NONE
CVE-2026-43089
Published: May 6, 2026· Updated: May 6, 2026
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.8th
Official Description
In the Linux kernel, the following vulnerability has been resolved:
xfrm_user: fix info leak in build_mapping()
struct xfrm_usersa_id has a one-byte padding hole after the proto
field, which ends up never getting set to zero before copying out to
userspace. Fix that up by zeroing out the whole structure before
setting individual variables.
Technical Analysis
CVE-2026-43089 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
Affected Vendors & Products
Mentioned vendors (from description):
Linux
CPE data not yet available in NVD for this CVE.
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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Rapid7 / Metasploit
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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.
All References (5)
Quick Facts
CVE IDCVE-2026-43089
SeverityNONE
CISA KEVNo
EPSS (30d)0.02%
PublishedMay 6, 2026
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-43089 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.COM. CVE data is provided under the NVD usage policy.