CVE-2021-3348

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.

CVSS v3.0 7.0 HIGH
CVSS v2.0 4.4 MEDIUM

7.0^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.4^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 3.4 / Impact : 6.4

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258	Mailing List Patch Vendor Advisory
https://www.openwall.com/lists/oss-security/2021/01/28/3	Mailing List Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/01/1	Mailing List Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Information

Published : 2021-01-31 20:15

Updated : 2022-04-26 09:17

NVD link : CVE-2021-3348

Mitre link : CVE-2021-3348

JSON object : View

CWE

CWE-416

Use After Free

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Products Affected

debian

debian_linux

linux

linux_kernel

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