CVE-2018-8098

Publication date 14 March 2018

Last updated 13 August 2026

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Description

Integer overflow in the index.c:read_entry() function while decompressing a compressed prefix length in libgit2 before v0.26.2 allows an attacker to cause a denial of service (out-of-bounds read) via a crafted repository index file.

Read the notes from the security team

Status

Package Ubuntu Release Status
libgit2 26.04 LTS resolute
Not affected
25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 0.26.0+dfsg.1-1.1ubuntu0.2+esm2
17.10 artful Ignored end of life
16.04 LTS xenial Ignored end of standard support, was needed
14.04 LTS trusty
Not affected

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Notes

msalvatore

Downgrading to low: "As the index is never transferred via the network, exploitation requires an attacker to have access to the local repository."

Severity score breakdown

CVSS version: CVSS v3.0

Base score 6.5 · Medium

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

References

Related Ubuntu Security Notices (USN)

    • USN-8628-1
    • libgit2 vulnerabilities
    • 12 August 2026

Other references

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