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CVE-2019-3901· NVD / CVE Program· CNA redhat

A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs.

A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.

MediumCVSS 4.7 · v3.1—No exploit Fix available
Published
Apr 22, 2019
Updated
Jun 16, 2026
EPSS
0.3% · 25th percentile
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Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CNA vs NVD score

NVD
4.7
CNA · redhat
5.6
0.9 point gap

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

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Affected systems

VendorProduct
linuxlinux kernel
debiandebian linux
netappactive iq unified manager for vmware vsphere
netapphci management node
netappsnapprotect
netappsolidfire
netappstorage replication adapter for clustered data ontap for vmware vsphere
netappvasa provider for clustered data ontap
netappvirtual storage console for vmware vsphere
netappcn1610 firmware
netappcn1610

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux8.0
  • linux linux kernelbefore 4.8
  • netapp active iq unified manager for vmware vsphere9.5 and later
  • netapp cn1610 firmwareall versions
  • netapp hci management nodeall versions
  • netapp snapprotectall versions
  • netapp solidfireall versions
  • netapp storage replication adapter for clustered data ontap for vmware vsphere7.2 and later
  • netapp vasa provider for clustered data ontap7.2 and later
  • netapp virtual storage console for vmware vsphere7.2 and later

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • The Linux Foundation kernel

    • older then 4.8affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 4.6.1-14.6.1-1
Debian:8linuxbefore 3.16.68-13.16.68-1
Red Hat:rhel_eus:7.6::computenodebpftoolbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernelbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-abi-whitelistsbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-debugbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-debug-debuginfobefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-debug-develbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-debuginfobefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-debuginfo-common-x86_64before 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-develbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-docbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-toolsbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-tools-debuginfobefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-tools-libsbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodekernel-tools-libs-develbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodeperfbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodeperf-debuginfobefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodepython-perfbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::computenodepython-perf-debuginfobefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::serverkernel-bootwrapperbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::serverkernel-debuginfo-common-ppc64before 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::serverkernel-debuginfo-common-ppc64lebefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7
Red Hat:rhel_eus:7.6::serverkernel-debuginfo-common-s390xbefore 0:3.10.0-957.56.1.el70:3.10.0-957.56.1.el7

+46

Same product

linux: all records

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Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:linux4.6.1-1 · Debian:12Package registry (OSV)
red hat:kernel-rt0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-debug0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-debug-debuginfo0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-debug-devel0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-debug-kvm0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-debug-kvm-debuginfo0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-debuginfo0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-debuginfo-common-x86_640:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-devel0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-doc0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-kvm0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)
red hat:kernel-rt-kvm-debuginfo0:3.10.0-1127.rt56.1093.el7 · Red Hat:rhel_extras_rt:7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-667 · Improper Locking

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records