| Name | CVE-2026-48112 |
| Description | 7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain a heap out-of-bounds read in 7-Zip Ar handler BSD SYMDEF parser. A 4-byte heap out-of-bounds read exists in the Unix ar archive parser in 7-Zip. When parsing a BSD-style __.SYMDEF symbol table, the ParseLibSymbols function reads a 32-bit namesSize field via Get32 at a position that can equal the buffer size, reading 4 bytes past the end of the heap allocation. This reads uninitialized heap data under the default allocator. Version 26.01 patches the issue. |
| 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-4681-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| 7zip (PTS) | bookworm | 22.01+really26.01+dfsg-0+deb12u1 | fixed |
| trixie | 25.01+dfsg-1~deb13u2 | vulnerable | |
| forky, sid | 26.02+dfsg-2 | fixed | |
| p7zip (PTS) | bullseye | 16.02+dfsg-8 | vulnerable |
| bullseye (security) | 16.02+really26.01+dfsg-0+deb11u1 | fixed | |
| bookworm | 16.02+really26.01+dfsg-0+deb12u1 | fixed | |
| trixie | 16.02+transitional.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| 7zip | source | bookworm | 22.01+really26.01+dfsg-0+deb12u1 | |||
| 7zip | source | (unstable) | 26.01+dfsg-1 | |||
| p7zip | source | bullseye | 16.02+really26.01+dfsg-0+deb11u1 | DLA-4681-1 | ||
| p7zip | source | bookworm | 16.02+really26.01+dfsg-0+deb12u1 | |||
| p7zip | source | (unstable) | 16.02+transitional.1 |
[trixie] - 7zip <no-dsa> (Minor issue)
Since p7zip/16.02+transitional.1 src:p7zip is only a empty source package
depending on 7zip. Mark this version as fixed version.
https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/