CVE-2007-4849

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.

Category

4.4
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.04%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.infradead.org/pipermail/linux-mtd-cvs/2007-August/005897.html mailing list
http://secunia.com/advisories/26978 third party advisory
http://secunia.com/advisories/28706 third party advisory
http://www.securityfocus.com/bid/25838 vdb entry
http://git.infradead.org/?p=mtd-2.6.git%3Ba=commitdiff%3Bh=9ed437c50d89eabae763dd422579f73fdebf288d
http://dev.laptop.org/ticket/2732
http://www.ubuntu.com/usn/usn-558-1 vendor advisory
http://www.ubuntu.com/usn/usn-574-1 vendor advisory
http://secunia.com/advisories/28170 third party advisory
http://www.debian.org/security/2007/dsa-1378 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2007-4849?
CVE-2007-4849 has been scored as a medium severity vulnerability.
How to fix CVE-2007-4849?
To fix CVE-2007-4849, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2007-4849 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2007-4849 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.