CVE-2022-26496: Buffer Overflow
First published: Sun Mar 06 2022(Updated: )
In nbd-server in nbd before 3.24, there is a stack-based buffer overflow. An attacker can cause a buffer overflow in the parsing of the name field by sending a crafted NBD_OPT_INFO or NBD_OPT_GO message with an large value as the length of the name.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/nbd | 1:3.19-3+deb10u1 1:3.21-1+deb11u1 1:3.24-1.1 1:3.25-1 | |
| Network Block Device Project Network Block Device | <3.24 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 | |
| Fedoraproject Fedora | =36 |
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Reference Links
- https://lists.debian.org/nbd/2022/01/msg00036.html
- https://lists.debian.org/nbd/2022/01/msg00037.html
- https://security-tracker.debian.org/tracker/CVE-2022-26496
- http://packetstormsecurity.com/files/172148/Shannon-Baseband-fmtp-SDP-Attribute-Memory-Corruption.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IZHR73XMAJTCFGKUZRXVTZKCK2X3IFNA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PU5JFD4PEJED72TZLZ5R2Q2SFXICU5I5/
- https://sourceforge.net/projects/nbd/files/nbd/
- https://www.debian.org/security/2022/dsa-5100
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZHR73XMAJTCFGKUZRXVTZKCK2X3IFNA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PU5JFD4PEJED72TZLZ5R2Q2SFXICU5I5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/
- https://security.gentoo.org/glsa/202402-10
Frequently Asked Questions
What is CVE-2022-26496?
CVE-2022-26496 is a vulnerability in nbd-server in nbd before version 3.24, which allows an attacker to cause a stack-based buffer overflow.
How does CVE-2022-26496 occur?
CVE-2022-26496 occurs due to a buffer overflow in the parsing of the name field in nbd-server, triggered by sending a crafted NBD_OPT_INFO or NBD_OPT_GO message with a large value as the length of the name.
What is the severity of CVE-2022-26496?
The severity of CVE-2022-26496 is critical, with a CVSS score of 9.8.
Which software versions are affected by CVE-2022-26496?
CVE-2022-26496 affects nbd versions before 3.24, as well as Debian Linux 10.0, Debian Linux 11.0, Fedora 34, Fedora 35, and Fedora 36.
How can CVE-2022-26496 be fixed?
To fix CVE-2022-26496, update nbd to version 3.24 or later, and apply any relevant security patches provided by the operating system.
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