CVE-2007-4849 describes a permissions bypass vulnerability in JFFS2, specifically impacting One Laptop Per Child (OLPC) build 542 and potentially other Linux systems with POSIX ACL support enabled. The flaw arises from improper storage of permissions during inode creation or ACL setting, leading to inconsistencies between dentry and inode permissions after a filesystem remount. This local vulnerability, with medium attack complexity, could allow an unauthenticated attacker to access restricted files or directories, resulting in partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
build_542CPE matchmatch criteria | cpe:2.3:a:one_laptop_per_child:olpc_linux:build_542:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:L/AC:M/Au:N/C:P/I:P/A:P
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