What’s Vulnerable › Vulnerabilities

CVE-2018-8099

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-03-14 · updated 2026-06-17
• Weakness: CWE-415

Description

Incorrect returning of an error code in the index.c:read_entry() function leads to a double free in libgit2 before v0.26.2, which allows an attacker to cause a denial of service via a crafted repository index file.

Affected products

• Debian Linux: 9.0
• libgit2: before 0.26.2 — fixed in 0.26.2

How to fix

Upgrade to a fixed version: libgit2 0.26.2. Check the vendor advisory for mitigations.

References

• https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe
• https://libgit2.github.com/security/
• https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html
• https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe
• https://libgit2.github.com/security/
• https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html

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