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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64/fpsimd: signal: Fix restoration of SVE context\n\nWhen SME is supported, Restoring SVE signal context can go wrong in a\nfew ways, including placing the task into an invalid state where the\nkernel may read from out-of-bounds memory (and may potentially take a\nfatal fault) and/or may kill the task with a SIGKILL.\n\n(1) Restoring a context with SVE_SIG_FLAG_SM set can place the task into\n    an invalid state where SVCR.SM is set (and sve_state is non-NULL)\n    but TIF_SME is clear, consequently resuting in out-of-bounds memory\n    reads and/or killing the task with SIGKILL.\n\n    This can only occur in unusual (but legitimate) cases where the SVE\n    signal context has either been modified by userspace or was saved in\n    the context of another task (e.g. as with CRIU), as otherwise the\n    presence of an SVE signal context with SVE_SIG_FLAG_SM implies that\n    TIF_SME is already set.\n\n    While in this state, task_fpsimd_load() will NOT configure SMCR_ELx\n    (leaving some arbitrary value configured in hardware) before\n    restoring SVCR and attempting to restore the streaming mode SVE\n    registers from memory via sve_load_state(). As the value of\n    SMCR_ELx.LEN may be larger than the task\u0027s streaming SVE vector\n    length, this may read memory outside of the task\u0027s allocated\n    sve_state, reading unrelated data and/or triggering a fault.\n\n    While this can result in secrets being loaded into streaming SVE\n    registers, these values are never exposed. As TIF_SME is clear,\n    fpsimd_bind_task_to_cpu() will configure CPACR_ELx.SMEN to trap EL0\n    accesses to streaming mode SVE registers, so these cannot be\n    accessed directly at EL0. As fpsimd_save_user_state() verifies the\n    live vector length before saving (S)SVE state to memory, no secret\n    values can be saved back to memory (and hence cannot be observed via\n    ptrace, signals, etc).\n\n    When the live vector length doesn\u0027t match the expected vector length\n    for the task, fpsimd_save_user_state() will send a fatal SIGKILL\n    signal to the task. Hence the task may be killed after executing\n    userspace for some period of time.\n\n(2) Restoring a context with SVE_SIG_FLAG_SM clear does not clear the\n    task\u0027s SVCR.SM. If SVCR.SM was set prior to restoring the context,\n    then the task will be left in streaming mode unexpectedly, and some\n    register state will be combined inconsistently, though the task will\n    be left in legitimate state from the kernel\u0027s PoV.\n\n    This can only occur in unusual (but legitimate) cases where ptrace\n    has been used to set SVCR.SM after entry to the sigreturn syscall,\n    as syscall entry clears SVCR.SM.\n\n    In these cases, the the provided SVE register data will be loaded\n    into the task\u0027s sve_state using the non-streaming SVE vector length\n    and the FPSIMD registers will be merged into this using the\n    streaming SVE vector length.\n\nFix (1) by setting TIF_SME when setting SVCR.SM. This also requires\nensuring that the task\u0027s sme_state has been allocated, but as this could\ncontain live ZA state, it should not be zeroed. Fix (2) by clearing\nSVCR.SM when restoring a SVE signal context with SVE_SIG_FLAG_SM clear.\n\nFor consistency, I\u0027ve pulled the manipulation of SVCR, TIF_SVE, TIF_SME,\nand fp_type earlier, immediately after the allocation of\nsve_state/sme_state, before the restore of the actual register state.\nThis makes it easier to ensure that these are always modified\nconsistently, even if a fault is taken while reading the register data\nfrom the signal context. I do not expect any software to depend on the\nexact state restored when a fault is taken while reading the context."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/io-wq: check IO_WQ_BIT_EXIT inside work run loop\n\nCurrently this is checked before running the pending work. Normally this\nis quite fine, as work items either end up blocking (which will create a\nnew worker for other items), or they complete fairly quickly. But syzbot\nreports an issue where io-wq takes seemingly forever to exit, and with a\nbit of debugging, this turns out to be because it queues a bunch of big\n(2GB - 4096b) reads with a /dev/msr* file. Since this file type doesn\u0027t\nsupport -\u003eread_iter(), loop_rw_iter() ends up handling them. Each read\nreturns 16MB of data read, which takes 20 (!!) seconds. With a bunch of\nthese pending, processing the whole chain can take a long time. Easily\nlonger than the syzbot uninterruptible sleep timeout of 140 seconds.\nThis then triggers a complaint off the io-wq exit path:\n\nINFO: task syz.4.135:6326 blocked for more than 143 seconds.\n      Not tainted syzkaller #0\n      Blocked by coredump.