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TI-2019-08579 Aliases CVE-2019-11487GHSA-vrxc-79fp-6683

The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with…

Priority LOW 35CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.00708 53rd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed Red Hat: 9 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 4.4.216; 4.5 to before 4.9.181; 4.10 to before 4.14.116; 4.15 to before 4.19.39; 4.20 to before 5.0.12VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.1:rc1:*:*:*:*:*:*5.1 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.1:rc2:*:*:*:*:*:*5.1 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.1:rc3:*:*:*:*:*:*5.1 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.1:rc4:*:*:*:*:*:*5.1 rc4VulnerableLinux
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*19.04VulnerableCanonical
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 4.4.216; 4.5 to before 4.9.181; 4.10 to before 4.14.116; 4.15 to before 4.19.39; 4.20 to before 5.0.12 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.1:rc1:*:*:*:*:*:* Versions 5.1 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.1:rc2:*:*:*:*:*:* Versions 5.1 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.1:rc3:*:*:*:*:*:* Versions 5.1 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.1:rc4:*:*:*:*:*:* Versions 5.1 rc4 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* Versions 19.04 Vulnerable ·Canonical

Remediation

Red Hat 9 advisories

  • RHSA-2020:4182 Released 2020-10-07 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-754.35.1.el6, kernel-debug-2.6.32-754.35.1.el6, kernel-debug-devel-2.6.32-754.35.1.el6
    • Red Hat Enterprise Linux Desktop Optional (v. 6)
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-754.35.1.el6, kernel-debug-2.6.32-754.35.1.el6, kernel-debug-devel-2.6.32-754.35.1.el6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6)
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-754.35.1.el6, kernel-debug-2.6.32-754.35.1.el6, kernel-debug-devel-2.6.32-754.35.1.el6 +2
    • Red Hat Enterprise Linux Server Optional (v. 6)
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-754.35.1.el6, kernel-debug-2.6.32-754.35.1.el6, kernel-debug-devel-2.6.32-754.35.1.el6
    • Red Hat Enterprise Linux Workstation Optional (v. 6)
  • RHSA-2020:3266 Released 2020-08-03 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.71.2.rt56.670.el6rt, kernel-rt-debug-1:3.10.0-693.71.2.rt56.670.el6rt, kernel-rt-debug-devel-1:3.10.0-693.71.2.rt56.670.el6rt +7
  • RHSA-2020:3230 Released 2020-07-29 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 7.4) kernel-3.10.0-693.71.2.el7, kernel-abi-whitelists-3.10.0-693.71.2.el7, kernel-debug-3.10.0-693.71.2.el7 +7
    • Red Hat Enterprise Linux Server E4S (v. 7.4) kernel-3.10.0-693.71.2.el7, kernel-abi-whitelists-3.10.0-693.71.2.el7, kernel-bootwrapper-3.10.0-693.71.2.el7 +8
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.71.2.el7
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.4) kernel-debug-devel-3.10.0-693.71.2.el7, kernel-tools-libs-devel-3.10.0-693.71.2.el7
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.71.2.el7
    • Red Hat Enterprise Linux Server TUS (v. 7.4) kernel-3.10.0-693.71.2.el7, kernel-abi-whitelists-3.10.0-693.71.2.el7, kernel-debug-3.10.0-693.71.2.el7 +7
Show 6 more Red Hat advisories
  • RHSA-2020:2851 Released 2020-07-07 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) bpftool-3.10.0-957.56.1.el7, kernel-3.10.0-957.56.1.el7, kernel-abi-whitelists-3.10.0-957.56.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) kernel-tools-libs-devel-3.10.0-957.56.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.6) bpftool-3.10.0-957.56.1.el7, kernel-3.10.0-957.56.1.el7, kernel-abi-whitelists-3.10.0-957.56.1.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) kernel-debug-devel-3.10.0-957.56.1.el7, kernel-tools-libs-devel-3.10.0-957.56.1.el7
    • Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUS kernel-devel-3.10.0-957.56.1.el7, perf-3.10.0-957.56.1.el7, python-perf-3.10.0-957.56.1.el7
  • RHSA-2020:0834 Released 2020-03-17 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1062.18.1.el7, kernel-3.10.0-1062.18.1.el7, kernel-abi-whitelists-3.10.0-1062.18.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1062.18.1.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-1062.18.1.el7, kernel-3.10.0-1062.18.1.el7, kernel-abi-whitelists-3.10.0-1062.18.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1062.18.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1062.18.1.el7, kernel-3.10.0-1062.18.1.el7, kernel-abi-whitelists-3.10.0-1062.18.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1062.18.1.el7, kernel-tools-libs-devel-3.10.0-1062.18.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1062.18.1.el7, kernel-3.10.0-1062.18.1.el7, kernel-abi-whitelists-3.10.0-1062.18.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1062.18.1.el7
  • RHSA-2020:0839 Released 2020-03-17 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-debug-3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-debug-devel-3.10.0-1062.18.1.rt56.1044.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-debug-3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-debug-devel-3.10.0-1062.18.1.rt56.1044.el7 +7
  • RHSA-2020:0174 Released 2020-01-21 · Red Hat rating Important
    kernel-alt security and bug fix update
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-115.17.1.el7a, kernel-abi-whitelists-4.14.0-115.17.1.el7a, kernel-alt-4.14.0-115.17.1.el7a +8
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-115.17.1.el7a, kernel-tools-libs-devel-4.14.0-115.17.1.el7a
  • RHSA-2019:2741 Released 2019-09-12 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-core-4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-debug-4.18.0-80.11.1.rt9.156.el8_0 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-core-4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-debug-4.18.0-80.11.1.rt9.156.el8_0 +9
  • RHSA-2019:2703 Released 2019-09-12 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-80.11.1.el8_0
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-80.11.1.el8_0, kernel-4.18.0-80.11.1.el8_0, kernel-abi-whitelists-4.18.0-80.11.1.el8_0 +21

