IT

Tracker / CVE-2025-38107

CVE-2025-38107

High 7.8

In the Linux kernel, the following vulnerability has been resolved: net_sched: ets: fix a race in ets_qdisc_change() Gerrard Tai reported a race condition in ETS, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.

Affected products and versions

debian debian_linux
linux linux_kernel
linux linux_kernel · 5.10.142 → 5.10.239
linux linux_kernel · 5.15.66 → 5.15.186
linux linux_kernel · 5.19.8 → 6.0
linux linux_kernel · 5.4.213 → 5.5
linux linux_kernel · 6.0.1 → 6.1.142
linux linux_kernel · 6.13 → 6.15.3
linux linux_kernel · 6.2 → 6.6.94
linux linux_kernel · 6.7 → 6.12.34

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References