Answer in brief
CVE-2025-37992 records a Medium severity (CVSS 5.5) vulnerability in net_sched: Flush gso_skb list too during ->change(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <ea1132ccb112f51ba749c56a912f67970c2cd542 || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <d3336f746f196c6a53e0480923ae93939f047b6c || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <d38939ebe0d992d581acb6885c1723fa83c1fb2c || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <a7d6e0ac0a8861f6b1027488062251a8e28150fd || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <d1365ca80b012d8a7863e45949e413fb61fa4861 || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76 || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8 | ea1132ccb112f51ba749c56a912f67970c2cd542, d3336f746f196c6a53e0480923ae93939f047b6c, d38939ebe0d992d581acb6885c1723fa83c1fb2c, a7d6e0ac0a8861f6b1027488062251a8e28150fd, d1365ca80b012d8a7863e45949e413fb61fa4861, fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76, 2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8 |
| Linux/Linuxgeneric | 3.5 | Not reported |
Published upstream
May 26, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.