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ALSA-2026:71700 — 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: fbcon: Set fb_display[i]->mode to NULL when the mode is released (CVE-2025-40323) * kernel: smb: smbdirect: introduce smbdirect_socket.recv_io.credits.available (CVE-2026-31539) * kernel: drm/amdgpu/vcn3: Prevent OOB reads when parsing dec msg (CVE-2026-46230) * kernel: drm/amdgpu/vcn4: Prevent OOB reads when parsing IB (CVE-2026-46204) * kernel: drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg (CVE-2026-46199) * kernel: drm/amdgpu/userq: fix access to stale wptr mapping (CVE-2026-46311) * kernel: netfilter: nf_queue: hold bridge skb->dev while queued (CVE-2026-52912) * kernel: accel/ivpu: Add buffer overflow check in MS get_info_ioctl (CVE-2026-53203) * kernel: drm/xe/eustall: Fix drm_dev_put called before stream disable in close (CVE-2026-53290) * kernel: drm/virtio: use uninterruptible resv lock for plane updates (CVE-2026-64098) * kernel: Linux kernel: PPPoE memory corruption via stale pointer (CVE-2026-68121) * kernel: drm/amdgpu/vce: fix integer overflow in image size (CVE-2026-68108) * kernel: drm/amdkfd: fix 32-bit overflow in CWSR total size calculation (CVE-2026-68257) * kernel: drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists (CVE-2026-68267) * kernel: drm/xe: Hold a dma-buf reference for imported BOs (CVE-2026-68266) * kernel: drm/amdgpu: Fix context pstate override handling (CVE-2026-68273) *…

bdu:2026-05108

BELL-CVE-2025-40323

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

certfr-2025-avi-1082 — De multiples vulnérabilités ont été découvertes dans les produits Microsoft. Elles permettent à un attaquant de provoqu…

certfr-2025-avi-1082

EUVD-2026-347427

fkie_cve-2025-40323

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

fbcon: Set fb_display[i]->mode to NULL when the mode is released

Recently, we discovered the following issue through syzkaller:

BUG: KASAN: slab-use-after-free in fb_mode_is_equal+0x285/0x2f0 Read of size 4 at addr ff11000001b3c69c by task syz.xxx ... Call Trace: <TASK> dump_stack_lvl+0xab/0xe0 print_address_description.constprop.0+0x2c/0x390 print_report+0xb9/0x280 kasan_report+0xb8/0xf0 fb_mode_is_equal+0x285/0x2f0 fbcon_mode_deleted+0x129/0x180 fb_set_var+0xe7f/0x11d0 do_fb_ioctl+0x6a0/0x750 fb_ioctl+0xe0/0x140 __x64_sys_ioctl+0x193/0x210 do_syscall_64+0x5f/0x9c0 entry_SYSCALL_64_after_hwframe+0x76/0x7e

Based on experimentation and analysis, during framebuffer unregistration, only the memory of fb_info->modelist is freed, without setting the corresponding fb_display[i]->mode to NULL for the freed modes. This leads to UAF issues during subsequent accesses. Here's an example of reproduction steps: 1. With /dev/fb0 already registered in the system, load a kernel module to register a new device /dev/fb1; 2. Set fb1's mode to the global fb_display[] array (via FBIOPUT_CON2FBMAP); 3. Switch console from fb to VGA (to allow normal rmmod of the ko); 4. Unload the kernel module, at this point fb1's modelist is freed, leaving a wild pointer in fb_display[]; 5. Trigger the bug via system calls through fb0 attempting to delete a mode from fb0.

Add a check in do_unregister_framebuffer(): if…

GHSA-vv6w-x7vv-rv35

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

fbcon: Set fb_display[i]->mode to NULL when the mode is released

Recently, we discovered the following issue through syzkaller:

Add a check in do_unregister_framebuffer(): if…

msrc_CVE-2025-40323 — fbcon: Set fb_display[i]->mode to NULL when the mode is released

msrc_CVE-2025-40323

OESA-2026-1566 — kernel security update

Affected: openEuler:24.03-LTS-SP1: kernel

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

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

udp: Deal with race between UDP socket address change and rehash

If a UDP socket changes its local address while it's receiving datagrams, as a result of connect(), there is a period during which a lookup operation might fail to find it, after the address is changed but before the secondary hash (port and address) and the four-tuple hash (local and remote ports and addresses) are updated.

Secondary hash chains were introduced by commit 30fff9231fad ("udp: bind() optimisation") and, as a result, a rehash operation became needed to make a bound socket reachable again after a connect().

This operation was introduced by commit 719f835853a9 ("udp: add rehash on connect()") which isn't however a complete fix: the socket will be found once the rehashing completes, but not while it's pending.

This is noticeable with a socat(1) server in UDP4-LISTEN mode, and a client sending datagrams to it. After the server receives the first datagram (cf. _xioopen_ipdgram_listen()), it issues a connect() to the address of the sender, in order to set up a directed flow.

