VulnerabilityModified
CVE-2022-26495
In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow.
CRITICAL 9.8EPSS 2.83%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.83%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.83% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- network block device project/network block device · debian/debian linux · fedoraproject/fedora
- Source
- cve@mitre.org
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.