CVE-2021-3348
HIGH
7
CVSS Score
Published: February 1, 2021 at 03:43 AM UTC
Updated: June 17, 2026 at 04:04 AM UTC
2 products affected across 2 vendorsLinux KernelDebian Linux
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Severity
HIGH7
Exploit prediction
EPSS 0.3%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v ≤ 5.10.12
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
Mailing Listx_refsource_MLISTPatchThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/02/01/1x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.htmlx_refsource_MISCMailing ListPatchThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2021/01/28/3CVSS
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-362CWE-416
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