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Fencer Vulns
medium 5.5

CVE-2019-10140 json

A vulnerability was found in Linux kernel's, versions up to 3.10, implementation of overlayfs.

published 2019-08-15 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-2179

cvss
5.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

A vulnerability was found in Linux kernel's, versions up to 3.10, implementation of overlayfs. An attacker with local access can create a denial of service situation via NULL pointer dereference in ovl_posix_acl_create function in fs/overlayfs/dir.c. This can allow attackers with ability to create directories on overlayfs to crash the kernel creating a denial of service (DOS).

Patch / fix

  • kernel RHEL 7 3.10.0-1062.el7
  • perf RHEL 7 3.10.0-1062.el7
  • bpftool RHEL 7 3.10.0-1062.el7
  • python-perf RHEL 7 3.10.0-1062.el7
  • kernel-kdump RHEL 7 3.10.0-1062.el7
  • kernel-tools RHEL 7 3.10.0-1062.el7
  • kernel-tools-libs RHEL 7 3.10.0-1062.el7
  • kernel-bootwrapper RHEL 7 3.10.0-1062.el7

red hat advisories RHSA-2019:2029RHSA-2019:2043

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-2019-10140 updated cvss 5.5

kernel: overlayfs: NULL pointer dereference in ovl_posix_acl_create function in fs/overlayfs/dir.c

  • Red Hat Enterprise Linux 7 perf, kernel, kernel-alt, python-perf, kernel-kdump, kernel-tools, +3 more
    affected: workaround, no fix planned “Some systems may wish to use device-mapper as an alternative to overlayfs. This does not remove the flaw if overlayfs module is still in use.”
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1062.el7, kernel 3.10.0-1062.el7, bpftool 3.10.0-1062.el7, python-perf 3.10.0-1062.el7, kernel-tools 3.10.0-1062.el7, kernel-tools-libs 3.10.0-1062.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1062.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-1062.el7, kernel 3.10.0-1062.el7, bpftool 3.10.0-1062.el7, python-perf 3.10.0-1062.el7, kernel-tools 3.10.0-1062.el7, kernel-tools-libs 3.10.0-1062.el7, +2 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1062.el7
    fixed: vendor fix “Some systems may wish to use device-mapper as an alternative to overlayfs. This does not remove the flaw if overlayfs module is still in use.” RHSA-2019:2029
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1062.rt56.1022.el7, kernel-rt-trace 3.10.0-1062.rt56.1022.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1062.rt56.1022.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1062.rt56.1022.el7, kernel-rt-kvm 3.10.0-1062.rt56.1022.el7, kernel-rt-trace 3.10.0-1062.rt56.1022.el7, kernel-rt-debug-kvm 3.10.0-1062.rt56.1022.el7, kernel-rt-trace-kvm 3.10.0-1062.rt56.1022.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1062.rt56.1022.el7
    fixed: vendor fix “Some systems may wish to use device-mapper as an alternative to overlayfs. This does not remove the flaw if overlayfs module is still in use.” RHSA-2019:2043
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1062.el7, kernel 3.10.0-1062.el7, bpftool 3.10.0-1062.el7, python-perf 3.10.0-1062.el7, kernel-kdump 3.10.0-1062.el7, kernel-tools 3.10.0-1062.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1062.el7, kernel-debuginfo-common-x86_64 3.10.0-1062.el7, kernel-debuginfo-common-ppc64le 3.10.0-1062.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1062.el7, kernel 3.10.0-1062.el7, bpftool 3.10.0-1062.el7, python-perf 3.10.0-1062.el7, kernel-tools 3.10.0-1062.el7, kernel-tools-libs 3.10.0-1062.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1062.el7
    fixed: vendor fix “Some systems may wish to use device-mapper as an alternative to overlayfs. This does not remove the flaw if overlayfs module is still in use.” RHSA-2019:2029
  • 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 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

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • OpenSource kernel:

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.