CVE-2021-3348

HIGH

Linux Kernel < 5.10.12 - Use-After-Free in nbd_add_socket

Title source: llm
STIX 2.1

Description

nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup, aka CID-b98e762e3d71.

References (4)

Core 4
Core References
Mailing List, Patch, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2021/01/28/3
Mailing List, Patch, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/02/01/1
Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html

Scores

CVSS v3 7.0
EPSS 0.0025
EPSS Percentile 16.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-362 CWE-416
Status published
Products (2)
debian/debian_linux 9.0
linux/linux_kernel < 5.10.12
Published Feb 01, 2021
Tracked Since Feb 18, 2026