vulnwire
7.4high

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 o…

Published 10 y ago · modified 4 mo ago · JSON

CVSS
7.4
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.9%
percentile 61%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

0.95% probability of exploitation in the next 30 days, higher than 61% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.07.4CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.04.4AV:L/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
Technology feeds
Linux kernel (RSS, critical only)

References

  • github.com /torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20 · x_refsource_CONFIRM, x_transferred
  • securityfocus.com /bid/92259 · vdb-entry, x_refsource_BID, x_transferred
  • openwall.com /lists/oss-security/2016/07/31/6 · mailing-list, x_refsource_MLIST, x_transferred
  • git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420 · x_refsource_CONFIRM, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=1362457 · x_refsource_CONFIRM, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.