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ALSA-2026:70459 — 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-devel, AlmaLinux:9: kernel-64k-debug-devel-matched, AlmaLinux:9: kernel-64k-debug-modules, AlmaLinux:9: kernel-64k-debug-modules-core, AlmaLinux:9: kernel-64k-debug-modules-extra and 64 more

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

Security Fix(es):

* kernel: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg (CVE-2025-39964) * kernel: iommu/vt-d: Clear Present bit before tearing down PASID entry (CVE-2026-45894) * kernel: crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree (CVE-2026-45959) * kernel: dm cache policy smq: fix missing locks in invalidating cache blocks (CVE-2026-53062) * kernel: keys: Pin request_key_auth payload in instantiate paths (CVE-2026-63823) * kernel: net/mlx5: Fix MCIA register buffer overflow on 32 dword reads (CVE-2026-68293) * kernel: Linux kernel: libceph null pointer dereference leads to denial of service (CVE-2026-68157) * kernel: Linux kernel Bluetooth RFCOMM: Denial of Service via use-after-free in set_termios (CVE-2026-68188) * kernel: libceph: refresh auth->authorizer_buf{,_len} after authorizer update (CVE-2026-68156) * kernel: Linux kernel (libceph): Denial of Service due to malformed monitor maps (CVE-2026-68155) * kernel: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds (CVE-2026-68391) * kernel: net/mlx5e: macsec: fix use-after-free of metadata_dst on RX SC delete (CVE-2026-72072) * kernel: mm/hugetlb: fix list corruption in allocate_file_region_entries() (CVE-2026-74518)

Bug Fix(es) and Enhancement(s):

* [Intel 9.8 FEAT] ice: Driver Update [almalinux-9.8.z] (JIRA:AlmaLinux-213003) * AlmaLinux 9.8…

BELL-CVE-2026-45959

Affected: Alpaquita:stream: linux-lts

certfr-2026-avi-1230 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Red Hat. Certaines d'entre elles permettent à un…

certfr-2026-avi-1230

EUVD-2026-347972

fkie_cve-2026-45959

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

crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree

Annotating a local pointer variable, which will be assigned with the kmalloc-family functions, with the `__cleanup(kfree)` attribute will make the address of the local variable, rather than the address returned by kmalloc, passed to kfree directly and lead to a crash due to invalid deallocation of stack address. According to other places in the repo, the correct usage should be `__free(kfree)`. The code coincidentally compiled because the parameter type `void *` of kfree is compatible with the desired type `struct { ... } **`.

GHSA-6j4x-6364-q9p3

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

crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree

RHSA-2026:70459 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

kernel: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg kernel: iommu/vt-d: Clear Present bit before tearing down PASID entry kernel: crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree kernel: dm cache policy smq: fix missing locks in invalidating cache blocks kernel: keys: Pin request_key_auth payload in instantiate paths kernel: Linux kernel (libceph): Denial of Service due to malformed monitor maps kernel: libceph: refresh auth->authorizer_buf{,_len} after authorizer update kernel: Linux kernel: libceph null pointer dereference leads to denial of service kernel: Linux kernel Bluetooth RFCOMM: Denial of Service via use-after-free in set_termios kernel: net/mlx5: Fix MCIA register buffer overflow on 32 dword reads kernel: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds kernel: net/mlx5e: macsec: fix use-after-free of metadata_dst on RX SC delete kernel: mm/hugetlb: fix list corruption in allocate_file_region_entries()

RHSA-2026:70498 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

kernel: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg kernel: iommu/vt-d: Clear Present bit before tearing down PASID entry kernel: crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree kernel: dm cache policy smq: fix missing locks in invalidating cache blocks kernel: keys: Pin request_key_auth payload in instantiate paths kernel: nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path kernel: Linux kernel (libceph): Denial of Service due to malformed monitor maps kernel: Linux kernel: libceph stack out-of-bounds write via crafted OSDMap kernel: Linux kernel Bluetooth RFCOMM: Denial of Service via use-after-free in set_termios kernel: net/mlx5: Fix MCIA register buffer overflow on 32 dword reads kernel: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds kernel: mm/hugetlb: fix list corruption in allocate_file_region_entries()

RLSA-2026:70459 — 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: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg (CVE-2025-39964)

* kernel: iommu/vt-d: Clear Present bit before tearing down PASID entry (CVE-2026-45894)

* kernel: crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree (CVE-2026-45959)

* kernel: dm cache policy smq: fix missing locks in invalidating cache blocks (CVE-2026-53062)

* kernel: keys: Pin request_key_auth payload in instantiate paths (CVE-2026-63823)

* kernel: net/mlx5: Fix MCIA register buffer overflow on 32 dword reads (CVE-2026-68293)

* kernel: Linux kernel: libceph null pointer dereference leads to denial of service (CVE-2026-68157)

* kernel: Linux kernel Bluetooth RFCOMM: Denial of Service via use-after-free in set_termios (CVE-2026-68188)

* kernel: libceph: refresh auth->authorizer_buf{,_len} after authorizer update (CVE-2026-68156)

* kernel: Linux kernel (libceph): Denial of Service due to malformed monitor maps (CVE-2026-68155)

* kernel: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds (CVE-2026-68391)

* kernel: net/mlx5e: macsec: fix use-after-free of metadata_dst on RX SC delete (CVE-2026-72072)

* kernel: mm/hugetlb: fix list corruption in allocate_file_region_entries() (CVE-2026-74518)

Bug Fix(es) and Enhancement(s):

* [Intel 9.8 FEAT] ice: Driver Update [rhel-9.8.z] (JIRA:Rocky Linux-213003)

* Rocky Linux 9.8: Multiuser Kerberized DF…

UBUNTU-CVE-2026-45959

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 103 more

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree Annotating a local pointer variable, which will be assigned with the kmalloc-family functions, with the `__cleanup(kfree)` attribute will make the address of the local variable, rather than the address returned by kmalloc, passed to kfree directly and lead to a crash due to invalid deallocation of stack address. According to other places in the repo, the correct usage should be `__free(kfree)`. The code coincidentally compiled because the parameter type `void *` of kfree is compatible with the desired type `struct { ... } **`.

WID-SEC-W-2026-1700 — Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder andere nicht näher spezifizierte Auswirkungen zu erzielen.