| Name | CVE-2023-40551 |
| Description | A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3813-1 |
| Debian Bugs | 1061519 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| shim (PTS) | bullseye | 15.8-1~deb11u1 | fixed |
| bookworm | 16.1-2~deb12u1 | fixed | |
| trixie | 16.1-2~deb13u1 | fixed | |
| forky, sid | 16.1-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| shim | source | buster | 15.8-1~deb10u1 | DLA-3813-1 | ||
| shim | source | bullseye | 15.8-1~deb11u1 | |||
| shim | source | bookworm | 15.8-1~deb12u1 | |||
| shim | source | (unstable) | 15.8-1 | 1061519 |
https://bugzilla.redhat.com/show_bug.cgi?id=2259918
https://github.com/rhboot/shim/commit/5a5147d1e19cf90ec280990c84061ac3f67ea1ab (15.8)