CVE-2021-45261

mediumpriority · track · 22EPSS 0.008 · 55 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.76% (55th) EPSS

CVSS 4.3 · medium

Is it mine?

5 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

An Invalid Pointer vulnerability exists in GNU patch 2.7 via the another_hunk function, which causes a Denial of Service.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedpatch-0:2.7.6-150000.5.9.1.aarch64 as component of SUSE Linux Enterprise Module for Basesystem 15 SP7suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-150000.5.9.1.aarch64 as component of openSUSE Leap 15.6suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-150000.5.9.1.ppc64le as component of SUSE Linux Enterprise Module for Basesystem 15 SP7suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-150000.5.9.1.ppc64le as component of openSUSE Leap 15.6suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-150000.5.9.1.s390x as component of SUSE Linux Enterprise Module for Basesystem 15 SP7suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-150000.5.9.1.s390x as component of openSUSE Leap 15.6suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-150000.5.9.1.x86_64 as component of SUSE Linux Enterprise Module for Basesystem 15 SP7suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-150000.5.9.1.x86_64 as component of openSUSE Leap 15.6suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.aarch64 as component of SUSE Linux Micro 6.2suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.ppc64le as component of SUSE Linux Micro 6.2suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.s390x as component of SUSE Linux Micro 6.2suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.x86_64 as component of SUSE Linux Micro 6.2suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.aarch64 as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.aarch64 as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.ppc64le as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.ppc64le as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.s390x as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.s390x as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.x86_64 as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.x86_64 as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.8-2.1.aarch64 as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.8-2.1.ppc64le as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.8-2.1.s390x as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.8-2.1.x86_64 as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.aarch64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.ppc64le as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.s390x as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpatch-0:2.7.6-160000.3.1.x86_64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.3–5.5

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.13.3lowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Lsecondary · SUSE Product Security

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-763USprimary

affected products (5)

Products and version ranges known to be affected.

Open Source patchall versionscert_bundDEcpe:/a:gnu:patch:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
n/a n/a≤ n/aenisa_euvdEU
gnu patch= 2.7nvdUScpe:2.3:a:gnu:patch:*:*:*:*:*:*:*:*

advisories (6)

Vendor and ecosystem advisories describing this.

SUSE-SU-2026:0781-1Security update for patch2026-03-03csaf · suse_csafDE
Security update for patch
SUSE-SU-2026:20343-1Security update for patch2026-02-13csaf · suse_csafDE
Security update for patch
SUSE-SU-2026:20431-1Security update for patch2026-02-13csaf · suse_csafDE
Security update for patch
WID-SEC-W-2026-0304patch: Schwachstelle ermöglicht Denial of ServiceDeutsch2021-12-22csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in patch ausnutzen, um einen Denial of Service Angriff durchzuführen.
openSUSE-SU-2026:10140-1patch-2.8-2.1 on GA media2026-02-03csaf · suse_csafDE
patch-2.8-2.1 on GA media
openSUSE-SU-2026:20227-1Security update for patch2026-02-13csaf · suse_csafDE
Security update for patch

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd suse_csaf NVD CVE.org MITRE

published 2021-12-22modified 2026-06-17

related (171)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2013-4695US	high7.8	5.28% (93rd)	Exploit	2019-12-27
Winamp 5.63: Invalid Pointer Dereference leading to Arbitrary Code Execution
CVE-2022-23222US	high7.8	1.92% (80th)	Exploit	2022-01-14
kernel/bpf/verifier.c in the Linux kernel through 5.15.14 allows local users to gain privileges because of the availability of pointer arithmetic via certain *_OR_NULL pointer type…
CVE-2021-41073US	high7.8	1.77% (78th)	Exploit	2021-09-19
loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer,…
CVE-2026-31787US	high7.8	0.18% (8th)	Exploit	2026-04-30
In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fix double free via VMA splitting privcmd_vm_ops defines .close (privcmd_close), but neither .may…
CVE-2023-34312US	high7.8	0.60% (48th)	Exploit	2023-06-01
In Tencent QQ through 9.7.8.29039 and TIM through 3.4.7.22084, QQProtect.exe and QQProtectEngine.dll do not validate pointers from inter-process communication, which leads to a wri…

+166 more

references (4)

External citations — patches, advisories, analysis.

https://access.redhat.com/security/cve/cve-2021-45261 cnnvd
https://savannah.gnu.org/bugs/?61685 cnnvd
https://savannah.gnu.org/bugs/?61685 enisa_euvd
https://savannah.gnu.org/bugs/?61685ExploitIssue TrackingVendor Advisorynvd

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