CVE-2024-41957 Vim double free in src/alloc.c:616

2024-08-0121:41:42

CWE-415

GitHub_M

www.cve.org

cve-2024-41957

vim

open source

command line text editor

double free

src/alloc.c

quickfix list

access exception

CVSS3

4.5

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

EPSS

Percentile

13.2%

JSON

Vim is an open source command line text editor. Vim < v9.1.0647 has double free in src/alloc.c:616. 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. The issue has been fixed as of Vim patch v9.1.0647

CNA Affected

[
  {
    "vendor": "vim",
    "product": "vim",
    "versions": [
      {
        "version": "< 9.1.0647",
        "status": "affected"
      }
    ]
  }
]