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NVD / CVE Program· CNA Linux

CVE-2024-26810: vfio/pci: Lock external INTx masking ops

HighCVSS 7.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.19% (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 03505e3344b0576fd619416793a31eae9c5b73bf, 04a4a017b9ffd7b0f427b8c376688d14cb614651, 1e71b6449d55179170efc8dee8664510bb813b42.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 03505e3344b0576fd619416793a31eae9c5b73bf, 04a4a017b9ffd7b0f427b8c376688d14cb614651, 1e71b6449d55179170efc8dee8664510bb813b42 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: vfio/pci: Lock external INTx masking ops Mask operations through config space changes to DisINTx may race INTx configuration changes via ioctl. Create wrappers that add locking for paths outside of the core interrupt code. In particular, irq_type is updated holding igate, therefore testing is_intx() requires holding igate. For example clearing DisINTx from config space can otherwise race changes of the interrupt configuration. This aligns interfaces which may trigger the INTx eventfd into two camps, one side serialized by igate and the other only enabled while INTx is configured. A subsequent patch introduces synchronization for the latter flows.

Published
Apr 5, 2024
Updated
Oct 15, 2026
EPSS
0.1% · 9th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

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

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  • 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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Follow CVE-2024-26810

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  • when EPSS rises 20 points in a week

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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

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

    • 3.6affected
    • 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 and later · before 1e71b6449d55179170efc8dee8664510bb813b42affected · git
    • 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 and later · before 3dd9be6cb55e0f47544e7cdda486413f7134e3b3affected · git
    • 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 and later · before ec73e079729258a05452356cf6d098bf1504d5a6affected · git
    • 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 and later · before 3fe0ac10bd117df847c93408a9d428a453cd60e5affected · git
    • 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 and later · before 04a4a017b9ffd7b0f427b8c376688d14cb614651affected · git
    • 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 and later · before 6fe478d855b20ac1eb5da724afe16af5a2aaaa40affected · git
    • 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 and later · before 03505e3344b0576fd619416793a31eae9c5b73bfaffected · git
    • 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 and later · before 810cd4bb53456d0503cc4e7934e063835152c1b7affected · git
    • before 3.6not affected · semver
Affected versions · NVD (7)

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

  • linux linux kernel3.6 and later · before 5.4.274
  • linux linux kernel5.5 and later · before 5.10.215
  • linux linux kernel5.11 and later · before 5.15.154
  • linux linux kernel5.16 and later · before 6.1.84
  • linux linux kernel6.2 and later · before 6.6.24
  • linux linux kernel6.7 and later · before 6.7.12
  • linux linux kernel6.8 and later · before 6.8.3

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:9bpftoolbefore 7.3.0-427.33.1.el9_47.3.0-427.33.1.el9_4
AlmaLinux:9kernelbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64kbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-corebefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-debugbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-develbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-corebefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-cross-headersbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-debugbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-debug-corebefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-debug-develbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-427.33.1.el9_45.14.0-427.33.1.el9_4

+96

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-2024-26813Apr 5, 2024 · vfio/platform: Create persistent IRQ handlers
    22Monitor
  • ← EarlierCVE-2024-26814Apr 5, 2024 · vfio/fsl-mc: Block calling interrupt handler without trigger
    22Monitor
  • Later →CVE-2024-26812Apr 5, 2024 · vfio/pci: Create persistent INTx handler
    22Monitor

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 Linux03505e3344b0576fd619416793a31eae9c5b73bfVendor (CNA)
Linux Linux04a4a017b9ffd7b0f427b8c376688d14cb614651Vendor (CNA)
Linux Linux1e71b6449d55179170efc8dee8664510bb813b42Vendor (CNA)
Linux Linux3dd9be6cb55e0f47544e7cdda486413f7134e3b3Vendor (CNA)
Linux Linux3fe0ac10bd117df847c93408a9d428a453cd60e5Vendor (CNA)
Linux Linux6fe478d855b20ac1eb5da724afe16af5a2aaaa40Vendor (CNA)
Linux Linux810cd4bb53456d0503cc4e7934e063835152c1b7Vendor (CNA)
Linux Linuxec73e079729258a05452356cf6d098bf1504d5a6Vendor (CNA)
almalinux:bpftool7.3.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-427.33.1.el9_4 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.85-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.38.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.38.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.38.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.38.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.38.1.150600.12.16.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.38.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-kvmsmall6.4.0-150600.23.38.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-build6.4.0-150600.23.38.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-qa6.4.0-150600.23.38.1 · openSUSE:Leap 15.6Package registry (OSV)

+27

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.

National notice (Türkiye Cybersecurity Directorate / USOM)

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

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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
high · data or configuration can be modified
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
High
Availability impact
High

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

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

nvd-secondary

Attack context

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

ATT&CK techniques

—

References

Show all references (9 more)

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

All records