CVE-2025-38539tracing: Add down_write(trace_event_sem) when adding trace event
Updated under an hour ago ()
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It affects Linux and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: tracing: Add down_write(trace_event_sem) when adding trace event When a module is loaded, it adds trace events defined by the module. It may also need to modify the modules trace printk formats to replace enum names with their values. If two modules are loaded at the same time, the adding of the event to the ftrace_events list can corrupt the walking of the list in the code that is modifying the printk format strings and crash the kernel. The addition of the event should take the trace_event_sem for write while it adds the new event. Also add a lockdep_assert_held() on that semaphore in __trace_add_event_dirs() as it iterates the list.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from 110bf2b764eb6026b868d84499263cb24b1bcc8d before e70f5ee4c8824736332351b703c46f9469ed7f6c; from 110bf2b764eb6026b868d84499263cb24b1bcc8d before db45632479ceecb669612ed8dbce927e3c6279fc; from 110bf2b764eb6026b868d84499263cb24b1bcc8d before ca60064ea03f14e06c763de018403cb56ba3207d; from 110bf2b764eb6026b868d84499263cb24b1bcc8d before 7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b; 110bf2b764eb6026b868d84499263cb24b1bcc8d builds before 6bc94f20a4c304997288f9a45278c9d0c06987d3; 110bf2b764eb6026b868d84499263cb24b1bcc8d builds before 33e20747b47ddc03569b6bc27a2d6894c1428182; 110bf2b764eb6026b868d84499263cb24b1bcc8d builds before 70fecd519caad0c1741c3379d5348c9000a5b29d; from 110bf2b764eb6026b868d84499263cb24b1bcc8d before b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df | CNA record |
linux linux_kernel linux:linux_kernel | from 2.6.31 before 5.4.297; from 5.5 before 5.10.241; from 5.11 before 5.15.190; from 5.16 before 6.1.147; from 6.2 before 6.6.100; from 6.7 before 6.12.40; from 6.13 before 6.15.8; 6.16; and 5 more ranges | NVD |
debian debian_linux debian:debian_linux | 11.0 | NVD |
References
- https://git.kernel.org/stable/c/e70f5ee4c8824736332351b703c46f9469ed7f6cpatch
- https://git.kernel.org/stable/c/db45632479ceecb669612ed8dbce927e3c6279fcpatch
- https://git.kernel.org/stable/c/ca60064ea03f14e06c763de018403cb56ba3207dpatch
- https://git.kernel.org/stable/c/7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333bpatch
- https://git.kernel.org/stable/c/6bc94f20a4c304997288f9a45278c9d0c06987d3patch
- https://git.kernel.org/stable/c/33e20747b47ddc03569b6bc27a2d6894c1428182patch
- https://git.kernel.org/stable/c/70fecd519caad0c1741c3379d5348c9000a5b29dpatch
- https://git.kernel.org/stable/c/b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70dfpatch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlmailing-list, third-party-advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlmailing-list, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.