CVE - CVE-2025-37992

CVE-ID
CVE-2025-37992	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: net_sched: Flush gso_skb 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, qdisc_dequeue_internal(), which ensures both the gso_skb list and the main queue are properly flushed when trimming excess packets. All relevant qdiscs (codel, fq, fq_codel, fq_pie, hhf, pie) are updated to use this helper in their ->change() routines.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8 URL:https://git.kernel.org/stable/c/2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8 MISC:https://git.kernel.org/stable/c/a7d6e0ac0a8861f6b1027488062251a8e28150fd URL:https://git.kernel.org/stable/c/a7d6e0ac0a8861f6b1027488062251a8e28150fd MISC:https://git.kernel.org/stable/c/d1365ca80b012d8a7863e45949e413fb61fa4861 URL:https://git.kernel.org/stable/c/d1365ca80b012d8a7863e45949e413fb61fa4861 MISC:https://git.kernel.org/stable/c/d3336f746f196c6a53e0480923ae93939f047b6c URL:https://git.kernel.org/stable/c/d3336f746f196c6a53e0480923ae93939f047b6c MISC:https://git.kernel.org/stable/c/d38939ebe0d992d581acb6885c1723fa83c1fb2c URL:https://git.kernel.org/stable/c/d38939ebe0d992d581acb6885c1723fa83c1fb2c MISC:https://git.kernel.org/stable/c/fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76 URL:https://git.kernel.org/stable/c/fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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