CVE-2007-4849
JFFS2, as used on One Laptop Per Child (OLPC) build 542 and possibly other Linux systems, when POSIX ACL support is enabled, does not…
- 4.4MediumCVSS base score
- 0.34%Exploitation in 30 daysEPSS · top 72% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
JFFS2, as used on One Laptop Per Child (OLPC) build 542 and possibly other Linux systems, when POSIX ACL support is enabled, does not properly store permissions during (1) inode creation or (2) ACL setting, which might allow local users to access restricted files or directories after a remount of a filesystem, related to "legacy modes" and an inconsistency between dentry permissions and inode permissions.
Timeline
ID reserved
By mitre
Published
- 17 years later
· 17 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 | Medium4.4 | AV:L/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 0.34% · top 72% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.4.
Affected products
n/a
- affected n/a
References
10
- [linux-mtd] 20070822 [JFFS2] Fix ACL vs. mode handling. (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 26978 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 28706 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 25838 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://git.infradead.org/?p=mtd-2.6.git%3Ba=commitdiff%3Bh=9ed437c50d89eabae763dd422579f73fdebf288d (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://dev.laptop.org/ticket/2732 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-558-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-574-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 28170 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-1378 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_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-2007-4830 (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-2007-4849)Record last updated .