NVD / CVE Program· CNA Linux

CVE-2024-26889: Bluetooth: hci_core: Fix possible buffer overflow

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: 0.28% (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 0477ac14251d0ba813f311bb5db79eb07d99bfcc, 2e845867b4e279eff0a19ade253390470e07e8a1, 2edce8e9a99dd5e4404259d52e754fdc97fb42c2.

Low priority for now. Upgrade to Linux Linux 0477ac14251d0ba813f311bb5db79eb07d99bfcc, 2e845867b4e279eff0a19ade253390470e07e8a1, 2edce8e9a99dd5e4404259d52e754fdc97fb42c2 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_core: Fix possible buffer overflow struct hci_dev_info has a fixed size name[8] field so in the event that hdev->name is bigger than that strcpy would attempt to write past its size, so this fixes this problem by switching to use strscpy.

MediumCVSS 5.5 · v3.1—No exploit Fix available

BDU:2025-02907

Published: Apr 17, 2024
Updated: Oct 30, 2026
EPSS: 0.2% · 20th percentile
CWE: CWE-120

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 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

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

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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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel
debian	debian linux	cpe:2.3:o:debian:debian_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 4.19.311
linux linux kernel5.4.259 and later · before 5.4.273
linux linux kernel5.10.199 and later · before 5.10.214
linux linux kernel5.15.137 and later · before 5.15.153
linux linux kernel4.14.328 and later · before 4.15
linux linux kernel6.5.9 and later · before 6.6.23
linux linux kernel6.7 and later · before 6.7.11
linux linux kernel6.8 and later · before 6.8.2
linux linux kernel6.1.60 and later · before 6.1.83

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
- d9ce7d438366431e5688be98d8680336ce0a0f8d, 5558f4312dca43cebfb9a1aab3d632be91bbb736, 6.6affected
- 194ab82c1ea187512ff2f822124bd05b63fc9f76 and later · before 6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8acaffected · git
- b48595f5b1c6e81e06e164e7d2b7a30b1776161e and later · before 54a03e4ac1a41edf8a5087bd59f8241b0de96d3daffected · git
- ffb060b136dd75a033ced0fc0aed2882c02e8b56 and later · before d47e6c1932cee02954ea588c9f09fd5ecefeadfcaffected · git
- bbec1724519ecd9c468d1186a8f30b7567175bfb and later · before 2e845867b4e279eff0a19ade253390470e07e8a1affected · git
- a55d53ad5c86aee3f6da50ee73626008997673fa and later · before 0477ac14251d0ba813f311bb5db79eb07d99bfccaffected · git
- dcda165706b9fbfd685898d46a6749d7d397e0c0 and later · before a41c8efe659caed0e21422876bbb6b73c15b5244affected · git
- dcda165706b9fbfd685898d46a6749d7d397e0c0 and later · before 8c28598a2c29201d2ba7fc37539a7d41c264fb10affected · git
- dcda165706b9fbfd685898d46a6749d7d397e0c0 and later · before 2edce8e9a99dd5e4404259d52e754fdc97fb42c2affected · git
- dcda165706b9fbfd685898d46a6749d7d397e0c0 and later · before 81137162bfaa7278785b24c1fd2e9e74f082e8e4affected · git

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.85-1	6.1.85-1
Debian:13	linux	before 6.7.12-1	6.7.12-1

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-2024-26885Apr 17, 2024 · bpf: Fix DEVMAP_HASH overflow check on 32-bit arches
31Monitor
← EarlierCVE-2024-26886Apr 17, 2024 · Bluetooth: af_bluetooth: Fix deadlock
26Monitor
Later →CVE-2024-26891Apr 17, 2024 · iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected
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 / package	Fixed version	Source
Linux Linux	0477ac14251d0ba813f311bb5db79eb07d99bfcc	Vendor (CNA)
Linux Linux	2e845867b4e279eff0a19ade253390470e07e8a1	Vendor (CNA)
Linux Linux	2edce8e9a99dd5e4404259d52e754fdc97fb42c2	Vendor (CNA)
Linux Linux	4.15	Vendor (CNA)
Linux Linux	4.19.311	Vendor (CNA)
Linux Linux	5.10.214	Vendor (CNA)
Linux Linux	5.15.153	Vendor (CNA)
Linux Linux	5.4.273	Vendor (CNA)
Linux Linux	54a03e4ac1a41edf8a5087bd59f8241b0de96d3d	Vendor (CNA)
Linux Linux	6.1.191	Vendor (CNA)
Linux Linux	6.6	Vendor (CNA)
Linux Linux	6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8ac	Vendor (CNA)
Linux Linux	81137162bfaa7278785b24c1fd2e9e74f082e8e4	Vendor (CNA)
Linux Linux	8c28598a2c29201d2ba7fc37539a7d41c264fb10	Vendor (CNA)
Linux Linux	a41c8efe659caed0e21422876bbb6b73c15b5244	Vendor (CNA)
Linux Linux	d47e6c1932cee02954ea588c9f09fd5ecefeadfc	Vendor (CNA)
debian:linux	6.1.85-1 · Debian:12	Package 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-2023-44466201 days apartAn issue was discovered in net/ceph/messenger_v2.c in the Linux kernel before 6.4.5.
48Plan
CVE-2023-5273534 days apartbpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself
36Monitor
CVE-2024-2692711 days apartASoC: SOF: Add some bounds checking to firmware data
33Monitor
CVE-2022-4865711 days apartarm64: topology: fix possible overflow in amu_fie_setup()
31Monitor
CVE-2024-2679713 days apartdrm/amd/display: Prevent potential buffer overflow in map_hw_resources
31Monitor
CVE-2024-2693614 days apartksmbd: validate request buffer size in smb2_allocate_rsp_buf()
31Monitor

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)

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS vector

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

nvd-secondary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

The bug in code

The whole CWE-120 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1char buf[256];
2memcpy(buf, pkt->data, pkt->len);

Fixed

1char buf[256];
2if (pkt->len > sizeof(buf)) {
3  return -EINVAL;
4}
5memcpy(buf, pkt->data, pkt->len);

Attack context

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

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

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

References

git.kernel.org/stable/c/0477ac14251d0ba813f311bb5db79eb07d99bfcc

Show all references (12 more)

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

All records