CVE-2025-21874

In the Linux kernel, the following vulnerability has been resolved: dm-integrity: Avoid divide by zero in table status in Inline mode In Inline mode, the journal is unused, and journal_sectors is zero. Calculating the journal watermark requires dividing by journal_sectors, which should be done only if the journal is configured. Otherwise, a simple table query (dmsetup table) can cause OOPS. This bug did not show on some systems, perhaps only due to compiler optimization. On my 32-bit testing machine, this reliably crashes with the following: : Oops: divide error: 0000 [#1] PREEMPT SMP : CPU: 0 UID: 0 PID: 2450 Comm: dmsetup Not tainted 6.14.0-rc2+ #959 : EIP: dm_integrity_status+0x2f8/0xab0 [dm_integrity] ...

• KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level {CVE-2026-63807}
• KVM: x86: Check for invalid/obsolete root after making MMU pages available {CVE-2026-64561}
• ubi: Fix use-after-free when volume resizing failed {CVE-2023-53271}
• ice: Check VF VSI Pointer Value in ice_vc_add_fdir_fltr() {CVE-2025-37912}
• wifi: mt76: mt7925: prevent NULL pointer dereference in mt7925_tx_check_aggr() {CVE-2026-53318}
• dpll: Prevent duplicate registrations {CVE-2026-23129}
• pinmux: fix race causing mux_owner NULL with active mux_usecount {CVE-2025-38632}
• HID: apple: validate feature-report field count to prevent NULL pointer dereference {CVE-2025-38557}
• thunderbolt: Limit XDomain response copy to actual frame size {CVE-2026-53146}
• net/mlx5e: Fix DMA FIFO desync on error CQE SQ recovery {CVE-2026-43466}
• virtio_net: Fix UAF on dst_ops when IFF_XMIT_DST_RELEASE is cleared and napi_tx is false {CVE-2026-31469}
• scsi: target: Reset t_task_cdb pointer in error case {CVE-2025-68782}
• ubi: ubi_create_volume: Fix use-after-free when volume creation failed {CVE-2022-49388}
• drm/xe/reg_sr: Fix leak on xa_store failure {CVE-2026-23418}
• ASoC: soc-core: flush delayed work before removing DAIs and widgets {CVE-2026-43459}
• md/raid10: wait barrier before returning discard request with REQ_NOWAIT {CVE-2025-40325}
• nbd: defer config put in recv_work {CVE-2025-68372}
• nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference {CVE-2026-23148}
• net: hns3: using the num_tqps in the vf driver to apply for resources {CVE-2025-71064}
• net/mlx5e: Disable MACsec offload for uplink representor profile {CVE-2025-38020}
• serial: imx: fix tx statemachine deadlock {CVE-2023-52456}
• dm-thin: fix metadata refcount underflow {CVE-2026-46107}
• net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure {CVE-2026-53229}
• drm/amdgpu: Fix use-after-free race in VM acquire {CVE-2026-43370}
• usbnet:fix NPE during rx_complete {CVE-2025-22050}
• platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it {CVE-2025-21645}
• driver core: class: Fix wild pointer dereferences in API class_dev_iter_next() {CVE-2025-21810}
• usb: atm: cxacru: fix a flaw in existing endpoint checks {CVE-2025-21916}
• ALSA: seq: dummy: fix UMP event stack overread {CVE-2026-53241}
• pmdomain: imx8mp-blk-ctrl: Keep the NOC_HDCP clock enabled {CVE-2026-31655}
• net/mlx5: Bridge, fix the crash caused by LAG state check {CVE-2025-21970}
• ALSA: timer: Don't take register_mutex with copy_from/to_user() {CVE-2025-23134}
• md/raid5: validate payload size before accessing journal metadata {CVE-2026-46070}
• nvmet-fc: move lsop put work to nvmet_fc_ls_req_op {CVE-2025-40171}
• iommu: Fix potential memory leak in iopf_queue_remove_device() {CVE-2025-21770}
• Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak {CVE-2025-40035}
• scsi: sd: fix missing put_disk() when device_add(&disk_dev) fails {CVE-2026-45997}
• can: dev: can_set_termination(): allow sleeping GPIOs {CVE-2024-56625}
• nvme-tcp: fix the memleak while create new ctrl failed {CVE-2024-56632}
• ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3() {CVE-2026-46146}
• pmdomain: imx8m-blk-ctrl: fix out-of-range access of bc->domains {CVE-2026-23187}
• wifi: ath12k: Clear affinity hint before calling ath12k_pci_free_irq() in error path {CVE-2025-22128}
• octeon_ep: Fix memory leak in octep_device_setup() {CVE-2026-23160}
• pinctrl: check the return value of pinmux_ops::get_function_name() {CVE-2025-40030}
• net: tun: fix tun_napi_alloc_frags() {CVE-2024-56372}
• wifi: iwlwifi: mvm: clean up ROC on failure {CVE-2025-21906}
• ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd {CVE-2025-40275}
• dpll: fix xa_alloc_cyclic() error handling {CVE-2025-22016}
• usb: usbtmc: Flush anchored URBs in usbtmc_release {CVE-2026-31758}
• RDMA/siw: Fix potential NULL pointer dereference in header processing…

