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ALSA-2026:57252 — 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: netfilter: nf_conntrack_h323: fix OOB read in decode_choice() (CVE-2026-43233) * kernel: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() (CVE-2026-43206) * kernel: drm/amdgpu: Refactor amdgpu_gem_va_ioctl for Handling Last Fence Update and Timeline Management v4 (CVE-2026-43237) * kernel: udf: fix partition descriptor append bookkeeping (CVE-2026-45991) * kernel: drm/amdkfd: Fix watch_id bounds checking in debug address watch v2 (CVE-2026-45878) * kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() (CVE-2026-46120) * kernel: sched/psi: fix race between file release and pressure write (CVE-2026-52991) * kernel: drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11 (CVE-2026-53143) * kernel: drm/amd/display: Clamp VBIOS HDMI retimer register count to array size (CVE-2026-53136) * kernel: mm/huge_memory: update file PMD counter before folio_put() (CVE-2026-53189) * kernel: drm/amd/display: Use krealloc_array() in dal_vector_reserve() (CVE-2026-53329) * kernel: drm/i915/gem: Fix phys BO pread/pwrite with offset (CVE-2026-53356) * kernel: drm/amdgpu: zero-initialize GART table on allocation (CVE-2026-53374) * kernel: drm/i915: Fix potential UAF in TTM object purge (CVE-2026-63884) * kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable (CVE-2026-64007) * kernel: memfd: deny…

BELL-CVE-2026-53189

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

certfr-2026-avi-0862 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian LTS. Certaines d'entre elles permettent à…

certfr-2026-avi-0862

EUVD-2026-348187

fkie_cve-2026-53189

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

mm/huge_memory: update file PMD counter before folio_put()

__split_huge_pmd_locked() updates the file/shmem RSS counter after dropping the PMD mapping's folio reference. If folio_put() drops the last reference, mm_counter_file() can later read freed folio state via folio_test_swapbacked().

Move the counter update before folio_put().

GHSA-g27r-592c-r436

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

mm/huge_memory: update file PMD counter before folio_put()

Move the counter update before folio_put().

openSUSE-SU-2026:21555-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

RHSA-2026:57254 — Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update

kernel: net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() kernel: sched/psi: fix race between file release and pressure write kernel: mm/huge_memory: update file PMD counter before folio_put() kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() kernel: net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot kernel: smb: client: mask server-provided mode to 07777 in modefromsid kernel: smb/client: handle overlapping allocated ranges in fallocate

RLSA-2026:57252 — 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: netfilter: nf_conntrack_h323: fix OOB read in decode_choice() (CVE-2026-43233)

* kernel: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() (CVE-2026-43206)

* kernel: drm/amdgpu: Refactor amdgpu_gem_va_ioctl for Handling Last Fence Update and Timeline Management v4 (CVE-2026-43237)

* kernel: udf: fix partition descriptor append bookkeeping (CVE-2026-45991)

* kernel: drm/amdkfd: Fix watch_id bounds checking in debug address watch v2 (CVE-2026-45878)

* kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() (CVE-2026-46120)

* kernel: sched/psi: fix race between file release and pressure write (CVE-2026-52991)

* kernel: drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11 (CVE-2026-53143)

* kernel: drm/amd/display: Clamp VBIOS HDMI retimer register count to array size (CVE-2026-53136)

* kernel: mm/huge_memory: update file PMD counter before folio_put() (CVE-2026-53189)

* kernel: drm/amd/display: Use krealloc_array() in dal_vector_reserve() (CVE-2026-53329)

* kernel: drm/i915/gem: Fix phys BO pread/pwrite with offset (CVE-2026-53356)

* kernel: drm/amdgpu: zero-initialize GART table on allocation (CVE-2026-53374)

* kernel: drm/i915: Fix potential UAF in TTM object purge (CVE-2026-63884)

* kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable (CVE-2026-64007)

* kernel: memfd: deny writeable mappings wh…

SUSE-SU-2026:23066-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2026-53189

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:Pro:18.04:LTS: linux-aws-5.4, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:Pro:18.04:LTS: linux-azure-5.4, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3 and 228 more

In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: update file PMD counter before folio_put() __split_huge_pmd_locked() updates the file/shmem RSS counter after dropping the PMD mapping's folio reference. If folio_put() drops the last reference, mm_counter_file() can later read freed folio state via folio_test_swapbacked(). Move the counter update before folio_put().

WID-SEC-W-2026-2077 — Linux Kernel: Mehrere Schwachstellen

Ein entfernter Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um Sicherheitsvorkehrungen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen und weitere, nicht näher spezifizierte Auswirkungen zu erzielen.