CVE-2025-37913 — Double Free in Linux
CWE-415 — Double FreeCWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition69 documents8 sources
Severity
7.8HIGHNVD
OSV8.8OSV3.2
EPSS
0.1%
top 75.37%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMay 20
Latest updateMar 25
Description
In the Linux kernel, the following vulnerability has been resolved:
net_sched: qfq: Fix double list add in class with netem as child qdisc
As described in Gerrard's report [1], there are use cases where a netem
child qdisc will make the parent qdisc's enqueue callback reentrant.
In the case of qfq, there won't be a UAF, but the code will add the same
classifier to the list twice, which will cause memory corruption.
This patch checks whether the class was already added to the agg->active
list …
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages4 packages
▶CVEListV5linux/linux37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea — 041f410aec2c1751ee22b8b73ba05d38c3a6a602+8
Also affects: Debian Linux 11.0