fkie_cve-2023-53329
Vulnerability from fkie_nvd
Published
2025-09-16 17:15
Modified
2025-09-17 14:18
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: workqueue: fix data race with the pwq->stats[] increment KCSAN has discovered a data race in kernel/workqueue.c:2598: [ 1863.554079] ================================================================== [ 1863.554118] BUG: KCSAN: data-race in process_one_work / process_one_work [ 1863.554142] write to 0xffff963d99d79998 of 8 bytes by task 5394 on cpu 27: [ 1863.554154] process_one_work (kernel/workqueue.c:2598) [ 1863.554166] worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2752) [ 1863.554177] kthread (kernel/kthread.c:389) [ 1863.554186] ret_from_fork (arch/x86/kernel/process.c:145) [ 1863.554197] ret_from_fork_asm (arch/x86/entry/entry_64.S:312) [ 1863.554213] read to 0xffff963d99d79998 of 8 bytes by task 5450 on cpu 12: [ 1863.554224] process_one_work (kernel/workqueue.c:2598) [ 1863.554235] worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2752) [ 1863.554247] kthread (kernel/kthread.c:389) [ 1863.554255] ret_from_fork (arch/x86/kernel/process.c:145) [ 1863.554266] ret_from_fork_asm (arch/x86/entry/entry_64.S:312) [ 1863.554280] value changed: 0x0000000000001766 -> 0x000000000000176a [ 1863.554295] Reported by Kernel Concurrency Sanitizer on: [ 1863.554303] CPU: 12 PID: 5450 Comm: kworker/u64:1 Tainted: G L 6.5.0-rc6+ #44 [ 1863.554314] Hardware name: ASRock X670E PG Lightning/X670E PG Lightning, BIOS 1.21 04/26/2023 [ 1863.554322] Workqueue: btrfs-endio btrfs_end_bio_work [btrfs] [ 1863.554941] ================================================================== lockdep_invariant_state(true); → pwq->stats[PWQ_STAT_STARTED]++; trace_workqueue_execute_start(work); worker->current_func(work); Moving pwq->stats[PWQ_STAT_STARTED]++; before the line raw_spin_unlock_irq(&pool->lock); resolves the data race without performance penalty. KCSAN detected at least one additional data race: [ 157.834751] ================================================================== [ 157.834770] BUG: KCSAN: data-race in process_one_work / process_one_work [ 157.834793] write to 0xffff9934453f77a0 of 8 bytes by task 468 on cpu 29: [ 157.834804] process_one_work (/home/marvin/linux/kernel/linux_torvalds/kernel/workqueue.c:2606) [ 157.834815] worker_thread (/home/marvin/linux/kernel/linux_torvalds/./include/linux/list.h:292 /home/marvin/linux/kernel/linux_torvalds/kernel/workqueue.c:2752) [ 157.834826] kthread (/home/marvin/linux/kernel/linux_torvalds/kernel/kthread.c:389) [ 157.834834] ret_from_fork (/home/marvin/linux/kernel/linux_torvalds/arch/x86/kernel/process.c:145) [ 157.834845] ret_from_fork_asm (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/entry_64.S:312) [ 157.834859] read to 0xffff9934453f77a0 of 8 bytes by task 214 on cpu 7: [ 157.834868] process_one_work (/home/marvin/linux/kernel/linux_torvalds/kernel/workqueue.c:2606) [ 157.834879] worker_thread (/home/marvin/linux/kernel/linux_torvalds/./include/linux/list.h:292 /home/marvin/linux/kernel/linux_torvalds/kernel/workqueue.c:2752) [ 157.834890] kthread (/home/marvin/linux/kernel/linux_torvalds/kernel/kthread.c:389) [ 157.834897] ret_from_fork (/home/marvin/linux/kernel/linux_torvalds/arch/x86/kernel/process.c:145) [ 157.834907] ret_from_fork_asm (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/entry_64.S:312) [ 157.834920] value changed: 0x000000000000052a -> 0x0000000000000532 [ 157.834933] Reported by Kernel Concurrency Sanitizer on: [ 157.834941] CPU: 7 PID: 214 Comm: kworker/u64:2 Tainted: G L 6.5.0-rc7-kcsan-00169-g81eaf55a60fc #4 [ 157.834951] Hardware name: ASRock X670E PG Lightning/X670E PG Lightning, BIOS 1.21 04/26/2023 [ 157.834958] Workqueue: btrfs-endio btrfs_end_bio_work [btrfs] [ 157.835567] ================================================================== in code: trace_workqueue_execute_end(work, worker->current_func); → pwq->stats[PWQ_STAT_COM ---truncated---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce55024f28589b0012fa2c6b5748ec5a180b7fbe
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe48ba7daefe75bbbefa2426deddc05f2d530d2d
