SARA / Free Tools / CVE / CVE-2018-16862

CVE-2018-16862 — A security flaw was found in the Linux kernel in a way that the cleancache subsy

A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (removal). The new file created with the same inode may contain leftover pages from cleancache and the old file data instead of the new one.

CVSS
5.3 MEDIUM
EPSS
0.03% (top 92.80%)
CWE
CWE-200
Published
2018-11-26T19:00:00.000Z
Last modified
2024-08-05T10:32:54.234Z
CVSS vector
CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N

01What is this vulnerability?

A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (removal). The new file created with the same inode may contain leftover pages from cleancache and the old file data instead of the new one.

02Affected products

VendorProductVersions
[UNKNOWN]kernel:n/a

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

05Technical details

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

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

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

09References

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