CVE-2018-6951
There is a segmentation fault, associated with a NULL pointer dereference, leading to a denial of service in the intuit_diff_type function in pch.c, aka a "mangled rename" issue.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in GNU patch through 2.7.6. There is a segmentation fault, associated with a NULL pointer dereference, leading to a denial of service in the intuit_diff_type function in pch.c, aka a "mangled rename" issue.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 8.36% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- gnu/patch · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS moved from 6.5% on 21 September 2026 to 8.4% on 27 October 2026, peaking at 8.4% on 22 September 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/103044Third Party Advisory, VDB Entry
- https://git.savannah.gnu.org/cgit/patch.git/commit/?id=f290f48a621867084884bfff87f8093c15195e6aPatch, Vendor Advisory
- https://savannah.gnu.org/bugs/index.php?53132Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/201904-17
- https://usn.ubuntu.com/3624-1/Third Party Advisory
- http://www.securityfocus.com/bid/103044Third Party Advisory, VDB Entry
- https://git.savannah.gnu.org/cgit/patch.git/commit/?id=f290f48a621867084884bfff87f8093c15195e6aPatch, Vendor Advisory
- https://savannah.gnu.org/bugs/index.php?53132Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/201904-17
- https://usn.ubuntu.com/3624-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.