Tracker / CVE-2018-12233
CVE-2018-12233
High 7.8
In the ea_get function in fs/jfs/xattr.c in the Linux kernel through 4.17.1, a memory corruption bug in JFS can be triggered by calling setxattr twice with two different extended attribute names on the same file. This vulnerability can be triggered by an unprivileged user with the ability to create files and execute programs. A kmalloc call is incorrect, leading to slab-out-of-bounds in jfs_xattr.
Affected products and versions
| canonical | ubuntu_linux |
|---|---|
| linux | linux_kernel · 2.6.12 → 3.16.58 |
| linux | linux_kernel · 3.17 → 3.18.118 |
| linux | linux_kernel · 3.19 → 4.4.147 |
| linux | linux_kernel · 4.10 → 4.14.62 |
| linux | linux_kernel · 4.15 → 4.17.14 |
| linux | linux_kernel · 4.5 → 4.9.119 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.