Now, if the client, running on a different CPU thread, happens to send a (subsequent) datagram while the server's socket changes its address, but is not rehashed yet, this will result in a failed lookup and a port unreachable error delivered to the…

openSUSE-SU-2026:20145-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

RHSA-2026:71602 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

kernel: fbcon: Set fb_display[i]->mode to NULL when the mode is released kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() kernel: libceph: make decode_pool() more resilient against corrupted osdmaps kernel: libceph: prevent potential out-of-bounds reads in handle_auth_done() kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state kernel: drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg kernel: drm/amdgpu/vcn4: Prevent OOB reads when parsing IB kernel: drm/amdgpu/vcn3: Prevent OOB reads when parsing dec msg kernel: drm/amdgpu/userq: fix access to stale wptr mapping kernel: af_unix: Drop all SCM attributes for SOCKMAP kernel: accel/ivpu: Add buffer overflow check in MS get_info_ioctl kernel: drm/xe/eustall: Fix drm_dev_put called before stream disable in close kernel: drm/virtio: use uninterruptible resv lock for plane updates kernel: drm/amdgpu/vce: fix integer overflow in image size kernel: pppoe: reload header pointer after dev_hard_header() kernel: drm/amdkfd: fix 32-bit overflow in CWSR total size calculation kernel: drm/xe: Hold a dma-buf reference for imported BOs kernel: drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists kernel: drm/amdgpu: Fix context pstate override handling kernel: ipvs: do not propagate one-packet flag to synced conns kernel: nvme-tcp: fix host memory disclosure on R2T for a read command

RLSA-2026:71602 — Important: kernel security, bug fix, and enhancement update

Affected: Rocky Linux:10: kernel

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

Security Fix(es):

* kernel: fbcon: Set fb_display[i]->mode to NULL when the mode is released (CVE-2025-40323)

* kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285)

* kernel: libceph: make decode_pool() more resilient against corrupted osdmaps (CVE-2025-71116)

* kernel: libceph: prevent potential out-of-bounds reads in handle_auth_done() (CVE-2026-22984)

* kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (CVE-2026-22990)

* kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state (CVE-2026-23136)

* kernel: drm/amdgpu/vcn3: Prevent OOB reads when parsing dec msg (CVE-2026-46230)

* kernel: drm/amdgpu/vcn4: Prevent OOB reads when parsing IB (CVE-2026-46204)

* kernel: drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg (CVE-2026-46199)

* kernel: drm/amdgpu/userq: fix access to stale wptr mapping (CVE-2026-46311)

* kernel: af_unix: Drop all SCM attributes for SOCKMAP (CVE-2026-53005)

* kernel: accel/ivpu: Add buffer overflow check in MS get_info_ioctl (CVE-2026-53203)

* kernel: drm/xe/eustall: Fix drm_dev_put called before stream disable in close (CVE-2026-53290)

* kernel: drm/virtio: use uninterruptible resv lock for plane updates (CVE-2026-64098)

* kernel: Linux kernel: PPPoE memory corruption via stale pointer (CVE-2026-68121)

* kernel: drm/amdgpu/vce: fix integer overflow in…

SUSE-SU-2026:0278-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2025-40323

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 229 more

In the Linux kernel, the following vulnerability has been resolved: fbcon: Set fb_display[i]->mode to NULL when the mode is released Recently, we discovered the following issue through syzkaller: BUG: KASAN: slab-use-after-free in fb_mode_is_equal+0x285/0x2f0 Read of size 4 at addr ff11000001b3c69c by task syz.xxx ... Call Trace: <TASK> dump_stack_lvl+0xab/0xe0 print_address_description.constprop.0+0x2c/0x390 print_report+0xb9/0x280 kasan_report+0xb8/0xf0 fb_mode_is_equal+0x285/0x2f0 fbcon_mode_deleted+0x129/0x180 fb_set_var+0xe7f/0x11d0 do_fb_ioctl+0x6a0/0x750 fb_ioctl+0xe0/0x140 __x64_sys_ioctl+0x193/0x210 do_syscall_64+0x5f/0x9c0 entry_SYSCALL_64_after_hwframe+0x76/0x7e Based on experimentation and analysis, during framebuffer unregistration, only the memory of fb_info->modelist is freed, without setting the corresponding fb_display[i]->mode to NULL for the freed modes. This leads to UAF issues during subsequent accesses. Here's an example of reproduction steps: 1. With /dev/fb0 already registered in the system, load a kernel module to register a new device /dev/fb1; 2. Set fb1's mode to the global fb_display[] array (via FBIOPUT_CON2FBMAP); 3. Switch console from fb to VGA (to allow normal rmmod of the ko); 4. Unload the kernel module, at this point fb1's modelist is freed, leaving a wild pointer in fb_display[]; 5. Trigger the bug via system calls through fb0 attempting to delete a mode from fb0. Add a check in do_unregister_framebuffer(): if the m…

WID-SEC-W-2025-2756 — Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen oder weitere, nicht spezifizierte Auswirkungen zu erlangen.