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ALSA-2026:66324 — Important: kernel-rt security, bug fix, and enhancement update

Affected: AlmaLinux:8: kernel-rt, AlmaLinux:8: kernel-rt-core, AlmaLinux:8: kernel-rt-debug, AlmaLinux:8: kernel-rt-debug-core, AlmaLinux:8: kernel-rt-debug-devel, AlmaLinux:8: kernel-rt-debug-modules, AlmaLinux:8: kernel-rt-debug-modules-extra, AlmaLinux:8: kernel-rt-devel, AlmaLinux:8: kernel-rt-modules, AlmaLinux:8: kernel-rt-modules-extra

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

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: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() (CVE-2026-46149) * kernel: netfilter: nf_log: validate MAC header was set before dumping it (CVE-2026-52942) * 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: netfilter: nf_conntrack_sip: don't use simple_strtoul (CVE-2026-52986) * kernel: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing (CVE-2026-53246) * kernel: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done (CVE-2026-63801) * kernel: sctp: fix race between sctp_wait_for_connect and peeloff (CVE-2026-63971) * kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015) * kernel: ixgbevf: fix use-after-free in VEPA multicast source pruning (CVE-2026-64113) * kernel: sctp: fix auth_hmacs array size in struct sctp_cookie (CVE-2026-68376) * 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: sctp: validate stream count i…

bdu:2026-14802

BELL-CVE-2026-68376

Affected: Alpaquita:23: linux-lts, Alpaquita:25: linux-lts, Alpaquita:stream: linux-lts

certfr-2026-avi-1069 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian LTS. Elles permettent à un attaquant de p…

certfr-2026-avi-1069

EUVD-2026-356318

fkie_cve-2026-68376

In the Linux kernel, the following vulnerability has been resolved:

sctp: fix auth_hmacs array size in struct sctp_cookie

The auth_hmacs array in struct sctp_cookie is supposed to store a complete SCTP_AUTH_HMAC_ALGO parameter, which consists of a struct sctp_paramhdr followed by N HMAC identifiers.

However, the array size was calculated using an extra 2 bytes instead of sizeof(struct sctp_paramhdr), which is 4 bytes. When four HMAC identifiers are configured, the HMAC-ALGO parameter stored in the endpoint is larger than the auth_hmacs buffer in the cookie.

As a result, sctp_association_init() copies beyond the end of auth_hmacs when initializing the association, corrupting the adjacent auth_chunks field. This can lead to an invalid HMAC identifier being accepted and later cause an out-of-bounds read in sctp_auth_get_hmac().

Fix the array size calculation by including the full SCTP parameter header size.

GHSA-55hr-9mvf-6m8f

In the Linux kernel, the following vulnerability has been resolved:

sctp: fix auth_hmacs array size in struct sctp_cookie

The auth_hmacs array in struct sctp_cookie is supposed to store a complete SCTP_AUTH_HMAC_ALGO parameter, which consists of a struct sctp_paramhdr followed by N HMAC identifiers.

Fix the array size calculation by including the full SCTP parameter header size.

msrc_CVE-2026-68376 — sctp: fix auth_hmacs array size in struct sctp_cookie

msrc_CVE-2026-68376

RHSA-2026:66324 — Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update

kernel: Linux kernel: Denial of Service in qla2xxx SCSI driver due to improper command handling after chip reset kernel: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() kernel: sctp: diag: reject stale associations in dump_one path kernel: netfilter: nf_log: validate MAC header was set before dumping it kernel: netfilter: nf_conntrack_sip: don't use simple_strtoul kernel: net: pull headers in qdisc_pkt_len_segs_init() kernel: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing kernel: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done kernel: sctp: fix race between sctp_wait_for_connect and peeloff kernel: security/keys: fix missed RCU read section on lookup kernel: ixgbevf: fix use-after-free in VEPA multicast source pruning kernel: tipc: clear sock->sk on the failed-insert path in tipc_sk_create() kernel: sctp: auth: verify auth requirement when auth_chunk is NULL kernel: sctp: validate stream count in sctp_process_strreset_inreq() kernel: sctp: fix auth_hmacs array size in struct sctp_cookie

RHSA-2026:66325 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

RLSA-2026:66324 — Important: kernel-rt security, bug fix, and enhancement update

Affected: Rocky Linux:8: kernel-rt

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

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: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() (CVE-2026-46149)

* kernel: netfilter: nf_log: validate MAC header was set before dumping it (CVE-2026-52942)

* 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: netfilter: nf_conntrack_sip: don't use simple_strtoul (CVE-2026-52986)

* kernel: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing (CVE-2026-53246)

* kernel: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done (CVE-2026-63801)

* kernel: sctp: fix race between sctp_wait_for_connect and peeloff (CVE-2026-63971)

* kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015)

* kernel: ixgbevf: fix use-after-free in VEPA multicast source pruning (CVE-2026-64113)

* kernel: sctp: fix auth_hmacs array size in struct sctp_cookie (CVE-2026-68376)

* 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: sctp: validate stream count in sctp_process_strre…

UBUNTU-CVE-2026-68376

Affected: Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:16.04:LTS: linux, Ubuntu:Pro:16.04:LTS: linux-aws, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe and 246 more

In the Linux kernel, the following vulnerability has been resolved: sctp: fix auth_hmacs array size in struct sctp_cookie The auth_hmacs array in struct sctp_cookie is supposed to store a complete SCTP_AUTH_HMAC_ALGO parameter, which consists of a struct sctp_paramhdr followed by N HMAC identifiers. However, the array size was calculated using an extra 2 bytes instead of sizeof(struct sctp_paramhdr), which is 4 bytes. When four HMAC identifiers are configured, the HMAC-ALGO parameter stored in the endpoint is larger than the auth_hmacs buffer in the cookie. As a result, sctp_association_init() copies beyond the end of auth_hmacs when initializing the association, corrupting the adjacent auth_chunks field. This can lead to an invalid HMAC identifier being accepted and later cause an out-of-bounds read in sctp_auth_get_hmac(). Fix the array size calculation by including the full SCTP parameter header size.

WID-SEC-W-2026-2730 — Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, darunter möglicherweise die Ausführung von beliebigem Code, die Ausweitung von Berechtigungen, die Offenlegung von Informationen, die Manipulation von Daten oder Denial-of-Service-Zustände.