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Fencer Intel
high 7.3

CVE-2018-10877 json

Linux kernel ext4 filesystem is vulnerable to an out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4…

published 8y ago modified 4mo ago also EUVD-2018-2941

cvss
7.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

Linux kernel ext4 filesystem is vulnerable to an out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 4.17.3-1

debian advisories DEBIAN-CVE-2018-10877

  • linux Ubuntu 14.04 LTS 3.13.0-157.207
  • linux Ubuntu 16.04 LTS 4.4.0-134.160
  • linux Ubuntu 18.04 LTS 4.15.0-44.47
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1028.31
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1066.76
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1032.34
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1027.28~16.04.1
  • linux-gcp Ubuntu 18.04 LTS 4.15.0-1027.28

ubuntu advisories UBUNTU-CVE-2018-10877

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.el7a
  • perf RHEL 7 4.14.0-115.el7a
  • kernel RHEL 7 4.14.0-115.el7a
  • python-perf RHEL 7 4.14.0-115.el7a
  • kernel-tools RHEL 7 4.14.0-115.el7a
  • kernel-tools-libs RHEL 7 4.14.0-115.el7a
  • kernel-bootwrapper RHEL 7 4.14.0-115.el7a
  • kernel-abi-whitelists RHEL 7 4.14.0-115.el7a

red hat advisories RHSA-2018:2948

  • kernel-syms SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.95.1
  • kernel-source SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.95.1
  • lttng-modules SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 2.7.1-9.6.1
  • kernel-default SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +3 more 4.4.121-92.95.1
  • kgraft-patch-SLE12-SP2_Update_25 SLES for SAP 12 SP2, SLES 12 SP2-LTSS, OpenStack Cloud 7 +1 more 1-3.4.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.61-52.146.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.104.1
  • kernel-azure SLES for SAP 12 SP3, SLES 12 SP3 4.4.155-4.16.1

suse advisories SUSE-SU-2018:2908-2SUSE-SU-2018:3084-1SUSE-SU-2018:3083-1SUSE-SU-2018:2908-1SUSE-SU-2018:2858-1SUSE-SU-2018:2776-1

Is CVE-2018-10877 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-2018-10877 updated cvss 5.2

kernel: out-of-bound access in ext4_ext_drop_refs function with a crafted ext4 image

  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-115.el7a, kernel 4.14.0-115.el7a, kernel-alt 4.14.0-115.el7a, python-perf 4.14.0-115.el7a, kernel-tools 4.14.0-115.el7a, kernel-tools-libs 4.14.0-115.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.el7a
    fixed: vendor fix RHSA-2018:2948
  • 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-core, kernel-tools, python3-perf, +17 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

2.22% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 7.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD 3.0 6.5 CVSS:3.0/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • [UNKNOWN] kernel

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.