CVE-2026-73071 — Vim: Use-after-free in JSON Decoding

Affected: vim

Vim is an open source, command line text editor. From 9.2.0511 until 9.2.0844, json_decode_item() in src/json.c can retain a stale pointer after json_decode_string() invokes channel_fill() to refill and free the current buffer, causing the error path to read freed memory instead of reader->js_buf + reader->js_used when an invalid JSON string spans buffers. This issue is fixed in version 9.2.0844.

USN-8657-1 — vim vulnerabilities

Affected: Ubuntu:Pro:14.04:LTS: vim, Ubuntu:Pro:16.04:LTS: vim, Ubuntu:Pro:18.04:LTS: vim, Ubuntu:Pro:20.04:LTS: vim, Ubuntu:22.04:LTS: vim, Ubuntu:24.04:LTS: vim, Ubuntu:26.04:LTS: vim

It was discovered that Vim incorrectly handled memory when decoding certain JSON input. An attacker could possibly use this issue to cause Vim to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-73071)

Yazan Balawneh discovered that Vim incorrectly handled memory when opening certain spell files. An attacker could possibly use this issue to cause Vim to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-73072)

It was discovered that Vim incorrectly handled memory when processing certain files with a large number of text properties. An attacker could possibly use this issue to cause Vim to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-73074)

It was discovered that Vim incorrectly handled certain vimball files. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-73076)

It was discovered that Vim incorrectly handled shell arguments during keyword lookups. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-73077)

David Carliez discovered that Vim incorrectly handled certain directory paths when constructing netrw menus. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-…

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CVE-2026-73071 — Vim: Use-after-free in JSON Decoding

USN-8657-1 — vim vulnerabilities