CVE-2025-37992

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Source
https://cve.org/CVERecord?id=CVE-2025-37992
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37992.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-37992
Downstream
Related
Published
2025-05-26T14:54:15.796Z
Modified
2026-03-11T07:54:33.392577Z
Summary
net_sched: Flush gso_skb list too during ->change()
Details

In the Linux kernel, the following vulnerability has been resolved:

netsched: Flush gsoskb list too during ->change()

Previously, when reducing a qdisc's limit via the ->change() operation, only the main skb queue was trimmed, potentially leaving packets in the gso_skb list. This could result in NULL pointer dereference when we only check sch->limit against sch->q.qlen.

This patch introduces a new helper, qdiscdequeueinternal(), which ensures both the gsoskb list and the main queue are properly flushed when trimming excess packets. All relevant qdiscs (codel, fq, fqcodel, fq_pie, hhf, pie) are updated to use this helper in their ->change() routines.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37992.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
76e3cc126bb223013a6b9a0e2a51238d1ef2e409
Fixed
ea1132ccb112f51ba749c56a912f67970c2cd542
Fixed
d3336f746f196c6a53e0480923ae93939f047b6c
Fixed
d38939ebe0d992d581acb6885c1723fa83c1fb2c
Fixed
a7d6e0ac0a8861f6b1027488062251a8e28150fd
Fixed
d1365ca80b012d8a7863e45949e413fb61fa4861
Fixed
fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76
Fixed
2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37992.json"