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

dm-integrity: Avoid divide by zero in table status in Inline mode

In Inline mode, the journal is unused, and journal_sectors is zero.

Calculating the journal watermark requires dividing by journal_sectors, which should be done only if the journal is configured.

Otherwise, a simple table query (dmsetup table) can cause OOPS.

This bug did not show on some systems, perhaps only due to compiler optimization.

On my 32-bit testing machine, this reliably crashes with the following:

: Oops: divide error: 0000 [#1] PREEMPT SMP : CPU: 0 UID: 0 PID: 2450 Comm: dmsetup Not tainted 6.14.0-rc2+ #959 : EIP: dm_integrity_status+0x2f8/0xab0 [dm_integrity] ...

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

• ARM64 architecture;
• PowerPC architecture;
• x86 architecture;
• Block layer subsystem;
• Serial ATA and Parallel ATA drivers;
• Drivers core;
• Network block device driver;
• Bluetooth drivers;
• Character device driver;
• TPM device driver;
• Clock framework and drivers;
• Hardware crypto device drivers;
• FireWire subsystem;
• EFI core;
• Qualcomm firmware drivers;
• GPIO subsystem;
• GPU drivers;
• HID subsystem;
• I2C subsystem;
• I3C subsystem;
• InfiniBand drivers;
• Input Device (Mouse) drivers;
• IOMMU subsystem;
• Multiple devices driver;
• Media drivers;
• NVIDIA Tegra memory controller driver;
• Fastrpc Driver;
• Network drivers;
• Operating Performance Points (OPP) driver;
• PCI subsystem;
• x86 platform drivers;
• PPS (Pulse Per Second) driver;
• PTP clock framework;
• Remote Processor subsystem;
• Real Time Clock drivers;
• S/390 drivers;
• SCSI subsystem;
• QCOM SoC drivers;
• SPI subsystem;
• Media staging drivers;
• Trusted Execution Environment drivers;
• TTY drivers;
• UFS subsystem;
• USB Device Class drivers;
• USB core drivers;
• USB Gadget drivers;
• USB Host Controller drivers;
• Framebuffer layer;
• File systems infrastructure;
• BTRFS file system;
• Ceph distributed file system;
• Network file system (NFS) client;
• Network file system (NFS) server daemon;
• NILFS2 file system;
• Overlay file system;
• SMB network file system;
• UBI file system;
• BPF subsystem;
• Timer subsystem;
