| Name | CVE-2016-9576 |
| Description | The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DLA-772-1 |
| NVD severity | high (attack range: local) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | jessie | 3.16.56-1+deb8u1 | fixed |
| jessie (security) | 3.16.68-2 | fixed | |
| stretch | 4.9.168-1 | fixed | |
| stretch (security) | 4.9.168-1+deb9u3 | fixed | |
| buster | 4.19.37-3 | fixed | |
| sid | 4.19.37-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | (unstable) | 4.8.15-1 | high | ||
| linux | source | jessie | 3.16.39-1 | high | ||
| linux | source | wheezy | 3.2.84-1 | high | DLA-772-1 |
https://marc.info/?l=linux-scsi&m=148010092224801&w=2
https://gist.githubusercontent.com/dvyukov/80cd94b4e4c288f16ee4c787d404118b/raw/10536069562444da51b758bb39655b514ff93b45/gistfile1.txt
Fixed by: https://git.kernel.org/linus/a0ac402cfcdc904f9772e1762b3fda112dcc56a0 (v4.9)