CVE-2022-36879

MEDIUMNVD 5.55.5—

5.5

An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 11.0%
KEV: Not listed

Published

July 27, 2022

Last Modified

May 5, 2025

References (12)

cve@mitrehttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=f85daf0e725358be78dfd208dea5fd665d8cb901
cve@mitrehttps://github.com/torvalds/linux/commit/f85daf0e725358be78dfd208dea5fd665d8cb901
cve@mitrehttps://lists.debian.org/debian-lts-announce/2022/09/msg00011.html
cve@mitrehttps://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
cve@mitrehttps://security.netapp.com/advisory/ntap-20220901-0007/
cve@mitrehttps://www.debian.org/security/2022/dsa-5207
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=f85daf0e725358be78dfd208dea5fd665d8cb901
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/f85daf0e725358be78dfd208dea5fd665d8cb901
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/09/msg00011.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220901-0007/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5207

Patch Availability(21)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-image-4.4.0-1117-aws (4.4.0-1117.123) @ trusty	2026-05-25	ubuntu
ubuntu	linux-headers-azure-fde (5.4.0.1092.97+cvm1.32) @ focal	2026-05-25	ubuntu
ubuntu	linux-tools-gke (4.15.0.1138.132) @ xenial	2026-05-25	ubuntu
ubuntu	linux-tools-4.4.0-239-lowlatency (4.4.0-239.273) @ xenial	2026-05-25	ubuntu
ubuntu	linux-tools-aws-hwe (4.15.0.1143.130) @ xenial	2026-05-25	ubuntu
ubuntu	linux-image-azure (4.15.0.1157.124) @ trusty	2026-05-25	ubuntu
ubuntu	linux-oem-22.04a (5.17.0.1028.26) @ jammy	2026-05-25	ubuntu
ubuntu	linux-tools-4.4.0-1155-aws (4.4.0-1155.170) @ xenial	2026-05-25	ubuntu
ubuntu	linux-modules-extra-gkeop-5.15 (5.15.0.1004.6) @ jammy	2026-05-25	ubuntu
ubuntu	linux-image-lowlatency (5.4.0.128.129) @ focal	2026-05-25	ubuntu
ubuntu	linux-image-raspi2-hwe-18.04 (5.4.0.1071.104) @ focal	2026-05-25	ubuntu
ubuntu	linux-headers-5.4.0-1086-aws (5.4.0-1086.93~18.04.1) @ bionic	2026-05-25	ubuntu
ubuntu	linux-image-unsigned-5.15.0-1015-ibm (5.15.0-1015.17) @ jammy	2026-05-25	ubuntu
ubuntu	linux-intel-iotg-headers-5.15.0-1017 (5.15.0-1017.22) @ jammy	2026-05-25	ubuntu
redhat	kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0	2024-01-25	redhat
redhat	kernel-0:5.14.0-70.85.1.el9_0	2024-01-25	redhat
redhat	kernel-0:4.18.0-372.75.1.el8_6	2023-10-10	redhat
redhat	kernel-0:4.18.0-477.10.1.el8_8	2023-05-16	redhat
redhat	kernel-rt-0:4.18.0-477.10.1.rt7.274.el8_8	2023-05-16	redhat
redhat	kernel-0:5.14.0-284.11.1.el9_2	2023-05-09	redhat
redhat	kernel-rt-0:5.14.0-284.11.1.rt14.296.el9_2	2023-05-09	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(22)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore

Frequently asked(5)

What is CVE-2022-36879?

CVE-2022-36879 is a medium vulnerability published on July 27, 2022. An issue was discovered in the Linux kernel through 5.18.14. xfrmexpandpolicies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice.

When was CVE-2022-36879 disclosed?

CVE-2022-36879 was first published in the National Vulnerability Database on July 27, 2022, with the most recent update on May 5, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-36879 actively exploited?

CVE-2022-36879 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-36879?

CVE-2022-36879 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2022-36879?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-36879, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2022-36879

📅 Published

🔄 Last Modified

🔗 References (12)

Patch Availability(21)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-36879?

🔗 Related CVEs(same vendor)

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Published

Last Modified

References (12)

Frequently asked(5)

Related CVEs(same vendor)