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NVD / CVE Program· CNA Linux

CVE-2024-39499: vmci: prevent speculation leaks by sanitizing event in event_deliver()

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.29% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81, 681967c4ff210e06380acf9b9a1b33ae06e77cbd, 757804e1c599af5d2a7f864c8e8b2842406ff4bb.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81, 681967c4ff210e06380acf9b9a1b33ae06e77cbd, 757804e1c599af5d2a7f864c8e8b2842406ff4bb or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: vmci: prevent speculation leaks by sanitizing event in event_deliver() Coverity spotted that event_msg is controlled by user-space, event_msg->event_data.event is passed to event_deliver() and used as an index without sanitization. This change ensures that the event index is sanitized to mitigate any possibility of speculative information leaks. This bug was discovered and resolved using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc. Only compile tested, no access to HW.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Jul 12, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 22th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

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

  • linux linux kernel3.9 and later · before 4.19.317
  • linux linux kernel4.20 and later · before 5.4.279
  • linux linux kernel5.5 and later · before 5.10.221
  • linux linux kernel5.11 and later · before 5.15.162
  • linux linux kernel5.16 and later · before 6.1.95
  • linux linux kernel6.2 and later · before 6.6.35
  • linux linux kernel6.7 and later · before 6.9.6

Versions reported by the vendor

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

  • Linux Linux

    • 3.9affected
    • 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a and later · before 58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81affected · git
    • 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a and later · before 681967c4ff210e06380acf9b9a1b33ae06e77cbdaffected · git
    • 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a and later · before f70ff737346744633e7b655c1fb23e1578491ff3affected · git
    • 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a and later · before 95ac3e773a1f8da83c4710a720fbfe80055aafaeaffected · git
    • 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a and later · before 95bac1c8bedb362374ea1937b1d3e833e01174eeaffected · git
    • 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a and later · before e293c6b38ac9029d76ff0d2a6b2d74131709a9a8affected · git
    • 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a and later · before 757804e1c599af5d2a7f864c8e8b2842406ff4bbaffected · git
    • 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a and later · before 8003f00d895310d409b2bf9ef907c56b42a4e0f4affected · git
    • before 3.9not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.99-16.1.99-1
Debian:13linuxbefore 6.9.7-16.9.7-1
Red Hat:rhel_eus:9.4::appstreambpftool-debuginfobefore 0:7.3.0-427.49.1.el9_40:7.3.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-debuginfobefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-develbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-devel-matchedbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debuginfobefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-develbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-devel-matchedbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-debuginfobefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-develbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-devel-matchedbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfobefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-aarch64before 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-ppc64lebefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-s390xbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-x86_64before 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-develbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-devel-matchedbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-docbefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-rt-debug-debuginfobefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-rt-debuginfobefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-tools-debuginfobefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-zfcpdump-debuginfobefore 0:5.14.0-427.49.1.el9_40:5.14.0-427.49.1.el9_4

+56

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-39497Jul 12, 2024 · drm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)
    22Monitor
  • ← EarlierCVE-2024-39498Jul 12, 2024 · drm/mst: Fix NULL pointer dereference at drm_dp_add_payload_part2
    22Monitor
  • Later →CVE-2024-39500Jul 12, 2024 · sock_map: avoid race between sock_map_close and sk_psock_put
    18Monitor

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
Linux Linux58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81Vendor (CNA)
Linux Linux681967c4ff210e06380acf9b9a1b33ae06e77cbdVendor (CNA)
Linux Linux757804e1c599af5d2a7f864c8e8b2842406ff4bbVendor (CNA)
Linux Linux8003f00d895310d409b2bf9ef907c56b42a4e0f4Vendor (CNA)
Linux Linux95ac3e773a1f8da83c4710a720fbfe80055aafaeVendor (CNA)
Linux Linux95bac1c8bedb362374ea1937b1d3e833e01174eeVendor (CNA)
Linux Linuxe293c6b38ac9029d76ff0d2a6b2d74131709a9a8Vendor (CNA)
Linux Linuxf70ff737346744633e7b655c1fb23e1578491ff3Vendor (CNA)
debian:linux6.1.99-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.3.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-427.49.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage 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.

No history yet (it accumulates with the daily EPSS job).

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.

  • CVE-2025-22069278 days apartriscv: fgraph: Fix stack layout to match __arch_ftrace_regs argument of ftrace_return_to_handler
    31Monitor
  • CVE-2022-4875722 days apartnet: fix information leakage in /proc/net/ptype
    28Monitor
  • CVE-2024-4388139 days apartwifi: ath12k: change DMA direction while mapping reinjected packets
    28Monitor
  • CVE-2024-3603243 days apartBluetooth: qca: fix info leak when fetching fw build id
    28Monitor
  • CVE-2024-3603343 days apartBluetooth: qca: fix info leak when fetching board id
    28Monitor
  • CVE-2024-57838183 days aparts390/entry: Mark IRQ entries to fix stack depot warnings
    28Monitor

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.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

CWE-668 · Exposure of Resource to Wrong Sphere

CVSS vector

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

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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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

References

Show all references (8 more)

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

All records