Use After Free in Linux Kernel
CVE-2016-8655
Race condition in net/packet/af_packet.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging the CAP_NET_RAW capability to change a socket version, related to the packet_set_ring and packet_setsockopt functions.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.111 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.111 · newest: 0.111 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ubuntu.com/usn/USN-3151-3 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00044.html (vendor-advisory, Mailing List, Third Party Advisory)
- github.com/torvalds/linux/commit/84ac7260236a49c79eede91617700174c2c19b0c (Patch, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00077.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00067.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.ubuntu.com/usn/USN-3150-2 (vendor-advisory, Third Party Advisory)
- www.ubuntu.com/usn/USN-3149-2 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/94692 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1037968 (VDB Entry, Third Party Advisory, vdb-entry)
- www.ubuntu.com/usn/USN-3150-1 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-8655?
- CVE-2016-8655 is a high-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.8/10. Published 2016-12-08.
- How severe is CVE-2016-8655?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-8655 known to be exploited?
- 67 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.