SUSE-SU-2026:3616-1

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to fix various security issues:

The following security issues were fixed:

• CVE-2022-4994: KVM: x86: wean fast IN from emulator_pio_in (bsc#1273097).
• CVE-2023-53995: net: ipv4: fix one memleak in __inet_del_ifa() (bsc#1255616).
• CVE-2026-46052: ceph: only d_add() negative dentries when they are unhashed (bsc#1267494).
• CVE-2026-46056: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (bsc#1267435).
• CVE-2026-46145: RDMA/mana: Validate rx_hash_key_len (bsc#1267715).
• CVE-2026-46193: xfrm: ah: account for ESN high bits in async callbacks (bsc#1267656).
• CVE-2026-52956: libceph: Fix potential out-of-bounds access in __ceph_x_decrypt() (bsc#1269172).
• CVE-2026-52958: libceph: Fix potential out-of-bounds access in osdmap_decode() (bsc#1269174).
• 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-2026-53131: netfilter: require Ethernet MAC header before using eth_hdr() (bsc#1269773).
• CVE-2026-53196: USB: serial: io_ti: fix heap overflow in get_manuf_info() (bsc#1269986).
• 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-2026-53256: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() (bsc#1269993).
• CVE-2026-53260: preempt: Provide preempt_[dis|en]able_nested() (bsc#1269731).
• CVE-2026-53267: netfilter: nft_ct: bail out on template ct in get eval (bsc#1269577).
• CVE-2026-53357: Bluetooth: fix UAF in l2cap_sock_cleanup_listen() vs l2cap_conn_del() (bsc#1270257).
• 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-2026-63806: 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-2026-63829: net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink (bsc#1272176).
• CVE-2026-63893: thunderbolt: property: Reject u32 wrap in tb_property_entry_valid() (bsc#1272607).
• 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-2026-63971: 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:

• hrtimers: Introduce hrtimer_setup() to replace hrtimer_init() (bsc#1271912).
• mkspec-dtb: Skip missing DTBs.
• pkspec-dtb: Fix dtb-al rename.
• posix-cpu-timers: Cleanup the firing logic (bsc#1271912).
• posix-cpu-timers: Correctly update timer status in posix_cpu_timer_del() (bsc#1271912).
• posix-cpu-timers: Do not arm SIGEV_NONE timers (bsc#1271912).
• posix-cpu-timers: Handle interval timers correctly in timer_get() (bsc#1271912).
• posix-cpu-timers: Handle SIGEV_NONE timers correctly in timer_get() (bsc#1271912).
• posix-cpu-timers: Handle SIGEV_NONE timers correctly in timer_set() (bsc#1271912).
• posix-cpu-timers: Make k_itimer::it_active consistent (bsc#1271912).
• posix-cpu-timers: Remove incorrect comment in posix_cpu_timer_set() (bsc#1271912).
• posix-cpu-timers: Replace old expiry retrieval in posix_cpu_timer_set() (bsc#1271912).
• posix-cpu-timers: Simplify posix_cpu_timer_set() (bsc#1271912).
• posix-cpu-timers: Split up posix_cpu_timer_get() (bsc#1271912).
• posix-cpu-timers: Use @now instead of @val for clarity (bsc#1271912).
• posix-timers: Add proper state tracking (bsc#1271912).
• posix-timers: Avoid direct access to hrtimer clockbase (bsc#1271912).
• posix-timers: Clarify posix_timer_fn() comments (bsc#1271912).
• posix-timers: Clear overrun in common_timer_set() (bsc#1271912).
• posix-timers: Consolidate signal queueing (bsc#1271912).
• posix-timers: Consolidate timer setup (bsc#1271912).
• posix-timers: Cure si_sys_private race (bsc#1271912).
• posix-timers: Document common_clock_get() correctly (bsc#1271912).
• posix-timers: Expand timer_arm() callbacks with a boolean return value (bsc#1271912).
• posix-timers: Polish coding style in a few places (bsc#1271912).
• posix-timers: Retrieve interval in common timer_settime() code (bsc#1271912).
• sctp: validate embedded address parameter length (git-fixes).
• time: Switch to hrtimer_setup() (bsc#1271912).