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Fencer Intel
medium 4.7

CVE-2019-11190 json

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called t…

published 7y ago modified 4mo ago also EUVD-2019-2894

cvss
4.7
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 41%
public exploits
0
none known

Summary

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat.

Patch / fix

  • linux linux_kernel 4.8
  • linux Debian 14, Debian 13, Debian 12 4.8.5-1

debian advisories DEBIAN-CVE-2019-11190

  • linux Ubuntu 16.04 LTS 4.4.0-150.176
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1084.94
  • linux-kvm Ubuntu 16.04 LTS 4.4.0-1047.53
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1110.118
  • linux-snapdragon Ubuntu 16.04 LTS 4.4.0-1114.119
  • linux-snapdragon Ubuntu 18.04 LTS 4.15.0-1053.57
  • linux-aws Ubuntu Pro 14.04 LTS 4.4.0-1054.58
  • linux-fips Ubuntu Pro FIPS-updates 16.04 LTS 4.4.0-1011.14

ubuntu advisories UBUNTU-CVE-2019-11190

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 RHEL 7 3.10.0-1127.el7
  • perf RHEL 7 3.10.0-1127.el7
  • bpftool RHEL 7 3.10.0-1127.el7
  • python-perf RHEL 7 3.10.0-1127.el7
  • kernel-kdump RHEL 7 3.10.0-1127.el7
  • kernel-tools RHEL 7 3.10.0-1127.el7
  • kernel-tools-libs RHEL 7 3.10.0-1127.el7
  • kernel-bootwrapper RHEL 7 3.10.0-1127.el7

red hat advisories RHSA-2020:1016RHSA-2020:1070

  • kernel-ec2 SLE Module for Public Cloud 12 3.12.61-52.154.1
  • kernel-syms SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.114.1
  • kernel-source SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.114.1
  • kernel-default SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +3 more 4.4.121-92.114.1
  • kgraft-patch-SLE12-SP2_Update_30 SLES for SAP 12 SP2, SLES 12 SP2-LTSS, OpenStack Cloud 7 +1 more 1-3.5.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.115.1
  • kernel-syms SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 4.4.180-94.97.1
  • kernel-source SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 4.4.180-94.97.1

suse advisories SUSE-SU-2019:1692-1SUSE-SU-2019:14089-1SUSE-SU-2019:1534-1SUSE-SU-2019:1533-1SUSE-SU-2019:1532-1SUSE-SU-2019:1527-1

Is CVE-2019-11190 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-2019-11190 updated cvss 3.3

kernel: ASLR bypass for setuid binaries due to late install_exec_creds()

  • Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1127.el7, kernel 3.10.0-1127.el7, bpftool 3.10.0-1127.el7, python-perf 3.10.0-1127.el7, kernel-tools 3.10.0-1127.el7, kernel-tools-libs 3.10.0-1127.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1127.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-1127.el7, kernel 3.10.0-1127.el7, bpftool 3.10.0-1127.el7, python-perf 3.10.0-1127.el7, kernel-tools 3.10.0-1127.el7, kernel-tools-libs 3.10.0-1127.el7, +2 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1127.el7
    fixed: vendor fix RHSA-2020:1016
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1127.rt56.1093.el7, kernel-rt-trace 3.10.0-1127.rt56.1093.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1127.rt56.1093.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1127.rt56.1093.el7, kernel-rt-kvm 3.10.0-1127.rt56.1093.el7, kernel-rt-trace 3.10.0-1127.rt56.1093.el7, kernel-rt-debug-kvm 3.10.0-1127.rt56.1093.el7, kernel-rt-trace-kvm 3.10.0-1127.rt56.1093.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1127.rt56.1093.el7
    fixed: vendor fix RHSA-2020:1070
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1127.el7, kernel 3.10.0-1127.el7, bpftool 3.10.0-1127.el7, python-perf 3.10.0-1127.el7, kernel-kdump 3.10.0-1127.el7, kernel-tools 3.10.0-1127.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1127.el7, kernel-debuginfo-common-x86_64 3.10.0-1127.el7, kernel-debuginfo-common-ppc64le 3.10.0-1127.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1127.el7, kernel 3.10.0-1127.el7, bpftool 3.10.0-1127.el7, python-perf 3.10.0-1127.el7, kernel-tools 3.10.0-1127.el7, kernel-tools-libs 3.10.0-1127.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1127.el7
    fixed: vendor fix RHSA-2020:1016
  • 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, kernel-alt, python-perf, kernel-kdump, kernel-tools, +3 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    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

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • openwall.com https://www.openwall.com/lists/oss-security/2019/04/03/4 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com https://www.openwall.com/lists/oss-security/2019/04/03/4/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 4.7 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/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
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
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.