| Name | CVE-2023-5215 |
| Description | A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function correctly. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libnbd (PTS) | bullseye | 1.6.1-1 | vulnerable |
| bookworm | 1.14.2-1 | vulnerable |
| sid, trixie | 1.20.3-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libnbd | source | (unstable) | 1.16.5-1 | | | |
Notes
[bookworm] - libnbd <no-dsa> (Minor issue)
[bullseye] - libnbd <no-dsa> (Minor issue)
https://listman.redhat.com/archives/libguestfs/2023-September/032635.html
Fixed by: https://gitlab.com/nbdkit/libnbd/-/commit/0f8ee8c6bd6dd93de771e6d4da87ec5a59504aae (v1.18.0)
Fixed by: https://gitlab.com/nbdkit/libnbd/-/commit/f03330181229360a1a97a264aa956fea54c657de (v1.16.5)