CVE-2016-6516
Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through 4.7 allows local users to cause a denial of service (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.95%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through 4.7 allows local users to cause a denial of service (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a "double fetch" vulnerability.
- CVSS 3.0
- 7.4 HIGHCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.95% probability · 59th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119, CWE-362
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20Patch
- http://www.openwall.com/lists/oss-security/2016/07/31/6Release Notes
- http://www.securityfocus.com/bid/92259
- https://bugzilla.redhat.com/show_bug.cgi?id=1362457Issue Tracking, Third Party Advisory, VDB Entry
- https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20Patch
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20Patch
- http://www.openwall.com/lists/oss-security/2016/07/31/6Release Notes
- http://www.securityfocus.com/bid/92259
- https://bugzilla.redhat.com/show_bug.cgi?id=1362457Issue Tracking, Third Party Advisory, VDB Entry
- https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.