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 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.

• CWE-190

• https://lists.debian.org/debian-lts-announce/2022/03/msg00014.htmlMailing List, Third Party Advisory
• https://lists.debian.org/nbd/2022/01/msg00037.htmlExploit, Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/
• 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://security.gentoo.org/glsa/202402-10
• https://sourceforge.net/projects/nbd/files/nbd/Product, Release Notes, Third Party Advisory
• https://www.debian.org/security/2022/dsa-5100Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2022/03/msg00014.htmlMailing List, Third Party Advisory
• https://lists.debian.org/nbd/2022/01/msg00037.htmlExploit, Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/
• 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://security.gentoo.org/glsa/202402-10
• https://sourceforge.net/projects/nbd/files/nbd/Product, Release Notes, Third Party Advisory
• https://www.debian.org/security/2022/dsa-5100Third Party Advisory

Published

Mar 6, 2022

Last Modified

Jun 17, 2026

Status

Modified

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