctly handle tunneled traffic on IPV6_CSUM GSO fallback (bsc#1264056). - CVE-2026-43074: eventpoll: defer struct eventpoll free to RCU grace period (bsc#1264263). - CVE-2026-43080: l2tp: Drop large packets with UDP encap (bsc#1264236). - CVE-2026-43081: net: ipa: fix GENERIC_CMD register field masks for IPA v5.0+ (bsc#1264241). - CVE-2026-43083: net: ioam6: fix OOB and missing lock (bsc#1264266). - CVE-2026-43085: netfilter: nfnetlink_log: initialize nfgenmsg in NLMSG_DONE terminator (bsc#1264230). - CVE-2026-43086: ipvs: fix NULL deref in ip_vs_add_service error path (bsc#1264286). - CVE-2026-43089: xfrm_user: fix info leak in build_mapping() (bsc#1264261). - CVE-2026-43090: xfrm: fix refc

In the Linux kernel, the following vulnerability has been resolved: virtio_net: Fix UAF on dst_ops when IFF_XMIT_DST_RELEASE is cleared and napi_tx is false A UAF issue occurs when the virtio_net driver is configured with napi_tx=N and the device's IFF_XMIT_DST_RELEASE flag is cleared (e.g., during the configuration of tc route filter rules). When IFF_XMIT_DST_RELEASE is removed from the net_device, the network stack expects the driver to hold the reference to skb->dst until the packet is fully transmitted and freed. In virtio_net with napi_tx=N, skbs may remain in the virtio transmit ring for an extended period. If the network namespace is destroyed while these skbs are still pending, the corresponding dst_ops structure has freed. When a subsequent packet is transmitted, free_old_xmit() is triggered to clean up old skbs. It then calls dst_release() on the skb associated with the stale dst_entry. Since the dst_ops (referenced by the dst_entry) has already been freed, a UAF kernel paging request occurs. fix it by adds skb_dst_drop(skb) in start_xmit to explicitly release the dst reference before the skb is queued in virtio_net. Call Trace: Unable to handle kernel paging request at virtual address ffff80007e150000 CPU: 2 UID: 0 PID: 6236 Comm: ping Kdump: loaded Not tainted 7.0.0-rc1+ #6 PREEMPT ... percpu_counter_add_batch+0x3c/0x158 lib/percpu_counter.c:98 (P) dst_release+0xe0/0x110 net/core/dst.c:177 skb_release_head_state+0xe8/0x108 net/core/skbuff.c:1177 sk_skb_reason_drop+0x54/0x2d8 net/core/skbuff.c:1255 dev_kfree_skb_any_reason+0x64/0x78 net/core/dev.c:3469 napi_consume_skb+0x1c4/0x3a0 net/core/skbuff.c:1527 __free_old_xmit+0x164/0x230 drivers/net/virtio_net.c:611 [virtio_net] free_old_xmit drivers/net/virtio_net.c:1081 [virtio_net] start_xmit+0x7c/0x530 drivers/net/virtio_net.c:3329 [virtio_net] ... Reproduction Steps: NETDEV="enp3s0" config_qdisc_route_filter() { tc qdisc del dev $NETDEV root tc qdisc add dev $NETDEV root handle 1: prio tc filter add dev $NETDEV parent 1:0 \ protocol ip prio 100 route to 100 flowid 1:1 ip route add 192.168.1.100/32 dev $NETDEV realm 100 } test_ns() { ip netns add testns ip link set $NETDEV netns testns ip netns exec testns ifconfig $NETDEV 10.0.32.46/24 ip netns exec testns ping -c 1 10.0.32.1 ip netns del testns } config_qdisc_route_filter test_ns sleep 2 test_ns