CVE-2018-15501

libgit2-26: In ng_pkt in transports/smart_pkt.c in libgit2 before 0.26.6 and 0.27.x before 0.27.4, a remote attacker can send a c...

CVE-2018-15501 is fixed in libgit2-26 on 1 platform by libgit2-26 0.26.0+dfsg.1-1.1ubuntu0.2+esm2 (version 0.26.0+dfsg.1-1.1ubuntu0.2+esm2), released August 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0437
91st percentile

In ng_pkt in transports/smart_pkt.c in libgit2 before 0.26.6 and 0.27.x before 0.27.4, a remote attacker can send a crafted smart-protocol "ng" packet that lacks a '\0' byte to trigger an out-of-bounds read that leads to DoS.

Where it's fixed

ProductFixed inFixReleased
Linux
libgit2-26 · Ubuntu 18.04.6 LTS (bionic) 0.26.0+dfsg.1-1.1ubuntu0.2+esm2 libgit2-26 0.26.0+dfsg.1-1.1ubuntu0.2+esm2 Aug 14, 2026