CVE-2023-0597 — A flaw possibility of memory leak in the Linux kernel cpu_entry_area mapping of

A flaw possibility of memory leak in the Linux kernel cpu_entry_area mapping of X86 CPU data to memory was found in the way user can guess location of exception stack(s) or other important data. A local user could use this flaw to get access to some important data with expected l

01What is this vulnerability?

A flaw possibility of memory leak in the Linux kernel cpu_entry_area mapping of X86 CPU data to memory was found in the way user can guess location of exception stack(s) or other important data. A local user could use this flaw to get access to some important data with expected location in memory.

02Affected products

Vendor	Product	Versions
n	a / Kernel	Linux kernel 6.2-rc1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-02-23T00:00:00.000Z
• Last modified: 2025-03-12T19:17:33.462Z

09References

• git.kernel.org — https://git.kernel.org/linus/97e3d26b5e5f371b3ee223d94dd123e6c442ba80
• www.openwall.com — http://www.openwall.com/lists/oss-security/2023/07/28/1