• KVM subsystem;
• Networking core;
• ptr_ring data structure definitions;
• Networking subsytem;
• Amateur Radio drivers;
• L3 Master device support module;
• TCP network protocol;
• XFRM subsystem;
• Tracing infrastructure;
• io_uring subsystem;
• Process Accounting mechanism;
• Perf events;
• Padata parallel execution mechanism;
• printk logging mechanism;
• Scheduler infrastructure;
• Workqueue subsystem;
• Memory management;
• B.A.T.M.A.N. meshing protocol;
• Bluetooth subsystem;
• IPv4 networking;
• IPv6 networking;
• MAC80211 subsystem;
• Multipath TCP;
• Netfilter;
• NFC subsystem;
• Open vSwitch;
• Rose network layer;
• RxRPC session sockets;
• Network traffic control;
• Wireless networking;
• Key management;
• Landlock security;
• Linux Security Modules (LSM) Framework;
• Tomoyo security module;
• SoC audio core drivers;
• SOF drivers; (CVE-2025-21737, CVE-2025-21711, CVE-2025-21987, CVE-2025-21848, CVE-2024-49570, CVE-2025-21762, CVE-2025-21738, CVE-2025-21712, CVE-2025-21719, CVE-2025-21870, CVE-2024-57984, CVE-2025-21815, CVE-2025-21744, CVE-2024-58058, CVE-2024-58078, CVE-2024-57990, CVE-2024-54458, CVE-2025-21899, CVE-2025-21814, CVE-2025-21746, CVE-2024-54456, CVE-2025-21739, CVE-2024-58057, CVE-2025-21855, CVE-2025-21758, CVE-2024-58006, CVE-2024-58007, CVE-2025-21720, CVE-2024-58090, CVE-2025-21852, CVE-2024-57982, CVE-2024-58013, CVE-2024-58082, CVE-2025-21825, CVE-2024-58072, CVE-2024-57996, CVE-2025-21787, CVE-2025-21742, CVE-2025-21705, CVE-2025-21829, CVE-2024-58060, CVE-2025-21811, CVE-2025-21900, CVE-2025-21853, CVE-2025-21809, CVE-2025-21938, CVE-2025-21728, CVE-2025-21785, CVE-2025-21732, CVE-2025-21888, CVE-2025-21768, CVE-2025-21875, CVE-2025-21721, CVE-2025-21766, CVE-2025-21892, CVE-2024-57953, CVE-2025-21772, CVE-2025-21735, CVE-2024-58017, CVE-2024-58086, CVE-2024-58084, CVE-2025-21761, CVE-2024-58008, CVE-2024-57988, CVE-2025-21874, CVE-2024-58011, CVE-2025-21706, CVE-2024-57999, CVE-2025-21858, CVE-2024-58061, CVE-2025-21727, CVE-2025-21780, CVE-2024-58051, CVE-2025-21791, CVE-2025-21788, CVE-2025-21786, CVE-2024-58012, CVE-2024-58010, CVE-2024-58001, CVE-2025-21844, CVE-2025-21708, CVE-2024-57834, CVE-2025-21873,…

