Use After Free in Linux Kernel
CVE-2016-9576
The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device.
Vulnerability class: Use-After-Free
EPSS: 0.004 (35.8th 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
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2016-9576?
- CVE-2016-9576 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2016-12-28.
- How severe is CVE-2016-9576?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-9576 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.