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ALSA-2025:20518 — Moderate: kernel security 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: can: isotp: fix potential CAN frame reception race in isotp_rcv() (CVE-2022-48830) * kernel: soc: qcom: cmd-db: Map shared memory as WC, not WB (CVE-2024-46689) * kernel: Squashfs: sanity check symbolic link size (CVE-2024-46744) * kernel: vfs: fix race between evice_inodes() and find_inode()&iput() (CVE-2024-47679) * kernel: x86/tdx: Fix "in-kernel MMIO" check (CVE-2024-47727) * kernel: rxrpc: Fix a race between socket set up and I/O thread creation (CVE-2024-49864) * kernel: io_uring: check if we need to reschedule during overflow flush (CVE-2024-50060) * kernel: can: m_can: pci: add missing m_can_class_free_dev() in probe/remove methods (CVE-2022-49024) * kernel: posix-clock: Fix missing timespec64 check in pc_clock_settime() (CVE-2024-50195) * kernel: rxrpc: Fix missing locking causing hanging calls (CVE-2024-50294) * kernel: io_uring/rw: fix missing NOWAIT check for O_DIRECT start write (CVE-2024-53052) * kernel: afs: Fix lock recursion (CVE-2024-53090) * kernel: virtio/vsock: Fix accept_queue memory leak (CVE-2024-53119) * kernel: KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN (CVE-2024-53135) * kernel: xen: Xen hypercall page unsafe against speculative attacks (Xen Security Advisory 466) (CVE-2024-53241) * kernel: RDMA/rxe: Fix the qp flush warnings in req (CVE-2024-53229) * kernel:…

bdu:2026-04873

BELL-CVE-2024-56709

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

certfr-2025-avi-0088 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un at…

certfr-2025-avi-0088

EUVD-2026-346524

fkie_cve-2024-56709

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

io_uring: check if iowq is killed before queuing

task work can be executed after the task has gone through io_uring termination, whether it's the final task_work run or the fallback path. In this case, task work will find ->io_wq being already killed and null'ed, which is a problem if it then tries to forward the request to io_queue_iowq(). Make io_queue_iowq() fail requests in this case.

Note that it also checks PF_KTHREAD, because the user can first close a DEFER_TASKRUN ring and shortly after kill the task, in which case ->iowq check would race.

GHSA-6mmm-fwjc-qrhc

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

io_uring: check if iowq is killed before queuing

Note that it also checks PF_KTHREAD, because the user can first close a DEFER_TASKRUN ring and shortly after kill the task, in which case ->iowq check would race.

msrc_CVE-2024-56709 — io_uring: check if iowq is killed before queuing

msrc_CVE-2024-56709

OESA-2025-1032 — 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: sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK When CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are selected, cpu_max_bits_warn() generates a runtime warning similar as below when showing /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit) instead of NR_CPUS to iterate CPUs. [ 3.052463] ------------[ cut here ]------------ [ 3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0 [ 3.070072] Modules linked in: efivarfs autofs4 [ 3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052 [ 3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000 [ 3.109127] 9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430 [ 3.118774] 90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff [ 3.128412] 0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890 [ 3.138056] 0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa [ 3.147711] ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000 [ 3.157364] 900000000101c998 0000000000000004 9000000000ef7430 0000000000000000 [ 3.167012] 0000000000000009 000000000000006c 0000000000000000 0000000000000000 [ 3.176641] 9000000000d3de08 9000000001…

RHSA-2025:20518 — Red Hat Security Advisory: kernel security update

kernel: can: isotp: fix potential CAN frame reception race in isotp_rcv() kernel: can: m_can: pci: add missing m_can_class_free_dev() in probe/remove methods kernel: can: isotp: sanitize CAN ID checks in isotp_bind() kernel: powerpc/papr_scm: don't requests stats with '0' sized stats buffer kernel: efi: Do not import certificates from UEFI Secure Boot for T2 Macs kernel: powerpc/xics: fix refcount leak in icp_opal_init() kernel: powerpc/xive: Fix refcount leak in xive_spapr_init kernel: list: fix a data-race around ep->rdllist kernel: powerpc/xive/spapr: correct bitmap allocation size kernel: ima: Fix potential memory leak in ima_init_crypto() kernel: ima: Fix a potential integer overflow in ima_appraise_measurement kernel: tracing/histograms: Fix memory leak problem kernel: usbnet: fix memory leak in error case kernel: linux/dim: Fix divide by 0 in RDMA DIM kernel: net: tun: unlink NAPI from device on destruction kernel: can: j1939: j1939_send_one(): fix missing CAN header initialization kernel: intel_th: Fix a resource leak in an error handling path kernel: powerpc/rtas: avoid scheduling in rtas_os_term() kernel: can: isotp: split tx timer into transmission and timeout kernel: Linux kernel: Denial of Service in xsk_diag due to use-after-free during socket cleanup kernel: smc: Fix use-after-free in tcp_write_timer_handler() kernel: inotify: Avoid reporting event with invalid wd kernel: Linux kernel (CAN J1939): Denial of Service via deadlock kernel: net/smc: fix potential p…

SUSE-SU-2025:0289-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2024-56709

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 144 more

In the Linux kernel, the following vulnerability has been resolved: io_uring: check if iowq is killed before queuing task work can be executed after the task has gone through io_uring termination, whether it's the final task_work run or the fallback path. In this case, task work will find ->io_wq being already killed and null'ed, which is a problem if it then tries to forward the request to io_queue_iowq(). Make io_queue_iowq() fail requests in this case. Note that it also checks PF_KTHREAD, because the user can first close a DEFER_TASKRUN ring and shortly after kill the task, in which case ->iowq check would race.

WID-SEC-W-2024-3762 — Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein lokaler Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen und um nicht näher beschriebene Effekte zu erzielen.