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ALSA-2025:22854 — Moderate: kernel security update

Affected: AlmaLinux:10: kernel-abi-stablelists, AlmaLinux:10: kernel-doc

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

Security Fix(es):

* kernel: cifs: Fix oops due to uninitialised variable (CVE-2025-38737) * kernel: can: j1939: implement NETDEV_UNREGISTER notification handler (CVE-2025-39925) * kernel: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync (CVE-2025-39982) * kernel: Bluetooth: MGMT: Fix possible UAFs (CVE-2025-39981) * kernel: net/mlx5: fs, fix UAF in flow counter release (CVE-2025-39979) * kernel: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue (CVE-2025-39983) * kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() (CVE-2025-40047) * kernel: iommu/vt-d: Disallow dirty tracking if incoherent page walk (CVE-2025-40058) * kernel: ice: ice_adapter: release xa entry on adapter allocation failure (CVE-2025-40185)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2025-15191

BELL-CVE-2025-38737

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

certfr-2025-avi-0825 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian. Elles permettent à un attaquant de provo…

certfr-2025-avi-0825

EUVD-2026-347169

fkie_cve-2025-38737

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

cifs: Fix oops due to uninitialised variable

Fix smb3_init_transform_rq() to initialise buffer to NULL before calling netfs_alloc_folioq_buffer() as netfs assumes it can append to the buffer it is given. Setting it to NULL means it should start a fresh buffer, but the value is currently undefined.

GHSA-86v2-3hvm-7hww

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

cifs: Fix oops due to uninitialised variable

RHSA-2025:22854 — Red Hat Security Advisory: kernel security update

kernel: cifs: Fix oops due to uninitialised variable kernel: can: j1939: implement NETDEV_UNREGISTER notification handler kernel: net/mlx5: fs, fix UAF in flow counter release kernel: Bluetooth: MGMT: Fix possible UAFs kernel: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync kernel: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() kernel: iommu/vt-d: Disallow dirty tracking if incoherent page walk kernel: ice: ice_adapter: release xa entry on adapter allocation failure

RHSA-2025:23009 — Red Hat Security Advisory: kernel security update

kernel: cifs: Fix oops due to uninitialised variable

UBUNTU-CVE-2025-38737

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 88 more

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix oops due to uninitialised variable Fix smb3_init_transform_rq() to initialise buffer to NULL before calling netfs_alloc_folioq_buffer() as netfs assumes it can append to the buffer it is given. Setting it to NULL means it should start a fresh buffer, but the value is currently undefined.

WID-SEC-W-2025-1988 — Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

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