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Fencer Intel
high 7.8

CVE-2019-8912 json

In the Linux kernel through 4.20.11, af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which…

published 7y ago modified 4mo ago also EUVD-2019-18300

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

In the Linux kernel through 4.20.11, af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr.

Patch / fix

  • linux linux_kernel 4.14.103, 4.19.25, 4.20.12
  • linux Debian 14, Debian 13, Debian 12 4.19.28-1

debian advisories DEBIAN-CVE-2019-8912

  • 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-2019-8912

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-alt RHEL 7 4.14.0-115.17.1.el7a
  • perf RHEL 7 4.14.0-115.17.1.el7a
  • kernel RHEL 7 4.14.0-115.17.1.el7a
  • python-perf RHEL 7 4.14.0-115.17.1.el7a
  • kernel-tools RHEL 7 4.14.0-115.17.1.el7a
  • kernel-tools-libs RHEL 7 4.14.0-115.17.1.el7a
  • kernel-bootwrapper RHEL 7 4.14.0-115.17.1.el7a
  • kernel-abi-whitelists RHEL 7 4.14.0-115.17.1.el7a

red hat advisories RHSA-2020:0174

  • 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-2019:0845-1SUSE-SU-2019:0785-1SUSE-SU-2019:0784-1SUSE-SU-2019:0767-1SUSE-SU-2019:0765-1SUSE-SU-2019:0740-1

  • kernel-source openSUSE Tumbleweed 5.14.6-1.4
  • kernel-source openSUSE Tumbleweed 6.6.17-1.1
  • 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

opensuse advisories openSUSE-SU-2024:10728-1openSUSE-SU-2024:13704-1openSUSE-SU-2019:1193-1

  • linux Arch Linux 4.20.12.arch1-1

arch linux advisories AVG-989

Is CVE-2019-8912 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2019-8912 updated cvss 7.8

kernel: af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr

  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-115.17.1.el7a, kernel 4.14.0-115.17.1.el7a, kernel-alt 4.14.0-115.17.1.el7a, python-perf 4.14.0-115.17.1.el7a, kernel-tools 4.14.0-115.17.1.el7a, kernel-tools-libs 4.14.0-115.17.1.el7a, +3 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 4.14.0-115.17.1.el7a
    fixed: vendor fix RHSA-2020:0174
  • 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, python-perf, kernel-kdump, +8 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

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel 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.