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2019:2703
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2019:2703
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:0834
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:0834
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2020:0834
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6)Fixed RHSA-2020:2851
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:0834
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6)Fixed RHSA-2020:2851
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2020:4182
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2020:4182
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2020:4182
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2020:4182
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2019:2741
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2019:2741
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2020:0839
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2020:4182
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:0834
Red Hat Enterprise Linux Server AUS (v. 7.4)Fixed RHSA-2020:3230
Red Hat Enterprise Linux Server E4S (v. 7.4)Fixed RHSA-2020:3230
Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2020:2851
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2020:4182
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:0834
Red Hat Enterprise Linux Server Optional AUS (v. 7.4)Fixed RHSA-2020:3230
Red Hat Enterprise Linux Server Optional E4S (v. 7.4)Fixed RHSA-2020:3230
Red Hat Enterprise Linux Server Optional EUS (v. 7.6)Fixed RHSA-2020:2851
Red Hat Enterprise Linux Server Optional TUS (v. 7.4)Fixed RHSA-2020:3230
Red Hat Enterprise Linux Server TUS (v. 7.4)Fixed RHSA-2020:3230
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2020:4182
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:0834
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2020:4182
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:0834
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2020:0174
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2020:0174
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2020:0839
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2020:3266
Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUSFixed RHSA-2020:2851
Not affected: 15 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6)
  • Red Hat Enterprise Linux Desktop (v. 6)
  • Red Hat Enterprise Linux Desktop Optional (v. 6)
  • Red Hat Enterprise Linux HPC Node (v. 6)
  • Red Hat Enterprise Linux HPC Node Optional (v. 6)
  • Red Hat Enterprise Linux Server (v. 6)
  • Red Hat Enterprise Linux Server AUS (v. 7.4)
  • Red Hat Enterprise Linux Server E4S (v. 7.4)
  • Red Hat Enterprise Linux Server EUS (v. 7.6)
  • Red Hat Enterprise Linux Server Optional (v. 6)
  • Red Hat Enterprise Linux Server TUS (v. 7.4)
  • Red Hat Enterprise Linux Workstation (v. 6)
  • Red Hat Enterprise Linux Workstation Optional (v. 6)
  • Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUS

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-11487
  2. 2026-10-03 Alias added: GHSA-vrxc-79fp-6683

References

Exploit 2

Patch 10

Advisory 17

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences