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TI-2019-02538 Aliases CVE-2019-3016GHSA-g7mw-cr59-r458

Information disclosure in linux_kernel

Priority LOW 29CWE-200Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-200.

Summary

In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00619 49th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Linuxlinux_kernel4.10 to 5.6—No fix listedCNA
  • linux_kernel VendorLinux Affected 4.10 to 5.6 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.16VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.10:*:*:*:*:*:*:*4.10VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.16 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.10:*:*:*:*:*:*:* Versions 4.10 Vulnerable ·Linux

Remediation

Red Hat 2 advisories

  • RHSA-2020:3016 Released 2020-07-21 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-193.13.2.rt13.65.el8_2, kernel-rt-core-4.18.0-193.13.2.rt13.65.el8_2, kernel-rt-debug-4.18.0-193.13.2.rt13.65.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-193.13.2.rt13.65.el8_2, kernel-rt-core-4.18.0-193.13.2.rt13.65.el8_2, kernel-rt-debug-4.18.0-193.13.2.rt13.65.el8_2 +9
  • RHSA-2020:3010 Released 2020-07-21 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-193.13.2.el8_2
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-193.13.2.el8_2, kernel-4.18.0-193.13.2.el8_2, kernel-abi-whitelists-4.18.0-193.13.2.el8_2 +19

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2020:3010
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2020:3010
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2020:3016
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2020:3016
Not affected: 4 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise MRG 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-3016
  2. 2026-10-03 Alias added: GHSA-g7mw-cr59-r458

References

Patch 5

Advisory 5

Other 3

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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