CVE-2021-45261 Null dereference in n/a
An attacker can cause a denial of service in GNU patch via an invalid pointer in the another_hunk function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-45261?
CVE-2021-45261 is a medium-severity vulnerability in n/a, published on 22 Dec 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
An Invalid Pointer vulnerability exists in GNU patch 2.7 via the another_hunk function, which causes a Denial of Service.
Weakness: CWE-763
Which versions are affected by CVE-2021-45261?
It affects 1 product.
Linux distribution packages (7)
patch SUSE:Linux Enterprise Module for Basesystem 15 SP7 | All versions | 2.7.6-150000.5.9.1 |
patch SUSE:Linux Enterprise Server 16.0 | All versions | 2.7.6-160000.3.1 |
patch SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 2.7.6-160000.3.1 |
patch SUSE:Linux Micro 6.2 | All versions | 2.7.6-160000.3.1 |
patch openSUSE:Leap 15.6 | All versions | 2.7.6-150000.5.9.1 |
patch openSUSE:Leap 16.0 | All versions | 2.7.6-160000.3.1 |
patch openSUSE:Tumbleweed | All versions | 2.8-2.1 |
Products include Gnu Patch.
How do I fix CVE-2021-45261?
Apply the vendor's patch.
Is CVE-2021-45261 being exploited?
There is no known exploitation of CVE-2021-45261 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as CLSA-2026-1788355583, DEBIAN-CVE-2021-45261, ECHO-36a0-a7e1-89d6, GHSA-5wqw-cqhv-q8cv, ROOT-OS-DEBIAN-12-CVE-2021-45261, SUSE-SU-2026:0781-1 and 5 more.