MEDIUM
CVE-2022-36879
NVD-CWE-OtherPublished: July 27, 2022· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2022-36879 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Debian1 product(s)
debian linux
Linux1 product(s)
linux kernel
netapp41 product(s)
a700s firmwarea700sactive iq unified managere-series santricity os controllerhci bootstrap osaff 8300 firmwareaff 8300fas 8300 firmwarefas 8300aff 8700 firmwareaff 8700fas 8700 firmware+29
Source: NVD CPE · 44 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (12)
→
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=f85daf0e725358be78dfd208dea5fd665d8cb901Mailing List · Patch · Third Party Advisory
→
https://github.com/torvalds/linux/commit/f85daf0e725358be78dfd208dea5fd665d8cb901Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/09/msg00011.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20220901-0007/Third Party Advisory
→
https://www.debian.org/security/2022/dsa-5207Third Party Advisory
→
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=f85daf0e725358be78dfd208dea5fd665d8cb901Mailing List · Patch · Third Party Advisory
→
https://github.com/torvalds/linux/commit/f85daf0e725358be78dfd208dea5fd665d8cb901Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/09/msg00011.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20220901-0007/Third Party Advisory
→
https://www.debian.org/security/2022/dsa-5207Third Party Advisory
Quick Facts
CVE IDCVE-2022-36879
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessNVD-CWE-Other
CISA KEVNo
Affected3 vendor(s)
PublishedJul 27, 2022
Related CVEs (NVD-CWE-Other)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-36879 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.