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

• ARM64 architecture;
• PowerPC architecture;
• x86 architecture;
• Block layer subsystem;
• Serial ATA and Parallel ATA drivers;
• Drivers core;
• Network block device driver;
• Bluetooth drivers;
• Character device driver;
• TPM device driver;
• Clock framework and drivers;
• Hardware crypto device drivers;
• FireWire subsystem;
• EFI core;
• Qualcomm firmware drivers;
• GPIO subsystem;
• GPU drivers;
• HID subsystem;
• I2C subsystem;
• I3C subsystem;
• InfiniBand drivers;
• Input Device (Mouse) drivers;
• IOMMU subsystem;
• Multiple devices driver;
• Media drivers;
• NVIDIA Tegra memory controller driver;
• Fastrpc Driver;
• Network drivers;
• Operating Performance Points (OPP) driver;
• PCI subsystem;
• x86 platform drivers;
• PPS (Pulse Per Second) driver;
• PTP clock framework;
• Remote Processor subsystem;
• Real Time Clock drivers;
• S/390 drivers;
• SCSI subsystem;
• QCOM SoC drivers;
• SPI subsystem;
• Media staging drivers;
• Trusted Execution Environment drivers;
• TTY drivers;
• UFS subsystem;
• USB Device Class drivers;
• USB core drivers;
• USB Gadget drivers;
• USB Host Controller drivers;
• Framebuffer layer;
• File systems infrastructure;
• BTRFS file system;
• Ceph distributed file system;
• Network file system (NFS) client;
• Network file system (NFS) server daemon;
• NILFS2 file system;
• Overlay file system;
• SMB network file system;
• UBI file system;
• BPF subsystem;
• Timer subsystem;
• KVM subsystem;
• Networking core;
• ptr_ring data structure definitions;
• Networking subsytem;
• Amateur Radio drivers;
• L3 Master device support module;
• TCP network protocol;
• XFRM subsystem;
• Tracing infrastructure;
• io_uring subsystem;
• Process Accounting mechanism;
• Perf events;
• Padata parallel execution mechanism;
• printk logging mechanism;
• Scheduler infrastructure;
• Workqueue subsystem;
• Memory management;
• B.A.T.M.A.N. meshing protocol;
• Bluetooth subsystem;
• IPv4 networking;
• IPv6 networking;
• MAC80211 subsystem;
• Multipath TCP;
• Netfilter;
• NFC subsystem;
• Open vSwitch;
• Rose network layer;
• RxRPC session sockets;
• Network traffic control;
• Wireless networking;
• Key management;
• Landlock security;
• Linux Security Modules (LSM) Framework;
• Tomoyo security module;
• SoC audio core drivers;
• SOF drivers; (CVE-2025-21799, CVE-2025-21765, CVE-2024-57834, CVE-2025-21971, CVE-2025-21855, CVE-2024-58019, CVE-2025-21987, CVE-2025-21754, CVE-2025-21779, CVE-2024-57986, CVE-2025-21809, CVE-2025-21887, CVE-2025-21744, CVE-2024-58014, CVE-2025-21892, CVE-2025-21848, CVE-2024-58051, CVE-2024-58085, CVE-2025-21862, CVE-2024-57981, CVE-2024-57987, CVE-2024-58053, CVE-2024-58063, CVE-2024-58079, CVE-2025-21875, CVE-2025-21715, CVE-2024-58004, CVE-2025-21857, CVE-2025-21856, CVE-2025-21938, CVE-2024-58082, CVE-2025-21815, CVE-2025-21864, CVE-2024-52559, CVE-2024-58078, CVE-2024-57989, CVE-2024-58001, CVE-2025-21889, CVE-2025-21739, CVE-2024-58005, CVE-2025-21829, CVE-2024-58069, CVE-2025-21712, CVE-2025-21846, CVE-2025-21883, CVE-2025-21852, CVE-2025-21808, CVE-2025-21900, CVE-2025-21888, CVE-2025-21784, CVE-2025-21838, CVE-2024-58054, CVE-2025-21781, CVE-2025-21737, CVE-2024-58013, CVE-2025-21885, CVE-2025-21877, CVE-2024-58010, CVE-2025-21844, CVE-2024-58012, CVE-2024-58083, CVE-2025-21783, CVE-2025-21798, CVE-2024-57973, CVE-2024-57982, CVE-2025-21708, CVE-2024-58003, CVE-2025-21786, CVE-2025-21750, CVE-2025-21870, CVE-2025-21745, CVE-2024-58081, CVE-2024-57979, CVE-2025-21718, CVE-2025-21816, CVE-2025-21868, CVE-2025-21731, CVE-2025-21814, CVE-2025-21826, CVE-2024-58006, CVE-2025-21821, CVE-2024-57852, CVE-2025-21746,…