vulnwire
5.5med

CVE-2018-1092

The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_c…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
5.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.9%
percentile 79%
Public exploits
0
none known

The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.

Exploit prediction (EPSS)

1.85% probability of exploitation in the next 30 days, higher than 79% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.05.5CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD2.07.1AV:N/AC:M/Au:N/C:N/I:N/A:C

Affected products

  • n/a Linux kernel through version 4.15

Classification

Weakness
Technology feeds
Linux kernel (RSS, critical only)

References

  • usn.ubuntu.com /3676-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • usn.ubuntu.com /3678-2/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • access.redhat.com /errata/RHSA-2018:3083 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • openwall.com /lists/oss-security/2018/03/29/1 · x_refsource_MISC, x_transferred
  • debian.org /security/2018/dsa-4187 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • usn.ubuntu.com /3678-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • usn.ubuntu.com /3677-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • debian.org /security/2018/dsa-4188 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • usn.ubuntu.com /3754-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • bugzilla.kernel.org /show_bug.cgi?id=199179 · x_refsource_MISC, x_transferred
  • access.redhat.com /errata/RHSA-2018:2948 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • usn.ubuntu.com /3678-3/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • usn.ubuntu.com /3677-2/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=1560777 · x_refsource_MISC, x_transferred
  • usn.ubuntu.com /3676-2/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • git.kernel.org /pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c · x_refsource_MISC, x_transferred
  • lists.debian.org /debian-lts-announce/2018/05/msg00000.html · mailing-list, x_refsource_MLIST, x_transferred
  • access.redhat.com /errata/RHSA-2018:3096 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • usn.ubuntu.com /3678-4/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • bugzilla.kernel.org /show_bug.cgi?id=199275 · x_refsource_MISC, 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.