Threats / Linux / CVE-2022-2586
CVE-2022-2586
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Linux Kernel vulnerability
Linux Kernel use-after-free vulnerability in nft_object allows local attackers to escalate privileges.
Verdict
Today item — known-exploited.
A use-after-free flaw in the Linux Kernel's nft_object component enables local privilege escalation. The vulnerability has been exploited in the wild, posing active risk to systems where untrusted local users have access.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Public proof-of-concept exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
2 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-06-26).
Probability (EPSS)
EPSS 0.12746 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Linux, Kernel. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-416 Use After Free — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I gain local system access as an unprivileged user.
Business
An attacker establishes initial foothold on the system through compromised credentials or application vulnerability.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I trigger the use-after-free condition in nft_object through crafted netfilter operations.
Business
The vulnerability becomes exploitable when the attacker interacts with kernel netfilter subsystem components.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute arbitrary code with kernel privileges by corrupting memory state.
Business
Privilege escalation grants the attacker root-level control over the compromised system.
4
Data at risk — exfiltration narrative 4
Attacker
I maintain persistent access and move laterally across the infrastructure.
Business
Full system compromise enables data exfiltration, lateral movement, and establishment of persistent backdoors.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Disclosure & credit2
Catalogued by canonicalCNA
Credited with finding itTeam Orca of Sea Security (@seasecresponse) working with Trend Micro's Zero Day Initiativefinder