UBUNTU-CVE-2016-7916
Race condition in the environ_read function in fs/proc/base.c in the Linux kernel before 4.5.4 allows local users to obtain sensitive information from kernel memory by reading a /proc/*/environ file during a process-setup time interval in which environment-variable copying is incomplete.
02 / AFFECTED SOFTWARE
Affected packages
102 explicit affected versions
37 explicit affected versions
7 explicit affected versions
26 explicit affected versions
8 explicit affected versions
3 explicit affected versions
44 explicit affected versions
38 explicit affected versions
43 explicit affected versions
10 explicit affected versions
26 explicit affected versions
51 explicit affected versions
78 explicit affected versions
6 explicit affected versions
12 explicit affected versions
1 explicit affected versions
1 explicit affected versions
23 explicit affected versions
7 explicit affected versions
7 explicit affected versions
8 explicit affected versions
7 explicit affected versions
1 explicit affected versions
1 explicit affected versions
24 explicit affected versions
61 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Race condition in the environ_read function in fs/proc/base.c in the Linux kernel before 4.5.4 allows local users to obtain sensitive information from kernel memory by reading a /proc/*/environ file during a process-setup time interval in which environment-variable copying is incomplete.
05 / REFERENCES
Further evidence
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8148a73c9901a8794a50f950083c00ccf97d43b3
- http://source.android.com/security/bulletin/2016-11-01.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4
- https://bugzilla.kernel.org/show_bug.cgi?id=116461
- https://forums.grsecurity.net/viewtopic.php?f=3&t=4363
- https://github.com/torvalds/linux/commit/8148a73c9901a8794a50f950083c00ccf97d43b3
- https://ubuntu.com/security/CVE-2016-7916
- https://ubuntu.com/security/notices/USN-3159-1
- https://ubuntu.com/security/notices/USN-3159-2
- https://ubuntu.com/security/notices/USN-3160-1
- https://ubuntu.com/security/notices/USN-3160-2
- https://www.cve.org/CVERecord?id=CVE-2016-7916