Race condition in arch/x86/mm/tlb.c in the Linux kernel before 4.4.1 allows local users…
Priority LOW 32CWE-362Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 18 fixed, 2 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
Race condition in arch/x86/mm/tlb.c in the Linux kernel before 4.4.1 allows local users to gain privileges by triggering access to a paging structure by a different CPU.
Why it matters now
EPSS 0.00315 24th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 18 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 3 advisories
- RHSA-2017:0817 Released 2017-03-21 · Red Hat rating Moderatekernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-696.el6, kernel-abi-whitelists-2.6.32-696.el6, kernel-debug-2.6.32-696.el6 +6
- Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-696.el6
- Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-696.el6, kernel-abi-whitelists-2.6.32-696.el6, kernel-debug-2.6.32-696.el6 +6
- Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-696.el6
- Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-696.el6, kernel-abi-whitelists-2.6.32-696.el6, kernel-bootwrapper-2.6.32-696.el6 +9
- Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-696.el6
- Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-696.el6, kernel-abi-whitelists-2.6.32-696.el6, kernel-debug-2.6.32-696.el6 +6
- Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-696.el6
- RHSA-2016:2584 Released 2016-11-03 · Red Hat rating Importantkernel-rt security, bug fix, and enhancement update
- Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-514.rt56.420.el7, kernel-rt-debug-3.10.0-514.rt56.420.el7, kernel-rt-debug-devel-3.10.0-514.rt56.420.el7 +4
- Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-514.rt56.420.el7, kernel-rt-debug-3.10.0-514.rt56.420.el7, kernel-rt-debug-devel-3.10.0-514.rt56.420.el7 +7
- RHSA-2016:2574 Released 2016-11-03 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-514.el7, kernel-abi-whitelists-3.10.0-514.el7, kernel-debug-3.10.0-514.el7 +8
- Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-514.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-514.el7, kernel-abi-whitelists-3.10.0-514.el7, kernel-debug-3.10.0-514.el7 +8
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-514.el7
- Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-514.el7, kernel-abi-whitelists-3.10.0-514.el7, kernel-bootwrapper-3.10.0-514.el7 +11
- Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-514.el7, kernel-tools-libs-devel-3.10.0-514.el7
- Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-514.el7, kernel-abi-whitelists-3.10.0-514.el7, kernel-debug-3.10.0-514.el7 +8
- Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-514.el7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise MRG 2 | Affected | No fix yet |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2017:0817 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2017:0817 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2017:0817 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2017:0817 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2017:0817 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2017:0817 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2017:0817 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2017:0817 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux for Real Time (v. 7) | Fixed | RHSA-2016:2584 |
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) | Fixed | RHSA-2016:2584 |
Timeline
- 2026-10-02 Threatist record created from CVE-2016-2069
- 2026-10-03 Alias added: GHSA-c9rj-5983-h9qm
References
Advisory 15
Other 5
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- [oss-security] 20160124 CVE Request: x86 Linux TLB flush bug
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1301893
Sources
- CVE-2016-2069 · CVE Program
- CVE-2016-2069 · NVD
- FIRST EPSS
- GHSA-c9rj-5983-h9qm · GitHub Advisory Database · CC BY 4.0
- CVE-2016-2069 · Red Hat security data · CC BY 4.0
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