CVE-2025-55157 — Vim heap use-after-free vulnerability when processing recursive tuple data types

Description

Vim is an open source, command line text editor. In versions from 9.1.1231 to before 9.1.1400, When processing nested tuples in Vim script, an error during evaluation can trigger a use-after-free in Vim’s internal tuple reference management. Specifically, the tuple_unref() function may access already freed memory due to improper lifetime handling, leading to memory corruption. The exploit requires direct user interaction, as the script must be explicitly executed within Vim. This issue has been patched in version 9.1.1400.

Affected products

Vendor	Product	Affected	Fixed
vim	vim	>= 9.1.1231, < 9.1.1400	—

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

SUSE

Security tracker ↗

Release	Package	Fixed in	Advisory
SLES 15 SP7	vim	9.1.1629-150500.20.33.1	SUSE-SU-2025:03300-1
SLES 15 SP6	vim	9.1.1629-150500.20.33.1	SUSE-SU-2025:03300-1
SLES 12 SP5	vim	9.1.1629-17.51.1	SUSE-SU-2025:03299-1

Show 7 more (older releases, extended support, other products)

Release	Package	Fixed in	Advisory
SLE Micro 6.1	vim	9.1.1629-slfo.1.1_1.1	SUSE-SU-2025:20857-1
SLE Micro 6.0	vim	9.1.1629-1.1	SUSE-SU-2025:20696-1
SLE Micro 5.5	vim	9.1.1629-150500.20.33.1	SUSE-SU-2025:03300-1
SLE Micro 5.4	vim	9.1.1629-150000.5.78.1	SUSE-SU-2025:03240-1
SLE Micro 5.3	vim	9.1.1629-150000.5.78.1	SUSE-SU-2025:03240-1
SLE Micro 5.2	vim	9.1.1629-150000.5.78.1	SUSE-SU-2025:03240-1
SLE Micro 5.1	vim	9.1.1629-150000.5.78.1	SUSE-SU-2025:03240-1

openSUSE