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Fencer Vulns
medium 5.6

CVE-2019-7308 json

kernel/bpf/verifier.c in the Linux kernel before 4.20.6 performs undesirable out-of-bounds speculation on pointer arithmetic in various cas…

published 2019-02-01 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16852

cvss
5.6
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

kernel/bpf/verifier.c in the Linux kernel before 4.20.6 performs undesirable out-of-bounds speculation on pointer arithmetic in various cases, including cases of different branches with different state or limits to sanitize, leading to side-channel attacks.

Patch / fix

  • linux linux_kernel 4.19.19, 4.20.6
  • linux Debian 14, Debian 13, Debian 12 4.19.20-1

debian advisories DEBIAN-CVE-2019-7308

  • linux Ubuntu 18.04 LTS 4.15.0-47.50
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1035.37
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1029.31~16.04.1
  • linux-gcp Ubuntu 18.04 LTS 4.15.0-1029.31
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-47.50~16.04.1
  • linux-hwe Ubuntu 18.04 LTS 4.18.0-17.18~18.04.1
  • linux-kvm Ubuntu 18.04 LTS 4.15.0-1031.31
  • linux-oem Ubuntu 18.04 LTS 4.15.0-1035.40

ubuntu advisories UBUNTU-CVE-2019-7308

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-azure SLE Module for Public Cloud 15 4.12.14-5.24.1
  • kernel-syms-azure SLE Module for Public Cloud 15 4.12.14-5.24.1
  • kernel-source-azure SLE Module for Public Cloud 15 4.12.14-5.24.1
  • kernel-syms SLE Module for Development Tools 15 4.12.14-150.14.1
  • kernel-source SLE Module for Development Tools 15, SLE Module for Basesystem 15 4.12.14-150.14.1
  • kernel-default SLE Workstation Extension 15, SLE Module for Legacy 15, SLE Module for Basesystem 15 +2 more 4.12.14-150.14.2
  • kernel-vanilla SLE Module for Development Tools 15 4.12.14-150.14.2
  • kernel-zfcpdump SLE Module for Basesystem 15 4.12.14-150.14.2

suse advisories SUSE-SU-2019:0785-1SUSE-SU-2019:0784-1SUSE-SU-2019:0767-1SUSE-SU-2019:0765-1

  • kernel-syms openSUSE Leap 15.0 4.12.14-lp150.12.58.1
  • kernel-obs-qa openSUSE Leap 15.0 4.12.14-lp150.12.58.1
  • kernel-source openSUSE Leap 15.0 4.12.14-lp150.12.58.1
  • kernel-default openSUSE Leap 15.0 4.12.14-lp150.12.58.1
  • kernel-vanilla openSUSE Leap 15.0 4.12.14-lp150.12.58.1
  • kernel-kvmsmall openSUSE Leap 15.0 4.12.14-lp150.12.58.1
  • kernel-obs-build openSUSE Leap 15.0 4.12.14-lp150.12.58.1

opensuse advisories openSUSE-SU-2019:1193-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-7308 updated cvss 5.6

kernel: eBPF: Spectre v1 mitigation bypass

  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD 2.0 4.7 AV:L/AC:M/Au:N/C:C/I:N/A:N

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.