CVE-2016-10128: Buffer overflow in the git_pkt_parse_line function in transports/smart_pkt.c in the Git Smart Protocol support

Q: How do I fix CVE-2016-10128?

libgit2: upgrade to newer than 0.24.5. Exact commands for each OS are on this page.

Q: Is CVE-2016-10128 being exploited?

CVE-2016-10128 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2016-10128 affect?

CVE-2016-10128 affects libgit2. Severity is critical (CVSS 9.8). Buffer overflow in the git_pkt_parse_line function in transports/smart_pkt.c in the Git Smart Protocol support in libgit2 before 0.24.6 and 0.25.x before 0.25.1 allows remote attackers to have unspecified impact via a crafted non-flush pack

Q: How urgent is CVE-2016-10128?

Priority 67/100. Critical severity; EPSS top 10%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADE

CVE-2016-10128 is a critical-severity flaw (CVSS 9.8) affecting libgit2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the git_pkt_parse_line function in transports/smart_pkt.c in the Git Smart Protocol support in libgit2 before 0.24.6 and 0.25.x before 0.25.1 allows remote attackers to have unspecified impact via a crafted non-flush packet.

Why this priority

Critical severity
EPSS top 10%: very likely to be exploited
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	4.0% (top 10%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-03-24
Last modified	2026-06-17

Publisher (CNA): Debian GNU/Linux · Vendor: libgit2 project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-03-24 15:59 UTCPublished CVE record published
2026-06-17 00:39 UTCUpdated Record last modified

libgit2 project libgit2 UPGRADE

Affected: <= 0.24.5 · 0.25.0 · 0.25.0 rc1 · 0.25.0 rc2

Fixed in: newer than 0.24.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libgit2 || rpm -q libgit2 || libgit2 --version

2. UPGRADE to newer than 0.24.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libgit2

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libgit2

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2016-10128?

libgit2: upgrade to newer than 0.24.5. Exact commands for each OS are on this page.

Is CVE-2016-10128 being exploited?

CVE-2016-10128 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2016-10128 affect?

CVE-2016-10128 affects libgit2. Severity is critical (CVSS 9.8). Buffer overflow in the git_pkt_parse_line function in transports/smart_pkt.c in the Git Smart Protocol support in libgit2 before 0.24.6 and 0.25.x before 0.25.1 allows remote attackers to have unspecified impact via a crafted non-flush pack

How urgent is CVE-2016-10128?

Priority 67/100. Critical severity; EPSS top 10%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Git vulnerabilities

Related CVEs

CVE-2024-24577 HIGH 8.6 UPGRADE libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API
CVE-2024-24575 HIGH 7.5 UPGRADE libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API
CVE-2023-22742 MEDIUM 5.3 UPGRADE libgit2 is a cross-platform, linkable library implementation of Git
CVE-2020-12279 CRITICAL 9.8 UPGRADE MITIGATE An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0
CVE-2020-12278 CRITICAL 9.8 UPGRADE MITIGATE An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0

References

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