7.8

CVE-2019-11487: canonical ubuntu_linux Use After Free

Modified
AliasesSUSE-SU-2019:1768-1RHSA-2020:3266RHSA-2020:4182
Published 23-04-2019Last modified 04-08-2024

Vulnerability summary

CVE-2019-11487 is a high (CVSS 7.8) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 53.5% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.71%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2reference

Advisory lineage

Upstream 0 · Downstream 31 · Related 23
DLA-1919-1OPENSUSE-SU-2019:1571-1OPENSUSE-SU-2019:1579-1RHSA-2019:2703RHSA-2019:2741RHSA-2020:0174

Timeline

  1. 23-04-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests.

CVSS metrics

5 scores · 4 sources · 3 versions

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.71% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (bugs.chromium.org)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (lwn.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat27 products
  • kernel< 0:2.6.32-754.35.1.el6
  • kernel-debug< 0:2.6.32-754.35.1.el6
  • kernel-debug-debuginfo< 0:2.6.32-754.35.1.el6
  • kernel-debug-devel< 0:2.6.32-754.35.1.el6
  • kernel-debuginfo< 0:2.6.32-754.35.1.el6
Ubuntu26 products
  • linuxAll versions (No fix recorded) | < 4.4.0-165.193 | < 4.15.0-60.67
  • linux-aws< 4.4.0-1055.59 | < 4.4.0-1095.106 | < 4.15.0-1047.49
  • linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
  • linux-aws-hwe< 4.15.0-1047.49~16.04.1
  • linux-azure< 4.15.0-1059.64~14.04.1 | < 4.15.0-1056.61 | < 5.0.0-1014.14~18.04.1
Debian2 products
Canonical1 product
Linux1 product
  • linux_kernel< 4.4.216 | ≥ 4.5, < 4.9.181 | ≥ 4.10, < 4.14.116 | ≥ 4.15, < 4.19.39 | ≥ 4.20, < 5.0.12 | 5.1:rc1 | 5.1:rc2 | 5.1:rc3 | 5.1:rc4
Suse1 product
  • kgraft-patch-SLE12-SP3_Update_26&distro=SUSE Linux Enterprise Live Patching 12 SP3< 2-2.1

6 vendors · 58 products

References

49 links
Show all 49 references