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NVD / CVE Program· CNA Linux

CVE-2025-40294: Bluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 3a50d59b3781bc3a4e96533612509546a4c309a7, 4b7d4aa5399b5a64caee639275615c63c008540d, 5f7350ff2b179764a4f40ba4161b60b8aaef857b.

Low priority for now. Upgrade to Linux Linux 3a50d59b3781bc3a4e96533612509546a4c309a7, 4b7d4aa5399b5a64caee639275615c63c008540d, 5f7350ff2b179764a4f40ba4161b60b8aaef857b 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: Bluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern() In the parse_adv_monitor_pattern() function, the value of the 'length' variable is currently limited to HCI_MAX_EXT_AD_LENGTH(251). The size of the 'value' array in the mgmt_adv_pattern structure is 31. If the value of 'pattern[i].length' is set in the user space and exceeds 31, the 'patterns[i].value' array can be accessed out of bound when copied. Increasing the size of the 'value' array in the 'mgmt_adv_pattern' structure will break the userspace. Considering this, and to avoid OOB access revert the limits for 'offset' and 'length' back to the value of HCI_MAX_AD_LENGTH. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE.

—No exploit Fix available
Published
Dec 8, 2025
Updated
Oct 14, 2026
EPSS
0.2% · 9th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
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.

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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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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.

—

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

    • 6.6affected
    • 99f30e12e588f9982a6eb1916e53510bff25b3b8 and later · before 96616530f524a0a76248cd44201de0a9e8526190affected · git
    • db08722fc7d46168fe31d9b8a7b29229dd959f9f and later · before 5f7350ff2b179764a4f40ba4161b60b8aaef857baffected · git
    • db08722fc7d46168fe31d9b8a7b29229dd959f9f and later · before 4b7d4aa5399b5a64caee639275615c63c008540daffected · git
    • db08722fc7d46168fe31d9b8a7b29229dd959f9f and later · before 3a50d59b3781bc3a4e96533612509546a4c309a7affected · git
    • db08722fc7d46168fe31d9b8a7b29229dd959f9f and later · before 8d59fba49362c65332395789fd82771f1028d87eaffected · git
    • 6.1.83 and later · before 6.1.159affected · semver
    • before 6.6not affected · semver
    • 6.1.159 and later · up to and including 6.1.*not affected · semver
    • 6.6.117 and later · up to and including 6.6.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-124.31.1.el10_16.12.0-124.31.1.el10_1
AlmaLinux:10kernel-docbefore 6.12.0-124.31.1.el10_16.12.0-124.31.1.el10_1
AlmaLinux:9kernelbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64kbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debugbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-develbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-cross-headersbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-debugbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-debug-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-debug-develbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-40292Dec 8, 2025 · virtio-net: fix received length check in big packets
    33Monitor
  • ← EarlierCVE-2025-40293Dec 8, 2025 · iommufd: Don't overflow during division for dirty tracking
    0Monitor
  • Later →CVE-2025-40295Dec 8, 2025 · fscrypt: fix left shift underflow when inode->i_blkbits > PAGE_SHIFT
    0Monitor

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 Linux3a50d59b3781bc3a4e96533612509546a4c309a7Vendor (CNA)
Linux Linux4b7d4aa5399b5a64caee639275615c63c008540dVendor (CNA)
Linux Linux5f7350ff2b179764a4f40ba4161b60b8aaef857bVendor (CNA)
Linux Linux6.1.159Vendor (CNA)
Linux Linux8d59fba49362c65332395789fd82771f1028d87eVendor (CNA)
Linux Linux96616530f524a0a76248cd44201de0a9e8526190Vendor (CNA)
almalinux:kernel5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel-matched5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.159-1 · Debian:12Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

+2

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).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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 (4 more)

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

All records