5.5med

CVE-2017-7495

fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, whic…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
5.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 35%
Public exploits
0
none known

Summary

fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.

Exploit prediction (EPSS)

0.40% probability of exploitation in the next 30 days, higher than 35% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.05.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD2.02.1AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a Linux kernel before 4.6.2

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds
Linux kernel (RSS, critical only)

References

  • github.com /torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824 · x_refsource_CONFIRM, x_transferred
  • kernel.org /pub/linux/kernel/v4.x/ChangeLog-4.6.2 · x_refsource_CONFIRM, x_transferred
  • source.android.com /security/bulletin/2017-09-01 · x_refsource_CONFIRM, x_transferred
  • securityfocus.com /bid/98491 · vdb-entry, x_refsource_BID, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=1450261 · x_refsource_CONFIRM, x_transferred
  • openwall.com /lists/oss-security/2017/05/15/2 · x_refsource_CONFIRM, x_transferred
  • git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376 · 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.