High 7.8Published Jul 3, 2025

CVE-2025-38107net_sched: ets: fix a race in ets_qdisc_change()

Updated under an hour ago (Oct 28, 2026, 10:23 AM ET)

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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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Exploited in the last 30 days

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.

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

Affected products

Linux Linux linux:linux (from the name)	from 699d82e9a6db29d509a71f1f2f4316231e6232e6 before eb7b74e9754e1ba2088f914ad1f57a778b11894b; from ce881ddbdc028fb1988b66e40e45ca0529c23b46 before 0b479d0aa488cb478eb2e1d8868be946ac8afb4f; from b05972f01e7d30419987a1f221b5593668fd6448 before 347867cb424edae5fec1622712c8dd0a2c42918f; from b05972f01e7d30419987a1f221b5593668fd6448 before 0383b25488a545be168744336847549d4a2d3d6c; from b05972f01e7d30419987a1f221b5593668fd6448 before 073f64c03516bcfaf790f8edc772e0cfb8a84ec3; from b05972f01e7d30419987a1f221b5593668fd6448 before fed94bd51d62d2e0e006aa61480e94e5cd0582b0; from b05972f01e7d30419987a1f221b5593668fd6448 before d92adacdd8c2960be856e0b82acc5b7c5395fddb; fffa19b5e58c34004a0d6f642d9c24b11d213994; and 5 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 5.4.213 before 5.5; from 5.10.142 before 5.10.239; from 5.15.66 before 5.15.186; from 5.19.8 before 6.0; from 6.0.1 before 6.1.142; from 6.2 before 6.6.94; from 6.7 before 6.12.34; from 6.13 before 6.15.3; and 6 more ranges	NVD
debian debian_linux debian:debian_linux	11.0	NVD

References

References

https://git.kernel.org/stable/c/eb7b74e9754e1ba2088f914ad1f57a778b11894b	patch
https://git.kernel.org/stable/c/0b479d0aa488cb478eb2e1d8868be946ac8afb4f	patch
https://git.kernel.org/stable/c/347867cb424edae5fec1622712c8dd0a2c42918f	patch
https://git.kernel.org/stable/c/0383b25488a545be168744336847549d4a2d3d6c	patch
https://git.kernel.org/stable/c/073f64c03516bcfaf790f8edc772e0cfb8a84ec3	patch
https://git.kernel.org/stable/c/fed94bd51d62d2e0e006aa61480e94e5cd0582b0	patch
https://git.kernel.org/stable/c/d92adacdd8c2960be856e0b82acc5b7c5395fddb	patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	mailing-list, third-party-advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	mailing-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.