CVE-2019-20633
Published: 25 March 2020
GNU patch through 2.7.6 contains a free(p_line[p_end]) Double Free vulnerability in the function another_hunk in pch.c that can cause a denial of service via a crafted patch file. NOTE: this issue exists because of an incomplete fix for CVE-2018-6952.
Notes
| Author | Note |
|---|---|
| sbeattie | this issue was introduced by the fix for CVE-2018-6952, which has not been applied to any Ubuntu release, due to a complete fix not being available. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
patch Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Needs triage
|
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Needs triage
|
|
| kinetic |
Ignored
(end of life, was needs-triage)
|
|
| lunar |
Ignored
(end of life, was needs-triage)
|
|
| mantic |
Needs triage
|
|
| trusty |
Needs triage
|
|
| upstream |
Not vulnerable
(debian: Incomplete fix for CVE-2018-6952 not applied)
|
|
| xenial |
Needs triage
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |