2151558 – (CVE-2022-4292) CVE-2022-4292 vim: use-after-free in did_set_spelllang() in src/spell.c

Bug 2151558 (CVE-2022-4292) - CVE-2022-4292 vim: use-after-free in did_set_spelllang() in src/spell.c

Summary: CVE-2022-4292 vim: use-after-free in did_set_spelllang() in src/spell.c

Keywords:
Status:	NEW
Alias:	CVE-2022-4292
Product:	Security Response
Classification:	Other
Component:	vulnerability
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	low
Severity:	low
Target Milestone:	---
Assignee:	Nobody
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:	2151559 2156271 2156272
Blocks:	2151568
TreeView+	depends on / blocked

Reported:	2022-12-07 13:56 UTC by Guilherme de Almeida Suckevicz
Modified:	2023-07-07 08:32 UTC (History)
CC List:	2 users (show)
Fixed In Version:	vim 9.0.0882
Doc Type:	If docs needed, set a value
Doc Text:	A heap use-after-free flaw was found in Vim's did_set_spelllang() function of the spell.c file. This issue occurs because vim uses freed memory after SpellFileMissing autocmd uses bwipe. This could allows an attacker to trick a user into opening a specially crafted file, triggering a heap use-after-free issue that causes an application to crash, possibly executing code and corrupting memory.
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description Guilherme de Almeida Suckevicz 2022-12-07 13:56:14 UTC

Use After Free in GitHub repository vim/vim prior to 9.0.0882.

Reference:
https://huntr.dev/bounties/da3d4c47-e57a-451e-993d-9df0ed31f57b

Upstream patch:
https://github.com/vim/vim/commit/c3d27ada14acd02db357f2d16347acc22cb17e93

Comment 1 Guilherme de Almeida Suckevicz 2022-12-07 13:56:28 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2151559]

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