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 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.
Key facts
- CVSS score
- 4.4 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:L/AC:M/Au:N/C:P/I:P/A:P- Weakness (CWE)
- CWE-264
- EPSS score
- 0.3% (28th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2007-4830)
- Published
- September 12, 2007
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2007-4830 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- one laptop per child / olpc linux
References
- http://dev.laptop.org/ticket/2732
- http://git.infradead.org/?p=mtd-2.6.git%3Ba=commitdiff%3Bh=9ed437c50d89eabae763dd422579f73fdebf288d
- http://lists.infradead.org/pipermail/linux-mtd-cvs/2007-August/005897.html
- http://secunia.com/advisories/26978
- http://secunia.com/advisories/28170
- http://secunia.com/advisories/28706
- http://www.debian.org/security/2007/dsa-1378
- http://www.securityfocus.com/bid/25838
- http://www.ubuntu.com/usn/usn-558-1
- http://www.ubuntu.com/usn/usn-574-1
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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