SUSE-SU-2026:4936-1

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SUSE-SU-2026:4936-1

Summary: Security update for the Linux Kernel

Details: The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues: The following security issues were fixed: - CVE-2026-72041: espintcp: use sk_msg_free_partial to fix partial send (bsc#1275510). - CVE-2026-72110: bpf,fork: wipe ->bpf_storage before bailouts that access it (bsc#1277357). - CVE-2026-72301: ASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get (bsc#1277742). - CVE-2026-72493: net: serialize netif_running() check in enqueue_to_backlog() (bsc#1276951). - CVE-2026-74578: crypto: algif_skcipher - force synchronous processing on trees without ctx->state (bsc#1275564). - CVE-2026-74587: sctp: fix use-after-free of cached ASCONF chunk (bsc#1277821). - CVE-2026-74624: netfilter: conntrack: work around exceeded receive window (bsc#1277599). - CVE-2026-80977: net: skbuff: don't touch shared zerocopy state in skb_tx_error() (bsc#1280259). - CVE-2026-89528: svcrdma: Reject Read lists that exceed the page budget (bsc#1280743). - CVE-2026-89542: SUNRPC: harden gss_krb5_unwrap_v2 against short tokens (bsc#1280387). - CVE-2026-89669: nfsd: fix cpntf publish race in nfs4_init_cp_state (bsc#1280251). - CVE-2026-90011: scsi: target: iscsi: Reserve a terminator byte for the login payload (bsc#1281280). - CVE-2026-90088: Bluetooth: RFCOMM: Validate MTU in rfcomm_apply_pn() to prevent infinite loop (bsc#1281397). - CVE-2026-97555: smb: client: fix heap overflow in DACL owner/group rewrite (bsc#1283851). - CVE-2026-97564: smb: client: reject userspace cifs.idmap descriptions (bsc#1283946). - CVE-2026-98015: net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put (bsc#1283963). - CVE-2026-98016: net/mlx5e: Fix use-after-free race in sample_restore_put() (bsc#1283894). - CVE-2026-98041: bpf: Don't predict JMP32 pointer vs zero comparisons (bsc#1284064). - CVE-2026-98130: sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START (bsc#1283835). - CVE-2026-98248: arm64: Use load LSE atomics for the non-return per-CPU atomic operations (bsc#1284518). - CVE-2026-98253: RDMA/ucma: Serialize join and leave on copy_to_user failure (bsc#1284790). - CVE-2026-98260: exec: Cleanup POSIX timers right after de_thread() (bsc#1284408). - CVE-2026-98323: RDMA/siw: Bound fragmented header copies by the remaining length (bsc#1284713). - CVE-2026-98357: IB/isert: wait for deferred control PDU completions before releasing the connection (bsc#1284791). - CVE-2026-98359: RDMA/core: Reject unregistering netdevs in ib_get_eth_speed (bsc#1284746). - CVE-2026-98432: ipv4: free inet_opt and ireq_opt after an RCU grace period (bsc#1285685). - CVE-2026-99999: ipv4: validate checksum_start before completing checksum (bsc#1285684). The following non security issues were fixed: - kernel-binary.spec.in: Emulate kabi.pl error when suse-kabi-tools is used. - netfilter: nfnetlink_queue: unbreak SCTP traffic (bsc#1285684).

References: https://www.suse.com/support/update/announcement/2026/suse-su-20264936-1/, https://bugzilla.suse.com/1275510, https://bugzilla.suse.com/1275564, https://bugzilla.suse.com/1276951, https://bugzilla.suse.com/1277357, https://bugzilla.suse.com/1277599, https://bugzilla.suse.com/1277742, https://bugzilla.suse.com/1277821, https://bugzilla.suse.com/1280251, https://bugzilla.suse.com/1280259, https://bugzilla.suse.com/1280387, https://bugzilla.suse.com/1280743, https://bugzilla.suse.com/1281280, https://bugzilla.suse.com/1281397, https://bugzilla.suse.com/1283835, https://bugzilla.suse.com/1283851, https://bugzilla.suse.com/1283894, https://bugzilla.suse.com/1283946, https://bugzilla.suse.com/1283963, https://bugzilla.suse.com/1284064, https://bugzilla.suse.com/1284408, https://bugzilla.suse.com/1284518, https://bugzilla.suse.com/1284713, https://bugzilla.suse.com/1284746, https://bugzilla.suse.com/1284790, https://bugzilla.suse.com/1284791, https://bugzilla.suse.com/1285684, https://bugzilla.suse.com/1285685, https://www.suse.com/security/cve/CVE-2026-72041, https://www.suse.com/security/cve/CVE-2026-72110, https://www.suse.com/security/cve/CVE-2026-72301, https://www.suse.com/security/cve/CVE-2026-72493, https://www.suse.com/security/cve/CVE-2026-74578, https://www.suse.com/security/cve/CVE-2026-74587, https://www.suse.com/security/cve/CVE-2026-74624, https://www.suse.com/security/cve/CVE-2026-80977, https://www.suse.com/security/cve/CVE-2026-89528, https://www.suse.com/security/cve/CVE-2026-89542, https://www.suse.com/security/cve/CVE-2026-89669, https://www.suse.com/security/cve/CVE-2026-90011, https://www.suse.com/security/cve/CVE-2026-90088, https://www.suse.com/security/cve/CVE-2026-97555, https://www.suse.com/security/cve/CVE-2026-97564, https://www.suse.com/security/cve/CVE-2026-98015, https://www.suse.com/security/cve/CVE-2026-98016, https://www.suse.com/security/cve/CVE-2026-98041, https://www.suse.com/security/cve/CVE-2026-98130, https://www.suse.com/security/cve/CVE-2026-98248, https://www.suse.com/security/cve/CVE-2026-98253, https://www.suse.com/security/cve/CVE-2026-98260, https://www.suse.com/security/cve/CVE-2026-98323, https://www.suse.com/security/cve/CVE-2026-98357, https://www.suse.com/security/cve/CVE-2026-98359, https://www.suse.com/security/cve/CVE-2026-98432, https://www.suse.com/security/cve/CVE-2026-99999