vulnwire
7.8high

CVE-2017-5669

The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operat…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
7.8
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 34%
Public exploits
0
none known

The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.

Exploit prediction (EPSS)

0.40% probability of exploitation in the next 30 days, higher than 34% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.17.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD2.04.6AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Technology feeds
Linux kernel (RSS, critical only)

References

  • usn.ubuntu.com /3583-2/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • usn.ubuntu.com /3583-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • securitytracker.com /id/1037918 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • securityfocus.com /bid/96754 · vdb-entry, x_refsource_BID, x_transferred
  • debian.org /security/2017/dsa-3804 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • bugzilla.kernel.org /show_bug.cgi?id=192931 · x_refsource_MISC, x_transferred
  • github.com /torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8 · x_refsource_MISC, x_transferred
  • github.com /torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7 · x_refsource_MISC, x_transferred

Sources

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