CVE-2022-39260

Git vulnerable to Remote Code Execution via Heap overflow in `git shell`

HIGH

8.8

CVSS Score

Published: October 19, 2022 at 12:00 AM UTC

Updated: June 17, 2026 at 04:58 AM UTC

5 products affected across 5 vendorsDebian LinuxFedoraXcode

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Severity

HIGH8.8

Exploit prediction

EPSS 4%

Description

Git is an open source, scalable, distributed revision control system. `git shell` is a restricted login shell that can be used to implement Git's push/pull functionality via SSH. In versions prior to 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4, the function that splits the command arguments into an array improperly uses an `int` to represent the number of entries in the array, allowing a malicious actor to intentionally overflow the return value, leading to arbitrary heap writes. Because the resulting array is then passed to `execv()`, it is possible to leverage this attack to gain remote code execution on a victim machine. Note that a victim must first allow access to `git shell` as a login shell in order to be vulnerable to this attack. This problem is patched in versions 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 and users are advised to upgrade to the latest version. Disabling `git shell` access via remote logins is a viable short-term workaround.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Xcode · Apple

95%

v < 14.1

Affected range stops below 14.1, so it looks safe — our inference, not a vendor statement

Debian Linux · Debiandrupal

95%

10.0

Fedora · Fedora Projectrpm

95%

35 36 37

Git · Git Scm

95%

v < 2.30.62.31.0 ≤ v < 2.31.52.32.0 ≤ v < 2.32.42.33.0 ≤ v < 2.33.52.34.0 ≤ v < 2.34.52.35.0 ≤ v < 2.35.52.36.0 ≤ v < 2.36.32.37.0 ≤ v < 2.37.42.38.0

Affected range stops below 2.30.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.31.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.32.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.33.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.34.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.35.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.36.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.37.4, so it looks safe — our inference, not a vendor statement

Git · Gitrubygems

60%

v < 2.30.6v < 2.31.5v < 2.32.4v < 2.33.5v < 2.34.5v < 2.35.5v < 2.36.3v < 2.37.4