Critical severity · published Mar 6, 2022
CVE-2022-26495
In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow
9.8
CVSS
2.9%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.9% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0; 11.0 · source: NVD
FE
Fedora · Fedoraproject
34; 35; 36 · source: NVD
NB
Network Block Device · Network Block Device Project
before 3.24 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-26495
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-26495
Mailing List
https://lists.debian.org/debian-lts-announce/2022/03/msg00014.html
Exploit
https://lists.debian.org/nbd/2022/01/msg00037.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZHR73XMAJTCFGKUZRXVTZKCK2X3IFNA/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PU5JFD4PEJED72TZLZ5R2Q2SFXICU5I5/
security.gentoo.org
https://security.gentoo.org/glsa/202402-10
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