Use After Free in Linux Kernel
CVE-2017-6346
Race condition in net/packet/af_packet.c in the Linux kernel before 4.9.13 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a multithreaded application that makes PACKET_FANOUT setsockopt system calls.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (20.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/96508 (VDB Entry, Third Party Advisory, vdb-entry)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- source.android.com/security/bulletin/2017-09-01 (Third Party Advisory)
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.13 (Patch, Release Notes, Vendor Advisory)
- www.openwall.com/lists/oss-security/2017/02/28/6 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.debian.org/security/2017/dsa-3804 (vendor-advisory, Third Party Advisory)
- github.com/torvalds/linux/commit/d199fab63c11998a602205f7ee7ff7c05c97164b (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-6346?
- CVE-2017-6346 is a high-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.0/10. Published 2017-03-01.
- How severe is CVE-2017-6346?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2017-6346 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.