vulnerability

Alma Linux: CVE-2021-3348: Moderate: kernel security, bug fix, and enhancement update (ALSA-2021-4356)

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Severity

CVSS

(AV:L/AC:M/Au:N/C:P/I:P/A:P)

Published

Feb 1, 2021

Added

May 4, 2022

Modified

Mar 31, 2026

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.

Solution

alma-upgrade-kernel-tools-libs-devel

References

CVE-2021-3348
https://attackerkb.com/topics/CVE-2021-3348
CWE-362
CWE-416
EUVD-EUVD-2021-26679
https://errata.almalinux.org/8/ALSA-2021-4356.html
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-26679

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