CVE-2016-4558

The BPF subsystem in the Linux kernel before 4.5.5 mishandles reference counts, which allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a crafted application on (1) a system with more than 32 Gb of memory, related to the program reference count or (2) a 1 Tb system, related to the map reference count.

CVSS v3.1 NVD

7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

6.9 MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS

0.86% chance of exploitation in the next 30 days, 58th percentile

Published

2016-05-23

Updated

2024-08-06

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/39773

Security advisories

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=92117d8443bc5af…
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5
• torvalds/linux/commit/92117d8443bc5afacc8d5ba82e541946310f106e
• http://www.openwall.com/lists/oss-security/2016/05/06/4
• http://www.ubuntu.com/usn/USN-3005-1
• http://www.ubuntu.com/usn/USN-3006-1
• http://www.ubuntu.com/usn/USN-3007-1
• https://bugzilla.redhat.com/show_bug.cgi?id=1334303

References

• CVE Record
• NVD entry