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CVSS: 8.4EPSS: 0%CPEs: 2EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: virtio: break and reset virtio devices on device_shutdown() Hongyu reported a hang on kexec in a VM. QEMU reported invalid memory accesses during the hang. Invalid read at addr 0x102877002, size 2, region '(null)', reason: rejected Invalid write at addr 0x102877A44, size 2, region '(null)', reason: rejected ... It was traced down to virtio-console. Kexec works fine if virtio-console is not in use. • https://git.kernel.org/stable/c/aee42f3d57bfa37b2716df4584edeecf63b9df4c •

CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: dm: fix unconditional IO throttle caused by REQ_PREFLUSH When a bio with REQ_PREFLUSH is submitted to dm, __send_empty_flush() generates a flush_bio with REQ_OP_WRITE | REQ_PREFLUSH | REQ_SYNC, which causes the flush_bio to be throttled by wbt_wait(). An example from v5.4, similar problem also exists in upstream: crash> bt 2091206 PID: 2091206 TASK: ffff2050df92a300 CPU: 109 COMMAND: "kworker/u260:0" #0 [ffff800084a2f7f0] __switch_to at fff... • https://git.kernel.org/stable/c/95d08924335f3b6f4ea0b92ebfe4fe0731c502d9 •

CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: genirq/msi: Store the IOMMU IOVA directly in msi_desc instead of iommu_cookie The IOMMU translation for MSI message addresses has been a 2-step process, separated in time: 1) iommu_dma_prepare_msi(): A cookie pointer containing the IOVA address is stored in the MSI descriptor when an MSI interrupt is allocated. 2) iommu_dma_compose_msi_msg(): this cookie pointer is used to compute a translated message address. This has an inherent lifetime ... • https://git.kernel.org/stable/c/e4d3763223c7b72ded53425207075e7453b4e3d5 •

CVSS: 7.1EPSS: 0%CPEs: 8EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: net: pktgen: fix access outside of user given buffer in pktgen_thread_write() Honour the user given buffer size for the strn_len() calls (otherwise strn_len() will access memory outside of the user given buffer). In the Linux kernel, the following vulnerability has been resolved: net: pktgen: fix access outside of user given buffer in pktgen_thread_write() Honour the user given buffer size for the strn_len() calls (otherwise strn_len() will... • https://git.kernel.org/stable/c/a3d89f1cfe1e6d4bb164db2595511fd33db21900 •

CVSS: 7.1EPSS: 0%CPEs: 3EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: bpf: copy_verifier_state() should copy 'loop_entry' field The bpf_verifier_state.loop_entry state should be copied by copy_verifier_state(). Otherwise, .loop_entry values from unrelated states would poison env->cur_state. Additionally, env->stack should not contain any states with .loop_entry != NULL. The states in env->stack are yet to be verified, while .loop_entry is set for states that reached an equivalent state. This means that env->c... • https://git.kernel.org/stable/c/46ba5757a7a4714e7d3f68cfe118208822cb3d78 •

CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: btrfs: avoid NULL pointer dereference if no valid csum tree [BUG] When trying read-only scrub on a btrfs with rescue=idatacsums mount option, it will crash with the following call trace: BUG: kernel NULL pointer dereference, address: 0000000000000208 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page CPU: 1 UID: 0 PID: 835 Comm: btrfs Tainted: G O 6.15.0-rc3-custom+ #236 PREEMPT(full) Hardware name: QEMU S... • https://git.kernel.org/stable/c/50d0de59f66cbe6d597481e099bf1c70fd07e0a9 •

CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: __legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock ... or we risk stealing final mntput from sync umount - raising mnt_count after umount(2) has verified that victim is not busy, but before it has set MNT_SYNC_UMOUNT; in that case __legitimize_mnt() doesn't see that it's safe to quietly undo mnt_count increment and leaves dropping the reference to caller, where it'll be a full-blown mntput(). Check under mount_lock is ... • https://git.kernel.org/stable/c/628fb00195ce21a90cf9e4e3d105cd9e58f77b40 •

CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: espintcp: fix skb leaks A few error paths are missing a kfree_skb. • https://git.kernel.org/stable/c/e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 •

CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: idpf: fix null-ptr-deref in idpf_features_check idpf_features_check is used to validate the TX packet. skb header length is compared with the hardware supported value received from the device control plane. The value is stored in the adapter structure and to access it, vport pointer is used. During reset all the vports are released and the vport pointer that the netdev private structure points to is NULL. To avoid null-ptr-deref, store the ... • https://git.kernel.org/stable/c/a251eee62133774cf35ff829041377e721ef9c8c •

CVSS: 7.1EPSS: 0%CPEs: 7EXPL: 0

18 Jun 2025 — In the Linux kernel, the following vulnerability has been resolved: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done Syzbot reported a slab-use-after-free with the following call trace: ================================================================== BUG: KASAN: slab-use-after-free in tipc_aead_encrypt_done+0x4bd/0x510 net/tipc/crypto.c:840 Read of size 8 at addr ffff88807a733000 by task kworker/1:0/25 Call Trace: kasan_report+0xd9/0x110 mm/kasan/report.c:601 tipc_aead_encrypt_done+0x4bd/0... • https://git.kernel.org/stable/c/fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 •