Vulnerability · CVE-2025-38067
In the Linux kernel, the following vulnerability has been resolved: rseq: Fix segfault on registration when rseq_cs is non-zero The rseq_cs field is documented as being set to 0 by
Published Jun 18, 2025 · catalog updated Oct 15, 2026 · Linux Linux
Check this week
CVE-2025-38067 is not in CISA KEV. FIRST estimates a 57.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- None0.0
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 57.00%
- Remediation
- Version ranges on file
- Affected products
- vendor Linux Linux d7822b1e24f2df5df98c76f0e94a5416349ff759 <48900d839a3454050fd5822e34be8d54c4ec9b86
In the Linux kernel, the following vulnerability has been resolved: rseq: Fix segfault on registration when rseq_cs is non-zero The rseq_cs field is documented as being set to 0 by user-space prior to registration, however this is not currently enforced by the kernel. This can result in a segfault on return to user-space if the value stored in the rseq_cs field doesn't point to a valid struct rseq_cs. The correct solution to this would be to fail the rseq registration when the rseq_cs field is non-zero. However, some older versions of glibc will reuse the rseq area of previous threads without
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Linux Linux d7822b1e24f2df5df98c76f0e94a5416349ff759 <48900d839a3454050fd5822e34be8d54c4ec9b86d7822b1e24f2df5df98c76f0e94a5416349ff759 <48900d839a3454050fd5822e34be8d54c4ec9b86
How to fix CVE-2025-38067
Recommended remediation
Affected version ranges suggest a fixed boundary. Verify against the vendor advisory for your release.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2025-38067 is not in CISA KEV. FIRST estimates a 57.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.
Which versions are affected?
Compare what you have installed with Linux Linux d7822b1e24f2df5df98c76f0e94a5416349ff759 <48900d839a3454050fd5822e34be8d54c4ec9b86 d7822b1e24f2df5df98c76f0e94a5416349ff759 <48900d839a3454050fd5822e34be8d54c4ec9b86. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 57.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Jun 18, 2025 · EUVD
Detected
In the Linux kernel, the following vulnerability has been resolved: rseq: Fix segfault on registration when rseq_cs is non-zero The rseq_cs field is documented as being set to 0 by user-space prior to registration, however this is not currently enforced by the kernel. This can result in a segfault on return to user-space if the value stored in the rseq_cs field doesn't point to a valid struct rseq
Oct 15, 2026 · EUVD
Updated
In the Linux kernel, the following vulnerability has been resolved: rseq: Fix segfault on registration when rseq_cs is non-zero The rseq_cs field is documented as being set to 0 by user-space prior to registration, however this is not currently enforced by the kernel. This can result in a segfault on return to user-space if the value stored in the rseq_cs field doesn't point to a valid struct rseq
Sources
- EUVDVulnerability recordEUVD-2025-18586
In the Linux kernel, the following vulnerability has been resolved: rseq: Fix segfault on registration when rseq_cs is non-zero The rseq_cs field is documented as being set to 0 by user-space prior to registration, however this is not currently enforced by the kernel. This can re
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 15, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.