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VULNERABILITIES

CVE-2021-3348 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258 CVEMailing ListPatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html CVEThird Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/28/3 CVEMailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/01/1 CVEMailing ListPatchThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258 [email protected]Mailing ListPatchVendor Advisory

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')[email protected]
CWE-416Use After Free[email protected]

Affected Products

ProductVersions
linux linux kernel
<= 5.10.12

CPE

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

Remediation

  • No remediation found in references.
debian debian linux
9.0

CPE

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

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-3348
NVD Published Date:
Feb 1, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-3348 Details - Not Deferred