CVE-2024-45306

Name	CVE-2024-45306
Description	Vim is an open source, command line text editor. Patch v9.1.0038 optimized how the cursor position is calculated and removed a loop, that verified that the cursor position always points inside a line and does not become invalid by pointing beyond the end of a line. Back then we assumed this loop is unnecessary. However, this change made it possible that the cursor position stays invalid and points beyond the end of a line, which would eventually cause a heap-buffer-overflow when trying to access the line pointer at the specified cursor position. It's not quite clear yet, what can lead to this situation that the cursor points to an invalid position. That's why patch v9.1.0707 does not include a test case. The only observed impact has been a program crash. This issue has been addressed in with the patch v9.1.0707. All users are advised to upgrade.
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
vim (PTS)	jessie, jessie (lts)	2:7.4.488-7+deb8u11	fixed
	stretch (security)	2:8.0.0197-4+deb9u7	fixed
	stretch (lts), stretch	2:8.0.0197-4+deb9u11	fixed
	buster (security), buster, buster (lts)	2:8.1.0875-5+deb10u6	fixed
	bullseye	2:8.2.2434-3+deb11u1	fixed
	bookworm	2:9.0.1378-2	fixed
	trixie	2:9.1.0496-1	vulnerable
	sid	2:9.1.0709-1	fixed

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

Package	Type	Release	Fixed Version
vim	source	jessie	(not affected)
vim	source	stretch	(not affected)
vim	source	buster	(not affected)
vim	source	bullseye	(not affected)
vim	source	bookworm	(not affected)
vim	source	(unstable)	2:9.1.0709-1

Notes

[bookworm] - vim <not-affected> (Vulnerable code not present)
[bullseye] - vim <not-affected> (Vulnerable code not present)
https://github.com/vim/vim/security/advisories/GHSA-wxf9-c5gx-qrwr
Fixed by: https://github.com/vim/vim/commit/396fd1ec2956307755392a1c61f55d5c1847f308 (v9.1.0707)
[buster] - vim <not-affected> (Vulnerable code not present)
[stretch] - vim <not-affected> (Vulnerable code not present)
[jessie] - vim <not-affected> (Vulnerable code not present)