CVE-2022-26495
nbd - security update
9.8
CRITICAL
CVSS 3.1
EPSS 0.18%
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.
How to fix CVE-2022-26495
To remediate CVE-2022-26495, upgrade the affected package to a fixed version below.
- —upgrade to 1:3.21-1+deb11u1 or later
- —upgrade to 1:3.15.2-3+deb9u1 or later
- —upgrade to 1:3.19-3+deb10u1 or later
Is CVE-2022-26495 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1:3.21-1+deb11u1
- from 0, < 1:3.15.2-3+deb9u1
- from 0, < 1:3.19-3+deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |