CVE-2025-37992

Katalog CVE

CVSS 5.5 · Medium EPSS 0,21%

Kerentanan NULL Pointer Dereference pada linux kernel, debian linux. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

26 Mei 2025

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

5.5 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-476: NULL Pointer Dereference

EPSS (30 hari)

0,21% peluang dieksploitasi; lebih tinggi dari 10,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8 patch
• https://git.kernel.org/stable/c/a7d6e0ac0a8861f6b1027488062251a8e28150fd patch
• https://git.kernel.org/stable/c/d1365ca80b012d8a7863e45949e413fb61fa4861 patch
• https://git.kernel.org/stable/c/d3336f746f196c6a53e0480923ae93939f047b6c patch
• https://git.kernel.org/stable/c/d38939ebe0d992d581acb6885c1723fa83c1fb2c patch
• https://git.kernel.org/stable/c/ea1132ccb112f51ba749c56a912f67970c2cd542 patch
• https://git.kernel.org/stable/c/fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76 patch
• https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html advisory pihak ketiga