\n\"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\ntask:syz.4.135       state:D stack:26824 pid:6326  tgid:6324  ppid:5957   task_flags:0x400548 flags:0x00080000\nCall Trace:\n \u003cTASK\u003e\n context_switch kernel/sched/core.c:5256 [inline]\n __schedule+0x1139/0x6150 kernel/sched/core.c:6863\n __schedule_loop kernel/sched/core.c:6945 [inline]\n schedule+0xe7/0x3a0 kernel/sched/core.c:6960\n schedule_timeout+0x257/0x290 kernel/time/sleep_timeout.c:75\n do_wait_for_common kernel/sched/completion.c:100 [inline]\n __wait_for_common+0x2fc/0x4e0 kernel/sched/completion.c:121\n io_wq_exit_workers io_uring/io-wq.c:1328 [inline]\n io_wq_put_and_exit+0x271/0x8a0 io_uring/io-wq.c:1356\n io_uring_clean_tctx+0x10d/0x190 io_uring/tctx.c:203\n io_uring_cancel_generic+0x69c/0x9a0 io_uring/cancel.c:651\n io_uring_files_cancel include/linux/io_uring.h:19 [inline]\n do_exit+0x2ce/0x2bd0 kernel/exit.c:911\n do_group_exit+0xd3/0x2a0 kernel/exit.c:1112\n get_signal+0x2671/0x26d0 kernel/signal.c:3034\n arch_do_signal_or_restart+0x8f/0x7e0 arch/x86/kernel/signal.c:337\n __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]\n exit_to_user_mode_loop+0x8c/0x540 kernel/entry/common.c:75\n __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]\n syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]\n syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]\n syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]\n do_syscall_64+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fa02738f749\nRSP: 002b:00007fa0281ae0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca\nRAX: fffffffffffffe00 RBX: 00007fa0275e6098 RCX: 00007fa02738f749\nRDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa0275e6098\nRBP: 00007fa0275e6090 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 00007fa0275e6128 R14: 00007fff14e4fcb0 R15: 00007fff14e4fd98\n\nThere\u0027s really nothing wrong here, outside of processing these reads\nwill take a LONG time. However, we can speed up the exit by checking the\nIO_WQ_BIT_EXIT inside the io_worker_handle_work() loop, as syzbot will\nexit the ring after queueing up all of these reads. Then once the first\nitem is processed, io-wq will simply cancel the rest. That should avoid\nsyzbot running into this complaint again."
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/27e47500fac23d15b7dc93ff650bc4844d2581bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/d05d99573f81a091547b1778b9a50120f5d6c68a"
        },
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          "url": "https://git.kernel.org/stable/c/85eb83694a91c89d9abe615d717c0053c3efa714"
        },
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          "url": "https://git.kernel.org/stable/c/2e8ca1078b14142db2ce51cbd18ff9971560046b"
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        },
        {
          "url": "https://git.kernel.org/stable/c/10dc959398175736e495f71c771f8641e1ca1907"
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      ],
      "title": "io_uring/io-wq: check IO_WQ_BIT_EXIT inside work run loop",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23113",
    "datePublished": "2026-02-14T15:09:46.379Z",
    "dateReserved": "2026-01-13T15:37:45.968Z",
    "dateUpdated": "2026-05-11T22:00:22.445Z",
    "state": "PUBLISHED"
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "version": "5.18"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.1.162",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.6.122",
              "versionType": "semver"
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "6.18.8",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
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                  "vulnerable": true
                },
                {
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npmdomain: imx8m-blk-ctrl: Remove separate rst and clk mask for 8mq vpu\n\nFor i.MX8MQ platform, the ADB in the VPUMIX domain has no separate reset\nand clock enable bits, but is ungated and reset together with the VPUs.\nSo we can\u0027t reset G1 or G2 separately, it may led to the system hang.\nRemove rst_mask and clk_mask of imx8mq_vpu_blk_ctl_domain_data.\nLet imx8mq_vpu_power_notifier() do really vpu reset."
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        },
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          "url": "https://git.kernel.org/stable/c/fd675de6bddf7e9bdf42ae3929d4c27ba6d1ef76"
        },
        {
          "url": "https://git.kernel.org/stable/c/3de49966499634454fd59e0e6fecd50baab7febd"
        }
      ],
      "title": "pmdomain: imx8m-blk-ctrl: Remove separate rst and clk mask for 8mq vpu",
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    "cveId": "CVE-2026-23116",
    "datePublished": "2026-02-14T15:09:48.511Z",
    "dateReserved": "2026-01-13T15:37:45.969Z",
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