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ALSA-2026:71232 — Important: kernel security, bug fix, and enhancement update

Affected: AlmaLinux:9: kernel, AlmaLinux:9: kernel-64k, AlmaLinux:9: kernel-64k-core, AlmaLinux:9: kernel-64k-debug, AlmaLinux:9: kernel-64k-debug-core, AlmaLinux:9: kernel-64k-debug-modules, AlmaLinux:9: kernel-64k-debug-modules-core, AlmaLinux:9: kernel-64k-debug-modules-extra, AlmaLinux:9: kernel-64k-modules, AlmaLinux:9: kernel-64k-modules-core and 7 more

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: block: zero non-PI portion of auto integrity buffer (CVE-2026-23007) * kernel: af_unix: Drop all SCM attributes for SOCKMAP (CVE-2026-53005) * kernel: mac802154: llsec: add skb_cow_data() before in-place crypto (CVE-2026-63831) * kernel: blk-cgroup: fix UAF in __blkcg_rstat_flush() (CVE-2026-63802) * kernel: block: don't overwrite bip_vcnt in bio_integrity_copy_user() (CVE-2026-64053) * kernel: smb: client: fix double-free in SMB2_flush() replay (CVE-2026-64383) * kernel: nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path (CVE-2026-64534) * kernel: sctp: don't free the ASCONF's own transport in DEL-IP processing (CVE-2026-64564) * kernel: ALSA: timer: drain a slave's callback before its master detaches it (CVE-2026-68201) * kernel: ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control (CVE-2026-72261) * kernel: xfrm: ah6: validate routing header segments_left (CVE-2026-80844) * kernel: net: tun: bound receive headroom (CVE-2026-81000) * kernel: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read (CVE-2026-89846)

Bug Fix(es) and Enhancement(s):

* sctp: prevent peer transport count overflow [almalinux-9.8.z] (JIRA:AlmaLinux-216251) * netfilter: nftables CVE and memory safety backports for 9.8 (JIRA:AlmaLinux-236634)

For more details about the security issue(s), including the imp…

BELL-CVE-2026-64383

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

certfr-2026-avi-1031 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian LTS. Certaines d'entre elles permettent à…

certfr-2026-avi-1031

fkie_cve-2026-64383

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

smb: client: fix double-free in SMB2_flush() replay

SMB2_flush() keeps its response buffer bookkeeping across replay attempts. If a replayable flush response is received and the retry then fails before cifs_send_recv() stores a replacement response, flush_exit will free the stale response pointer a second time.

Reinitialize resp_buftype and rsp_iov at the top of the replay loop so cleanup only acts on response state produced by the current attempt. This fixes a double-free without changing replay handling for successful requests.

GHSA-j3g4-c7cw-5ch7

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

smb: client: fix double-free in SMB2_flush() replay

msrc_CVE-2026-64383 — smb: client: fix double-free in SMB2_flush() replay

msrc_CVE-2026-64383

OESA-2026-3704 — kernel security update

Affected: openEuler:24.03-LTS-SP3: kernel

The Linux Kernel, the operating system core itself. Security Fix(es):

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

net: hns3: add VLAN id validation before using

Currently, the VLAN id may be used without validation when receive a VLAN configuration mailbox from VF. The length of vlan_del_fail_bmap is BITS_TO_LONGS(VLAN_N_VID). It may cause out-of-bounds memory access once the VLAN id is bigger than or equal to VLAN_N_VID.

