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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…

bdu:2026-14345

BELL-CVE-2026-64053

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

certfr-2026-avi-0926 — De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Certaines d'entre elles permettent à un a…

certfr-2026-avi-0926

EUVD-2026-348377

fkie_cve-2026-64053

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

block: don't overwrite bip_vcnt in bio_integrity_copy_user()

bio_integrity_add_page() already sets bip_vcnt to 1 for the bounce segment. Overwriting it with nr_vecs breaks bip_vcnt <= bip_max_vcnt on WRITE (bip_max_vcnt is 1), so the gap-merge checks in block/blk.h read past the bip_vec[] flex array. On READ the read is in bounds but lands on a saved user bvec instead of the bounce.

The line was added for split propagation, but bio_integrity_clone() doesn't copy bip_vcnt and BIP_CLONE_FLAGS excludes BIP_COPY_USER.

GHSA-xhqx-5f69-qrg5

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

block: don't overwrite bip_vcnt in bio_integrity_copy_user()

The line was added for split propagation, but bio_integrity_clone() doesn't copy bip_vcnt and BIP_CLONE_FLAGS excludes BIP_COPY_USER.

openSUSE-SU-2026:21910-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

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-2026:23881-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2026-64053

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 118 more

In the Linux kernel, the following vulnerability has been resolved: block: don't overwrite bip_vcnt in bio_integrity_copy_user() bio_integrity_add_page() already sets bip_vcnt to 1 for the bounce segment. Overwriting it with nr_vecs breaks bip_vcnt <= bip_max_vcnt on WRITE (bip_max_vcnt is 1), so the gap-merge checks in block/blk.h read past the bip_vec[] flex array. On READ the read is in bounds but lands on a saved user bvec instead of the bounce. The line was added for split propagation, but bio_integrity_clone() doesn't copy bip_vcnt and BIP_CLONE_FLAGS excludes BIP_COPY_USER.

WID-SEC-W-2026-2403 — Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, möglicherweise Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen oder vertrauliche Informationen offenzulegen.