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ALSA-2026:70402 — Important: kernel security, bug fix, and enhancement update

2026-10-02T13:09:53.279574+00:00

Affected: AlmaLinux:8: bpftool, AlmaLinux:8: kernel, AlmaLinux:8: kernel-abi-stablelists, AlmaLinux:8: kernel-core, AlmaLinux:8: kernel-cross-headers, AlmaLinux:8: kernel-debug, AlmaLinux:8: kernel-debug-core, AlmaLinux:8: kernel-debug-devel, AlmaLinux:8: kernel-debug-modules, AlmaLinux:8: kernel-debug-modules-extra and 15 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: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread (CVE-2023-54120) * kernel: Bluetooth: L2CAP: Fix potential user-after-free (CVE-2023-54214) * kernel: Bluetooth: btusb: revert use of devm_kzalloc in btusb (CVE-2025-71082) * kernel: Bluetooth: SMP: force responder MITM requirements before building the pairing response (CVE-2026-43334) * kernel: iommu/vt-d: Clear Present bit before tearing down PASID entry (CVE-2026-45894) * kernel: RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv (CVE-2026-46043) * kernel: RDMA/rxe: Reject unknown opcodes before ICRC processing (CVE-2026-46133) * kernel: Bluetooth: serialize accept_q access (CVE-2026-52918) * kernel: dm cache policy smq: fix missing locks in invalidating cache blocks (CVE-2026-53062) * kernel: iommu/amd: Fix clone_alias() to use the original device's devid (CVE-2026-53053) * kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() (CVE-2026-53256) * kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers (CVE-2026-53254) * kernel: keys: Pin request_key_auth payload in instantiate paths (CVE-2026-63823) * kernel: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp (CVE-2026-63975) * kernel: Bluetooth: HIDP: fi…

bdu:2025-16058

2026-10-02T13:09:53.279723+00:00

bdu:2025-16058

BELL-CVE-2025-39964

2026-10-02T13:09:53.279743+00:00

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

certfr-2025-avi-0899 — De multiples vulnérabilités ont été découvertes dans les produits Microsoft. Certaines d'entre elles permettent à un at…

2026-10-02T13:09:53.279767+00:00

certfr-2025-avi-0899

EUVD-2026-372455

2026-10-02T13:09:53.279784+00:00

EUVD-2026-372455

fkie_cve-2025-39964

2026-10-02T13:09:53.279795+00:00

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

crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg

Issuing two writes to the same af_alg socket is bogus as the data will be interleaved in an unpredictable fashion. Furthermore, concurrent writes may create inconsistencies in the internal socket state.

Disallow this by adding a new ctx->write field that indiciates exclusive ownership for writing.

GHSA-wr5g-mfhw-rpfj

2026-10-02T13:09:53.279821+00:00

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

crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg

Disallow this by adding a new ctx->write field that indiciates exclusive ownership for writing.

ICSA-26-209-04 — Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

2026-10-02T13:09:53.279839+00:00

Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.6 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant).

Siemens is preparing fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

msrc_CVE-2025-39964 — crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg

2026-10-02T13:09:53.280059+00:00

msrc_CVE-2025-39964

OESA-2025-2765 — kernel security update

2026-10-02T13:09:53.280076+00:00

Affected: openEuler:24.03-LTS: kernel

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

A transient execution vulnerability in some AMD processors may allow an attacker to infer data in the L1D cache, potentially resulting in the leakage of sensitive information across privileged boundaries.(CVE-2024-36357)

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

fs/ntfs3: Prevent integer overflow in hdr_first_de()

The "de_off" and "used" variables come from the disk so they both need to check. The problem is that on 32bit systems if they're both greater than UINT_MAX - 16 then the check does work as intended because of an integer overflow.(CVE-2025-22080)

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

ext4: fix off-by-one error in do_split

Syzkaller detected a use-after-free issue in ext4_insert_dentry that was caused by out-of-bounds access due to incorrect splitting in do_split.

BUG: KASAN: use-after-free in ext4_insert_dentry+0x36a/0x6d0 fs/ext4/namei.c:2109 Write of size 251 at addr ffff888074572f14 by task syz-executor335/5847

CPU: 0 UID: 0 PID: 5847 Comm: syz-executor335 Not tainted 6.12.0-rc6-syzkaller-00318-ga9cda7c0ffed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/k…

openSUSE-SU-2026:20416-1 — Security update for the Linux Kernel

2026-10-02T13:09:53.280382+00:00

Security update for the Linux Kernel

RHSA-2026:70402 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

2026-10-02T13:09:53.280492+00:00

kernel: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread kernel: Bluetooth: L2CAP: Fix potential user-after-free kernel: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg kernel: Bluetooth: btusb: revert use of devm_kzalloc in btusb kernel: Bluetooth: SMP: force responder MITM requirements before building the pairing response kernel: iommu/vt-d: Clear Present bit before tearing down PASID entry kernel: RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv kernel: RDMA/rxe: Reject unknown opcodes before ICRC processing kernel: Bluetooth: serialize accept_q access kernel: iommu/amd: Fix clone_alias() to use the original device's devid kernel: dm cache policy smq: fix missing locks in invalidating cache blocks kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() kernel: keys: Pin request_key_auth payload in instantiate paths kernel: Bluetooth: HIDP: fix missing length checks in hidp_input_report() kernel: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp kernel: nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path kernel: RDMA/rxe: Fix a use-after-free problem in rxe_mmap 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

RLSA-2026:70402 — Important: kernel security, bug fix, and enhancement update

2026-10-02T13:09:53.280544+00:00

Affected: Rocky Linux:8: 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: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread (CVE-2023-54120)

* kernel: Bluetooth: L2CAP: Fix potential user-after-free (CVE-2023-54214)

* kernel: Bluetooth: btusb: revert use of devm_kzalloc in btusb (CVE-2025-71082)

* kernel: Bluetooth: SMP: force responder MITM requirements before building the pairing response (CVE-2026-43334)

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

* kernel: RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv (CVE-2026-46043)

* kernel: RDMA/rxe: Reject unknown opcodes before ICRC processing (CVE-2026-46133)

* kernel: Bluetooth: serialize accept_q access (CVE-2026-52918)

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

* kernel: iommu/amd: Fix clone_alias() to use the original device's devid (CVE-2026-53053)

* kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() (CVE-2026-53256)

* kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers (CVE-2026-53254)

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

* kernel: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp (CVE-2026-63975)

* kernel: Bluetooth: HIDP: fix missing length chec…

SSA-019113 — SSA-019113: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.6

2026-10-02T13:09:53.280595+00:00

Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.6 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant).

Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

SUSE-SU-2026:0962-1 — Security update for the Linux Kernel

2026-10-02T13:09:53.280847+00:00

Security update for the Linux Kernel

UBUNTU-CVE-2025-39964

2026-10-02T13:09:53.280948+00:00

Affected: Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:16.04:LTS: linux, Ubuntu:Pro:16.04:LTS: linux-aws, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe and 213 more

In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg Issuing two writes to the same af_alg socket is bogus as the data will be interleaved in an unpredictable fashion. Furthermore, concurrent writes may create inconsistencies in the internal socket state. Disallow this by adding a new ctx->write field that indiciates exclusive ownership for writing.

WID-SEC-W-2025-2268 — Linux Kernel: Mehrere Schwachstellen

2026-10-02T13:09:53.281188+00:00

Ein lokaler Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um Daten zu manipulieren oder einen Denial of Service herbeizuführen.