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NVD / CVE Program· CNA Linux

CVE-2024-27416: Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.35% (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 30a5e812f78e3d1cced90e1ed750bf027599205f, 4.15, 4.19.309.
  • Severity is disputed: the assigning authority (CNA) scores it 8.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 30a5e812f78e3d1cced90e1ed750bf027599205f, 4.15, 4.19.309 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: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST If we received HCI_EV_IO_CAPA_REQUEST while HCI_OP_READ_REMOTE_EXT_FEATURES is yet to be responded assume the remote does support SSP since otherwise this event shouldn't be generated.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 17, 2024
Updated
Aug 5, 2026
EPSS
0.3% · 29th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
8.8
3.3 point gap

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

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

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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-27416

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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
debiandebian linux

Affected versions

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

  • debian debian linux10.0
  • linux linux kernel4.19.297 and later · before 4.19.309
  • linux linux kernel5.4.259 and later · before 5.4.271
  • linux linux kernel5.10.199 and later · before 5.10.212
  • linux linux kernel5.15.137 and later · before 5.15.151
  • linux linux kernel6.1.60 and later · before 6.1.81
  • linux linux kernel4.14.328 and later · before 4.15
  • linux linux kernel6.6.1 and later · before 6.6.21
  • linux linux kernel6.7 and later · before 6.7.9
  • linux linux kernel6.5.9 and later · before 6.6
  • linux linux kernel6.6
  • linux linux kernel6.8

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

    • 2c7f9fda663a1b31a61744ffc456bdb89c4efc7f, 746dbb0fc6392eca23de27f8aa9d13979b564889, 6.6affected
    • ccb8618c972f941ebc6b2b9db491025b3369efcb and later · before afec8f772296dd8e5a2a6f83bbf99db1b9ca877faffected · git
    • 1769ac55dbf3114d5bf79f11bd5dca80ee263f9c and later · before 79820a7e1e057120c49be07cbe10643d0706b259affected · git
    • 40a33a129d99639921ce00d274cca44ba282f1ac and later · before df193568d61234c81de7ed4d540c01975de60277affected · git
    • 1ef071526848cc3109ade63268854cd7c20ece0c and later · before c3df637266df29edee85e94cab5fd7041e5753baaffected · git
    • 25e5d2883002e235f3378b8592aad14aeeef898c and later · before 30a5e812f78e3d1cced90e1ed750bf027599205faffected · git
    • c7f59461f5a78994613afc112cdd73688aef9076 and later · before fba268ac36ab19f9763ff90d276cde0ce6cd5f31affected · git
    • c7f59461f5a78994613afc112cdd73688aef9076 and later · before 8e2758cc25891d2b76717aaf89b40ed215de188caffected · git
    • c7f59461f5a78994613afc112cdd73688aef9076 and later · before 7e74aa53a68bf60f6019bd5d9a9a1406ec4d4865affected · git
    • 4.19.297 and later · before 4.19.309affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.82-16.1.82-1
Debian:13linuxbefore 6.7.9-16.7.9-1

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-2024-27414May 17, 2024 · rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
    22Monitor
  • ← EarlierCVE-2024-27415May 17, 2024 · netfilter: bridge: confirm multicast packets before passing them up the stack
    18Monitor
  • Later →CVE-2024-27417May 17, 2024 · ipv6: fix potential "struct net" leak in inet6_rtm_getaddr()
    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 Linux30a5e812f78e3d1cced90e1ed750bf027599205fVendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.19.309Vendor (CNA)
Linux Linux5.10.212Vendor (CNA)
Linux Linux5.15.151Vendor (CNA)
Linux Linux5.4.271Vendor (CNA)
Linux Linux6.1.81Vendor (CNA)
Linux Linux6.6Vendor (CNA)
Linux Linux79820a7e1e057120c49be07cbe10643d0706b259Vendor (CNA)
Linux Linux7e74aa53a68bf60f6019bd5d9a9a1406ec4d4865Vendor (CNA)
Linux Linux8e2758cc25891d2b76717aaf89b40ed215de188cVendor (CNA)
Linux Linuxafec8f772296dd8e5a2a6f83bbf99db1b9ca877fVendor (CNA)
Linux Linuxc3df637266df29edee85e94cab5fd7041e5753baVendor (CNA)
Linux Linuxdf193568d61234c81de7ed4d540c01975de60277Vendor (CNA)
Linux Linuxfba268ac36ab19f9763ff90d276cde0ce6cd5f31Vendor (CNA)
debian:linux6.1.82-1 · Debian:12Package 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.

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

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
none
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
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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 (9 more)

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

All records