Use After Free in Linux Kernel
CVE-2017-11176
The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.
Vulnerability class: Use-After-Free
EPSS: 0.036 (88.4th percentile) — read the EPSS interpretation.
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.
Affected products
- Linux Linux_kernel
- Debian Debian_linux — versions 8.0, 9.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2017-11176?
- CVE-2017-11176 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2017-07-11.
- How severe is CVE-2017-11176?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-11176 known to be exploited?
- 53 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.