vulnwire
5.5med

CVE-2016-2383

The adjust_branches function in kernel/bpf/verifier.c in the Linux kernel before 4.5 does not consider the delta in the backward-jump case,…

Published 10 y ago · modified 4 mo ago · JSON

CVSS
5.5
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 32%
Public exploits
0
none known

The adjust_branches function in kernel/bpf/verifier.c in the Linux kernel before 4.5 does not consider the delta in the backward-jump case, which allows local users to obtain sensitive information from kernel memory by creating a packet filter and then loading crafted BPF instructions.

Exploit prediction (EPSS)

0.37% probability of exploitation in the next 30 days, higher than 32% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.15.5CVSS:3.1/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

Classification

Technology feeds
Linux kernel (RSS, critical only)

References

  • github.com /torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492 · x_refsource_CONFIRM, x_transferred
  • ubuntu.com /usn/USN-2947-3 · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • ubuntu.com /usn/USN-2947-2 · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • ubuntu.com /usn/USN-2947-1 · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • openwall.com /lists/oss-security/2016/02/14/1 · mailing-list, x_refsource_MLIST, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=1308452 · x_refsource_CONFIRM, x_transferred
  • git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383 · x_refsource_CONFIRM, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2016-04/msg00015.html · vendor-advisory, x_refsource_SUSE, x_transferred

Sources

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