Threats Tagged 'cve-2026-52986'

The SUSE Linux Enterprise 15 SP6 kernel was updated to fix various security issues: The following security issues were fixed: - CVE-2026-46056: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (bsc#1267435). - CVE-2026-46193: xfrm: ah: account for ESN high bits in async callbacks (bsc#1267656). - CVE-2026-46324: netfilter: nf_tables: Introduce functions freeing nft_hook objects (bsc#1267995). - CVE-2026-52967: smb/client: fix possible infinite loop and oob read in symlink_data() (bsc#1269181). - CVE-2026-52986: netfilter: nf_conntrack_sip: don't use simple_strtoul (bsc#1269289). - CVE-2026-53050: quota: Fix race of dquot_scan_active() with quota deactivation (bsc#1269188). - CVE-2026-53129: fs/mbcache: cancel shrink work before destroying the cache (bsc#1269633). - CVE-2026-53131: netfilter: require Ethernet MAC header before using eth_hdr() (bsc#1269773). - CVE-2026-53224: sctp: validate embedded INIT chunk and address list lengths in cookie (bsc#1269997). - CVE-2026-53246: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing (bsc#1269988). - CVE-2026-53250: xsk: cache csum_start/csum_offset to fix TOCTOU in xsk_skb_metadata() (bsc#1269808). - CVE-2026-53262: l2tp: pppol2tp: hold reference to session in pppol2tp_ioctl() (bsc#1270000). - CVE-2026-53267: netfilter: nft_ct: bail out on template ct in get eval (bsc#1269577). - CVE-2026-53354: arm64: errata: Mitigate TLBI errata on various Arm CPUs (bsc#1270230). - CVE-2026-53375: drm/amdgpu/vce: Prevent partial address patches (bsc#1271899). - CVE-2026-53388: fuse: re-lock request before replacing page cache folio (bsc#1271825). - CVE-2026-53391: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr (bsc#1271904). - CVE-2026-53402: fbdev: fbcon: fix out-of-bounds read in err_out of (bsc#1271908). - CVE-2026-63794: KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path (bsc#1271964). - CVE-2026-63802: blk-cgroup: fix UAF in __blkcg_rstat_flush() (bsc#1272282). - CVE-2026-63806: KVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned() (bsc#1272268). - CVE-2026-63807: KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level (bsc#1272263). - CVE-2026-63824: KEYS: fix overflow in keyctl_pkey_params_get_2() (bsc#1272180). - CVE-2026-63826: fbdev: fix use-after-free in store_modes() (bsc#1272183). - CVE-2026-63829: net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink (bsc#1272176). - CVE-2026-63884: drm/i915: Fix potential UAF in TTM object purge (bsc#1272573). - CVE-2026-63893: thunderbolt: property: Reject u32 wrap in tb_property_entry_valid() (bsc#1272607). - CVE-2026-63912: xfrm: esp: restore combined single-frag length gate (bsc#1272836). - CVE-2026-63917: ip6: vti: Use ip6_tnl.net in vti6_changelink() (bsc#1272904). - CVE-2026-63919: xfrm: input: hold netns during deferred transport reinjection (bsc#1272907). - CVE-2026-63921: ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate() (bsc#1272918). - CVE-2026-63922,CVE-2026-63924: ipv6: exthdrs: refresh nh after handling HAO option (bsc#1272855). - CVE-2026-63946: Bluetooth: ISO: fix UAF in iso_recv_frame (bsc#1272665). - CVE-2026-63952: memfd: deny writeable mappings when implying SEAL_WRITE (bsc#1272468). - CVE-2026-63968: ipv6: fix possible infinite loop in fib6_select_path() (bsc#1272466). - CVE-2026-63971: sctp: fix race between sctp_wait_for_connect and peeloff (bsc#1272678). - CVE-2026-63975: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp (bsc#1272694). - CVE-2026-63984: ipv6: rpl: fix hdrlen overflow in ipv6_rpl_srh_decompress() (bsc#1272865). - CVE-2026-63994: tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp() (bsc#1273035). - CVE-2026-64106: KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits (bsc#1272242). - CVE-2026-64189: netfilter: ipset: fix race between dump and ip_set_list resize (bsc#1272207). - CVE-2026-64560: posix-cpu-timers: Prevent UAF caused by non-leader exec() race (bsc#1273004). - CVE-2026-64561: KVM: x86: Check for invalid/obsolete root *after* making MMU pages available (bsc#1273231). - CVE-2026-64564: sctp: don't free the ASCONF's own transport in DEL-IP processing (bsc#1274072). - CVE-2026-64600: xfs: resample the data fork mapping after cycling ILOCK (bsc#1271526). The following non security issues were fixed: - Drivers: hv: vmbus: Set DMA coherent mask for VMBus devices (git-fixes). - hrtimers: Introduce hrtimer_setup() to replace hrtimer_init() (bsc#1271912). - ice: don't check has_ready_bitmap in E810 functions (bsc#1269981). - ice: factor out ice_ptp_rebuild_owner() (bsc#1269981). - ice: fix PTP Call Trace during PTP release (bsc#1269981). - ice: Fix PTP NULL pointer dereference during VSI rebuild (bsc#1269981). - ice: introduce PTP state machine (bsc#1269981). - ice: pass reset type to PTP reset functions (bsc#1269981). - ice: rename ice_ptp_tx_cfg_intr (bsc#1269981). - ice: rename verify_cached

This Red Hat security advisory addresses multiple vulnerabilities and bug fixes in the Linux kernel packages for Red Hat Enterprise Linux 8 and 9. The update includes fixes for a denial of service vulnerability in the qla2xxx SCSI driver (CVE-2025-68745) and numerous other security issues affecting Bluetooth, DRM, SCTP, Wi-Fi, and other kernel subsystems. The advisory also contains bug fixes and enhancements unrelated to security. The kernel update is rated as important by Red Hat and requires a system reboot to apply.

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_sip: don't use simple_strtoul Replace unsafe port parsing in epaddr_len(), ct_sip_parse_header_uri(), and ct_sip_parse_request() with a new sip_parse_port() helper that validates each digit against the buffer limit, eliminating the use of simple_strtoul() which assumes NUL-terminated strings. The previous code dereferenced pointers without bounds checks after sip_parse_addr() and relied on simple_strtoul() on non-NUL-terminated skb data. A port that reaches the buffer limit without a trailing character is also rejected as malformed. Also get rid of all simple_strtoul() usage in conntrack, prefer a stricter version instead. There are intentional changes: - Bail out if number is > UINT_MAX and indicate a failure, same for too long sequences. While we do accept 05535 as port 5535, we will not accept e.g. 'sip:10.0.0.1:005060'. While its syntactically valid under RFC 3261, we should restrict this to not waste cycles when presented with malformed packets with 64k '0' characters. - Force base 10 in ct_sip_parse_numerical_param(). This is used to fetch 'expire=' and 'rports='; both are expected to use base-10. - In nf_nat_sip.c, only accept the parsed value if its within the 1k-64k range. - epaddr_len now returns 0 if the port is invalid, as it already does for invalid ip addresses. This is intentional. nf_conntrack_sip performs lots of guesswork to find the right parts of the message to parse. Being stricter could break existing setups. Connection tracking helpers are designed to allow traffic to pass, not to block it. Based on an earlier patch from Jenny Guanni Qu <[email protected]>.

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