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nworkqueue: fix data race with the pwq-\u003estats[] increment\n\nKCSAN has discovered a data race in kernel/workqueue.c:2598:\n\n[ 1863.554079] ==================================================================\n[ 1863.554118] BUG: KCSAN: data-race in process_one_work / process_one_work\n\n[ 1863.554142] write to 0xffff963d99d79998 of 8 bytes by task 5394 on cpu 27:\n[ 1863.554154] process_one_work (kernel/workqueue.c:2598)\n[ 1863.554166] worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2752)\n[ 1863.554177] kthread (kernel/kthread.c:389)\n[ 1863.554186] ret_from_fork (arch/x86/kernel/process.c:145)\n[ 1863.554197] ret_from_fork_asm (arch/x86/entry/entry_64.S:312)\n\n[ 1863.554213] read to 0xffff963d99d79998 of 8 bytes by task 5450 on cpu 12:\n[ 1863.554224] process_one_work (kernel/workqueue.c:2598)\n[ 1863.554235] worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2752)\n[ 1863.554247] kthread (kernel/kthread.c:389)\n[ 1863.554255] ret_from_fork (arch/x86/kernel/process.c:145)\n[ 1863.554266] ret_from_fork_asm (arch/x86/entry/entry_64.S:312)\n\n[ 1863.554280] value changed: 0x0000000000001766 -\u003e 0x000000000000176a\n\n[ 1863.554295] Reported by Kernel Concurrency Sanitizer on:\n[ 1863.554303] CPU: 12 PID: 5450 Comm: kworker/u64:1 Tainted: G             L     6.5.0-rc6+ #44\n[ 1863.554314] Hardware name: ASRock X670E PG Lightning/X670E PG Lightning, BIOS 1.21 04/26/2023\n[ 1863.554322] Workqueue: btrfs-endio btrfs_end_bio_work [btrfs]\n[ 1863.554941] ==================================================================\n\n    lockdep_invariant_state(true);\n\u2192   pwq-\u003estats[PWQ_STAT_STARTED]++;\n    trace_workqueue_execute_start(work);\n    worker-\u003ecurrent_func(work);\n\nMoving pwq-\u003estats[PWQ_STAT_STARTED]++; before the line\n\n    raw_spin_unlock_irq(\u0026pool-\u003elock);\n\nresolves the data race without performance penalty.\n\nKCSAN detected at least one additional data race:\n\n[  157.834751] ==================================================================\n[  157.834770] BUG: KCSAN: data-race in process_one_work / process_one_work\n\n[  157.834793] write to 0xffff9934453f77a0 of 8 bytes by task 468 on cpu 29:\n[  157.834804] process_one_work (/home/marvin/linux/kernel/linux_torvalds/kernel/workqueue.c:2606)\n[  157.834815] worker_thread (/home/marvin/linux/kernel/linux_torvalds/./include/linux/list.h:292 /home/marvin/linux/kernel/linux_torvalds/kernel/workqueue.c:2752)\n[  157.834826] kthread (/home/marvin/linux/kernel/linux_torvalds/kernel/kthread.c:389)\n[  157.834834] ret_from_fork (/home/marvin/linux/kernel/linux_torvalds/arch/x86/kernel/process.c:145)\n[  157.834845] ret_from_fork_asm (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/entry_64.S:312)\n\n[  157.834859] read to 0xffff9934453f77a0 of 8 bytes by task 214 on cpu 7:\n[  157.834868] process_one_work (/home/marvin/linux/kernel/linux_torvalds/kernel/workqueue.c:2606)\n[  157.834879] worker_thread (/home/marvin/linux/kernel/linux_torvalds/./include/linux/list.h:292 /home/marvin/linux/kernel/linux_torvalds/kernel/workqueue.c:2752)\n[  157.834890] kthread (/home/marvin/linux/kernel/linux_torvalds/kernel/kthread.c:389)\n[  157.834897] ret_from_fork (/home/marvin/linux/kernel/linux_torvalds/arch/x86/kernel/process.c:145)\n[  157.834907] ret_from_fork_asm (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/entry_64.S:312)\n\n[  157.834920] value changed: 0x000000000000052a -\u003e 0x0000000000000532\n\n[  157.834933] Reported by Kernel Concurrency Sanitizer on:\n[  157.834941] CPU: 7 PID: 214 Comm: kworker/u64:2 Tainted: G             L     6.5.0-rc7-kcsan-00169-g81eaf55a60fc #4\n[  157.834951] Hardware name: ASRock X670E PG Lightning/X670E PG Lightning, BIOS 1.21 04/26/2023\n[  157.834958] Workqueue: btrfs-endio btrfs_end_bio_work [btrfs]\n[  157.835567] ==================================================================\n\nin code:\n\n        trace_workqueue_execute_end(work, worker-\u003ecurrent_func);\n\u2192       pwq-\u003estats[PWQ_STAT_COM\n---truncated---"
    }
  ],
  "id": "CVE-2023-53329",
  "lastModified": "2025-09-17T14:18:55.093",
  "metrics": {},
  "published": "2025-09-16T17:15:39.207",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ce55024f28589b0012fa2c6b5748ec5a180b7fbe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fe48ba7daefe75bbbefa2426deddc05f2d530d2d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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