Back
CVE-2004-0491
The linux-2.4.21-mlock.patch in Red Hat Enterprise Linux 3 does not properly maintain the mlock page count when one process unlocks pages…
- 2.1LowCVSS base score
- 0.36%Exploitation in 30 daysEPSS · top 70% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The linux-2.4.21-mlock.patch in Red Hat Enterprise Linux 3 does not properly maintain the mlock page count when one process unlocks pages that belong to another process, which allows local users to mlock more memory than specified by the rlimit.
Timeline
ID reserved
By mitre
- 9 months later
· 9 months later
Published
- 20 years later
· 20 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Low2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 0.36% · top 70% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.1.
Affected products
n/a
- affected n/a
References
7
- oval:org.mitre.oval:def:10672 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- oval:org.mitre.oval:def:1117 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 19607 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2005:472 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=126411 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [linux-kernel] 20040402 Re: disable-cap-mlock (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 13769 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2004-0490 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2004-0491)Record last updated .