Therefore, VLAN id needs to be checked to ensure it is within the range of VLAN_N_VID.(CVE-2025-71112)

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

ext4: fix string copying in parse_apply_sb_mount_options()

strscpy_pad() can't be used to copy a non-NUL-term string into a NUL-term string of possibly bigger size. Commit 0efc5990bca5 ("string.h: Introduce memtostr() and memtostr_pad()") provides additional information in that regard. So if this happens, the following warning is observed:

strnlen: detected buffer overflow: 65 byte read of buffer size 64 WARNING: CPU: 0 PID: 28655 at lib/string_helpers.c:1032 __fortify_report+0x96/0xc0 lib/string_helpers.c:1032 Modules linked in: CPU: 0 UID: 0 PID: 28655 Comm: syz-executor.3 Not tainted 6.12.54-syzkaller-00144-g5f0270f1ba00 #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__fortify_report+0x96/0xc0 lib/string_helpers.c:1032 Call Trace: <TASK> __fortify_panic+0x1f/0x30 lib/s…

openSUSE-SU-2026:11476-1 — kernel-devel-7.1.7-1.1 on GA media

kernel-devel-7.1.7-1.1 on GA media

RHSA-2026:71233 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

kernel: block: zero non-PI portion of auto integrity buffer kernel: netfilter: ebtables SNAT target writes to shared memory pages during ARP hardware address rewrite kernel: blk-cgroup: fix UAF in __blkcg_rstat_flush() kernel: mac802154: llsec: add skb_cow_data() before in-place crypto kernel: block: don't overwrite bip_vcnt in bio_integrity_copy_user() kernel: smb: client: fix double-free in SMB2_flush() replay kernel: sctp: don't free the ASCONF's own transport in DEL-IP processing kernel: ALSA: timer: drain a slave's callback before its master detaches it kernel: selinux: check connect-related permissions on TCP Fast Open kernel: netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp() kernel: xfrm: ah6: validate routing header segments_left kernel: net: tun: bound receive headroom kernel: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read

RLSA-2026:71232 — Important: kernel security, bug fix, and enhancement update

Affected: Rocky Linux:9: kernel

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: block: zero non-PI portion of auto integrity buffer (CVE-2026-23007)

* kernel: af_unix: Drop all SCM attributes for SOCKMAP (CVE-2026-53005)

* kernel: mac802154: llsec: add skb_cow_data() before in-place crypto (CVE-2026-63831)

* kernel: blk-cgroup: fix UAF in __blkcg_rstat_flush() (CVE-2026-63802)

* kernel: block: don't overwrite bip_vcnt in bio_integrity_copy_user() (CVE-2026-64053)

* kernel: smb: client: fix double-free in SMB2_flush() replay (CVE-2026-64383)

* kernel: nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path (CVE-2026-64534)

* kernel: sctp: don't free the ASCONF's own transport in DEL-IP processing (CVE-2026-64564)

* kernel: ALSA: timer: drain a slave's callback before its master detaches it (CVE-2026-68201)

* kernel: ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control (CVE-2026-72261)

* kernel: xfrm: ah6: validate routing header segments_left (CVE-2026-80844)

* kernel: net: tun: bound receive headroom (CVE-2026-81000)

* kernel: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read (CVE-2026-89846)

Bug Fix(es) and Enhancement(s):

* sctp: prevent peer transport count overflow [rhel-9.8.z] (JIRA:Rocky Linux-216251)

* netfilter: nftables CVE and memory safety backports for 9.8 (JIRA:Rocky Linux-236634)

For more details about the security issue(s), including the impact, a CVSS score, acknowl…

SUSE-SU-2026:23477-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2026-64383

Affected: Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux-aws-5.0, Ubuntu:18.04:LTS: linux-aws-5.3, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3, Ubuntu:18.04:LTS: linux-gke-4.15, Ubuntu:18.04:LTS: linux-gke-5.4 and 154 more

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_flush() replay SMB2_flush() keeps its response buffer bookkeeping across replay attempts. If a replayable flush response is received and the retry then fails before cifs_send_recv() stores a replacement response, flush_exit will free the stale response pointer a second time. Reinitialize resp_buftype and rsp_iov at the top of the replay loop so cleanup only acts on response state produced by the current attempt. This fixes a double-free without changing replay handling for successful requests.

WID-SEC-W-2026-2527 — Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um nicht näher spezifizierte Angriffe durchzuführen, dazu können DoS-Angriffe, die Offenlegung von Informationen, die Beschädigung des Speichers oder die Umgehung von Sicherheitsmaßnahmen gehören.