vulnwire
7.8high

CVE-2018-18445

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier per…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
7.8
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
0.5%
percentile 45%
Public exploits
0
none known

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.

Exploit prediction (EPSS)

0.54% probability of exploitation in the next 30 days, higher than 45% 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
NVD2.07.2AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
Technology feeds
Linux kernel (RSS, critical only)

References

  • cdn.kernel.org /pub/linux/kernel/v4.x/ChangeLog-4.18.13 · x_refsource_MISC, x_transferred
  • usn.ubuntu.com /3847-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • usn.ubuntu.com /3835-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • access.redhat.com /errata/RHSA-2019:0512 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • usn.ubuntu.com /3847-2/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • cdn.kernel.org /pub/linux/kernel/v4.x/ChangeLog-4.14.75 · x_refsource_MISC, x_transferred
  • usn.ubuntu.com /3832-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • github.com /torvalds/linux/commit/b799207e1e1816b09e7a5920fbb2d5fcf6edd681 · x_refsource_MISC, x_transferred
  • usn.ubuntu.com /3847-3/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • access.redhat.com /errata/RHSA-2019:0514 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • bugs.chromium.org /p/project-zero/issues/detail?id=1686 · x_refsource_MISC, x_transferred
  • git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd · x_refsource_MISC, x_transferred
  • support.f5.com /csp/article/K38456756 · x_refsource_CONFIRM, x_transferred

Sources

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