CVE-2022-49492

Katalog CVE

CVSS 5.5 · Medium EPSS 0,29%

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

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags In nvme_alloc_admin_tags, the admin_q can be set to an error (typically -ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which is checked immediately after the call. However, when we return the error message up the stack, to nvme_reset_work the error takes us to nvme_remove_dead_ctrl() nvme_dev_disable() nvme_suspend_queue(&dev->queues[0]). Here, we only check that the admin_q is non-NULL, rather than not an error or NULL, and begin quiescing a queue that never existed, leading to bad / NULL pointer dereference.

Rincian

Terbit di NVD

26 Februari 2025

Terakhir diubah

17 Juni 2026

Status NVD

Modified

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)

0,29% peluang dieksploitasi; lebih tinggi dari 20,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/54a4c1e47d1b2585e74920399455bd9abbfb2bd7 patch
• https://git.kernel.org/stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefc patch
• https://git.kernel.org/stable/c/8321b17789f614414206af07e17ce4751c95dc76 patch
• https://git.kernel.org/stable/c/8da2b7bdb47e94bbc4062a3978c708926bcb022c patch
• https://git.kernel.org/stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860 patch
• https://git.kernel.org/stable/c/9e649471b396fa0139d53919354ce1eace9b9a24 patch
• https://git.kernel.org/stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65 patch
• https://git.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929 patch
• https://git.kernel.org/stable/c/f76729662650cd7bc8f8194e057af381370349a7 patch