CVE-2023-46246

NameCVE-2023-46246
DescriptionVim is an improved version of the good old UNIX editor Vi. Heap-use-after-free in memory allocated in the function `ga_grow_inner` in in the file `src/alloc.c` at line 748, which is freed in the file `src/ex_docmd.c` in the function `do_cmdline` at line 1010 and then used again in `src/cmdhist.c` at line 759. When using the `:history` command, it's possible that the provided argument overflows the accepted value. Causing an Integer Overflow and potentially later an use-after-free. This vulnerability has been patched in version 9.0.2068.
SourceCVE (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 PackageReleaseVersionStatus
vim (PTS)buster2:8.1.0875-5+deb10u2vulnerable
buster (security)2:8.1.0875-5+deb10u6vulnerable
bullseye2:8.2.2434-3+deb11u1vulnerable
bookworm2:9.0.1378-2vulnerable
trixie2:9.1.0016-1fixed
sid2:9.1.0199-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
vimsource(unstable)2:9.0.2087-1unimportant

Notes

https://github.com/vim/vim/security/advisories/GHSA-q22m-h7m2-9mgm
https://github.com/vim/vim/commit/9198c1f2b1ddecde22af918541e0de2a32f0f45a (v9.0.2068)
Crash in CLI tool, no security impact

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