CVE-2022-26495

published 2022-03-06

CVE-2022-26495: In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will…

Priority P3 54 critical 9.8 CVSS 3.1

AV N AC L PR N UI N S U C H I H A H

In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue exists for the NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages.

Affected

12 ranges

Vendor	Product	Version range	Fixed in
debian	debian_linux	—	—
debian	debian_linux	—	—
debian	debian_linux	—	—
debian	nbd	< nbd 1:3.24-1 (bookworm)	nbd 1:3.24-1 (bookworm)
fedoraproject	fedora	—	—
fedoraproject	fedora	—	—
fedoraproject	fedora	—	—
network_block_device_project	network_block_device	< 3.24	3.24
wouter_verhelst	nbd	>= 0 < 1:3.21-1+deb11u1	1:3.21-1+deb11u1
wouter_verhelst	nbd	>= 0 < 1:3.24-1	1:3.24-1
wouter_verhelst	nbd	>= 0 < 1:3.24-1	1:3.24-1
wouter_verhelst	nbd	>= 0 < 1:3.24-1	1:3.24-1

CVSS provenance

nvd v3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 7.5 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P

osv 9.8 CRITICAL

vendor_debian 9.8 CRITICAL

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-190