CVE-2026-46057

Unexpected audit logging via skipped credential copy

Published May 27, 2026 · Updated May 27, 2026

Improper credential inheritance in Linux Kernel 6.15 through 6.18.26 and 6.19 through 7.0.3 allows local users to create unexpected audit records. The Landlock hook_cred_transfer() path copies the credential security blob only when the parent credential has a domain, so a LOG_SUBDOMAINS_OFF flag set with ruleset_fd=-1 disappears when prepare_creds() runs for a child after fork(). Reachability requires a local process to mute descendant-domain logging before forking; affected children then emit audit records that the parent intended to suppress.

CVSS severity3.3
Low
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper credential inheritance in Linux Kernel 6.15 through 6.18.26 and 6.19 through 7.0.3 allows local users to create unexpected audit records. The Landlock hook_cred_transfer() path copies the credential security blob only when the parent credential has a domain, so a LOG_SUBDOMAINS_OFF flag set with ruleset_fd=-1 disappears when prepare_creds() runs for a child after fork(). Reachability requires a local process to mute descendant-domain logging before forking; affected children then emit audit records that the parent intended to suppress.

The record

CVE
CVE-2026-46057
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.15
  2. Affected versionversion=ead9079f75696a028aea8860787770c80eddb8f9 <1c513b8a00df13d231021e74ad92babb3fedf64a
  3. Affected versionversion=ead9079f75696a028aea8860787770c80eddb8f9 <2fcde49092aac55d5beef43fdd3633217672f7d1
  4. Affected versionversion=ead9079f75696a028aea8860787770c80eddb8f9 <874c8f83826c95c62c21d9edfe9ef43e5c346724

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.15; version=ead9079f75696a028aea8860787770c80eddb8f9 <1c513b8a00df13d231021e74ad92babb3fedf64a; version=ead9079f75696a028aea8860787770c80eddb8f9 <2fcde49092aac55d5beef43fdd3633217672f7d1; version=ead9079f75696a028aea8860787770c80eddb8f9 <874c8f83826c95c62c21d9edfe9ef43e5c346724

Published CVSS scores

3.3NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo