Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
110bf2b764eb6026b868d84499263cb24b1bcc8d to < e70f5ee4c8824736332351b703c46f9469ed7f6caffected110bf2b764eb6026b868d84499263cb24b1bcc8d to < db45632479ceecb669612ed8dbce927e3c6279fcaffected110bf2b764eb6026b868d84499263cb24b1bcc8d to < ca60064ea03f14e06c763de018403cb56ba3207daffected110bf2b764eb6026b868d84499263cb24b1bcc8d to < 7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333baffected110bf2b764eb6026b868d84499263cb24b1bcc8d to < 6bc94f20a4c304997288f9a45278c9d0c06987d3affected110bf2b764eb6026b868d84499263cb24b1bcc8d to < 33e20747b47ddc03569b6bc27a2d6894c1428182affected110bf2b764eb6026b868d84499263cb24b1bcc8d to < 70fecd519caad0c1741c3379d5348c9000a5b29daffected110bf2b764eb6026b868d84499263cb24b1bcc8d to < b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70dfaffected
Linux Linux
Default version status: affected
2.6.31affected0 to < 2.6.31unaffected5.4.297 to ≤ 5.4.*unaffected5.10.241 to ≤ 5.10.*unaffected5.15.190 to ≤ 5.15.*unaffected6.1.147 to ≤ 6.1.*unaffected6.6.100 to ≤ 6.6.*unaffected6.12.40 to ≤ 6.12.*unaffected6.15.8 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/e70f5ee4c8824736332351b703c46f9469ed7f6c ↗
- https://git.kernel.org/stable/c/db45632479ceecb669612ed8dbce927e3c6279fc ↗
- https://git.kernel.org/stable/c/ca60064ea03f14e06c763de018403cb56ba3207d ↗
- https://git.kernel.org/stable/c/7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b ↗
- https://git.kernel.org/stable/c/6bc94f20a4c304997288f9a45278c9d0c06987d3 ↗
- https://git.kernel.org/stable/c/33e20747b47ddc03569b6bc27a2d6894c1428182 ↗
- https://git.kernel.org/stable/c/70fecd519caad0c1741c3379d5348c9000a5b29d ↗
- https://git.kernel.org/stable/c/b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