CVE-2007-4849
JFFS2, as used on One Laptop Per Child (OLPC) build 542 and possibly other Linux systems, when...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2007-4849- CVSS 2.0
- 4.4 Medium
AV:L/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2007-4849- Updated
- 2026-11-02
EUVDEUVD-2007-4830 No score
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.
- Record
EUVD-2007-4830- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-ffmh-3m8x-67m8 No score
JFFS2, as used on One Laptop Per Child (OLPC) build 542 and possibly other Linux systems, when...
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.
- Record
GHSA-ffmh-3m8x-67m8- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
linux-2.6Debian:4.0 From an advisory covering 5 CVEs |
before 2.6.18.dfsg.1-13etch3, plus listed versions 2.6.18.dfsg.1-122.6.18.dfsg.1-12etch12.6.18.dfsg.1-12etch22.6.18.dfsg.1-132.6.18.dfsg.1-13etch12.6.18.dfsg.1-13etch2 |
2.6.18.dfsg.1-13etch3 |
fai-kernelsDebian:4.0 From an advisory covering 5 CVEs |
before 1.17+etch.13etch3, plus listed versions 1.171.17+etch11.17+etch21.17+etch31.17+etch41.17+etch51.17etch1 |
1.17+etch.13etch3 |
user-mode-linuxDebian:4.0 From an advisory covering 5 CVEs |
before 2.6.18-1um-2etch.13etch3, plus listed versions 2.6.18-1um-22.6.18-1um-2etch12.6.18-1um-2etch22.6.18-1um-2etch32.6.18-1um-2etch4 |
2.6.18-1um-2etch.13etch3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| aliases | ||
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2007-4849 is a medium vulnerability (CVSS 4.4) in One Laptop Per Child Olpc Linux, published September 12, 2007. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 28th percentile. No source names a fixed version.