# CVE-2024-26681: linux: In the Linux kernel, the following vulnerability has been resolved:  netdevsim: avoid potential loop in nsim_dev_trap...

CVE-2024-26681 is fixed in 35 products on 1 platform, first by ALAS2023-2024-549, released February 29, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-26681
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 29, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  netdevsim: avoid potential loop in nsim_dev_trap_report_work()  Many syzbot reports include the following trace [1]  If nsim_dev_trap_report_work() can not grab the mutex, it should rearm itself at least one jiffie later.  [1] Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 32383 Comm: kworker/0:2 Not tainted 6.8.0-rc2-syzkaller-00031-g861c0981648f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: events nsim_dev_trap_report_work  RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:89 [inline]  RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]  RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]  RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]  RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]  RIP: 0010:kasan_check_range+0x101/0x190 mm/kasan/generic.c:189 Code: 07 49 39 d1 75 0a 45 3a 11 b8 01 00 00 00 7c 0b 44 89 c2 e8 21 ed ff ff 83 f0 01 5b 5d 41 5c c3 48 85 d2 74 4f 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 41 80 38 00 74 f2 eb b6 41 bc 08 00 00 00 RSP: 0018:ffffc90012dcf998 EFLAGS: 00000046 RAX: fffffbfff258af1e RBX: fffffbfff258af1f RCX: ffffffff8168eda3 RDX: fffffbfff258af1f RSI: 0000000000000004 RDI: ffffffff92c578f0 RBP: fffffbfff258af1e R08: 0000000000000000 R09: fffffbfff258af1e R10: ffffffff92c578f3 R11: ffffffff8acbcbc0 R12: 0000000000000002 R13: ffff88806db38400 R14: 1ffff920025b9f42 R15: ffffffff92c578e8 FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00994e078 CR3: 000000002c250000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace:  <NMI>  </NMI>  <TASK>   instrument_atomic_read include/linux/instrumented.h:68 [inline]   atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]   queued_spin_is_locked include/asm-generic/qspinlock.h:57 [inline]   debug_spin_unlock kernel/locking/spinlock_debug.c:101 [inline]   do_raw_spin_unlock+0x53/0x230 kernel/locking/spinlock_debug.c:141   __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline]   _raw_spin_unlock_irqrestore+0x22/0x70 kernel/locking/spinlock.c:194   debug_object_activate+0x349/0x540 lib/debugobjects.c:726   debug_work_activate kernel/workqueue.c:578 [inline]   insert_work+0x30/0x230 kernel/workqueue.c:1650   __queue_work+0x62e/0x11d0 kernel/workqueue.c:1802   __queue_delayed_work+0x1bf/0x270 kernel/workqueue.c:1953   queue_delayed_work_on+0x106/0x130 kernel/workqueue.c:1989   queue_delayed_work include/linux/workqueue.h:563 [inline]   schedule_delayed_work include/linux/workqueue.h:677 [inline]   nsim_dev_trap_report_work+0x9c0/0xc80 drivers/net/netdevsim/dev.c:842   process_one_work+0x886/0x15d0 kernel/workqueue.c:2633   process_scheduled_works kernel/workqueue.c:2706 [inline]   worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787   kthread+0x2c6/0x3a0 kernel/kthread.c:388   ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147   ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242  </TASK>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | bpftool ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | bpftool ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | bpftool-debuginfo amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-debuginfo amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-devel amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-headers amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-libbpf amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-libbpf-devel amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-libbpf-static amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-livepatch-6.1.79-99.164 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-modules-extra amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-modules-extra-common amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-tools amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-tools-debuginfo amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-tools-devel amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | kernel-uek ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-container ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-container ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-container-debug ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-container-debug ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-core ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-core ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug-core ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug-core ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug-devel ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug-devel ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug-modules ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug-modules ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug-modules-extra ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-debug-modules-extra ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-devel ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-devel ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-doc ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-doc ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-modules ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-modules ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-modules-extra ol 8 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | kernel-uek-modules-extra ol 9 | 0:5.15.0-301.163.5.2.el9uek | [ELSA-2024-12796](https://patchblox.com/security/data/fix/linux/elsa-2024-12796.md) | Oct 20, 2024 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.82-1 | [DEBIAN-CVE-2024-26681](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26681.md) | Apr 2, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.7.7-1 | [DEBIAN-CVE-2024-26681](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26681.md) | Apr 2, 2024 |
| Linux | linux Debian 14 | 6.7.7-1 | [DEBIAN-CVE-2024-26681](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26681.md) | Apr 2, 2024 |
| Linux | perf amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | perf-debuginfo amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | python3-perf amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |
| Linux | python3-perf-debuginfo amzn 2023 | 6.1.79-99.164.amzn2023 | [ALAS2023-2024-549](https://patchblox.com/security/data/fix/linux/alas2023-2024-549.md) | Feb 29, 2024 |

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