Log in Start free

Vulnerability · Published Feb 1, 2021 · Assigned by mitre

CVE-2021-3348

High 7.0

In plain English

A high-severity security flaw in the kernel-tools-libs-devel package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.0High
Exploit odds (30 days)0.3%top 81.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8kernel-tools-libs-devel4.18.0-348.el8ALSA-2021:4356
Debian:12linux5.10.13-1DEBIAN-CVE-2021-3348
Debian:13linux5.10.13-1DEBIAN-CVE-2021-3348
Debian:14linux5.10.13-1DEBIAN-CVE-2021-3348
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-3348
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-3348
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-3348

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References