Note:
This project will be discontinued after December 13, 2021. [more]
2018-04-02
The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.
Products | Linux_kernel |
Type | NULL Pointer Dereference (CWE-476) |
First patch | - None (likely due to unavailable code) |
Patches | https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=ce3fd194fcc6fbdc00ce095a852f22df97baa401 |
Links |
• https://bugzilla.kernel.org/show_bug.cgi?id=199185
• https://access.redhat.com/errata/RHSA-2018:2948 • http://openwall.com/lists/oss-security/2018/03/29/1 • https://bugzilla.redhat.com/show_bug.cgi?id=1560793 • https://usn.ubuntu.com/3695-1/ |