Bug 937126 (CVE-2024-41957, CVE-2024-41965)

Summary:	app-editors/vim: multiple vulnerabilities
Product:	Gentoo Security	Reporter:	Christopher Fore <csfore>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	CONFIRMED ---
Severity:	normal	CC:	proxy-maint, vim, xxc3ncoredxx
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://github.com/vim/vim/security/advisories/GHSA-f9cr-gv85-hcr4
Whiteboard:	A3 [ebuild]
Package list:		Runtime testing required:	---

Description Christopher Fore 2024-08-02 13:40:39 UTC

CVE-2024-41957 (https://github.com/vim/vim/security/advisories/GHSA-f9cr-gv85-hcr4):

When closing a window, the corresponding tagstack data will be cleared
and freed. However a bit later, the quickfix list belonging to that
window will also be cleared and if that quickfix list points to the same
tagstack data, Vim will try to free it again, resulting in a
double-free/use-after-free access exception.

Impact is low since the user must intentionally execute vim with several non-default flags, but it may cause a crash of Vim.


CVE-2024-41965 (https://github.com/vim/vim/security/advisories/GHSA-46pw-v7qw-xc2f):

When abandoning a buffer, Vim may ask the user what to do with the
modified buffer. If the user wants the changed buffer to be saved, Vim
may create a new Untitled file, if the buffer did not have a name yet.

However, when setting the buffer name to Unnamed, Vim will falsely free
a pointer twice, leading to a double-free and possibly later to a
heap-use-after-free, which can lead to a crash.



The above are both fixed in v9.1.0648.