CVEvulnerability
CVE-2021-3348
7.0 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-02-01
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 4.4 MEDIUM — AV:L/AC:M/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-362, CWE-416
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 configurations
• linux linux kernel (<= 5.10.12)
• debian debian linux 9.0
Related
References
- http://www.openwall.com/lists/oss-security/2021/02/01/1 Mailing List, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258 Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html Third Party 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258 Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/01/28/3 Mailing List, Patch, Third Party Advisory