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NVD / CVE Program· CNA Linux

CVE-2026-64549: Bluetooth: bpa10x: avoid OOB read of revision string in bpa10x_setup()

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: 0.18% (FIRST EPSS).
  • Fixed version: Linux Linux 1813add71e386f77b3040e6c8dc9b7b3ff965a6c, 4b4008dda1d0c6e598d7865631ad4eda63a560f0, 7a64f39ebe1bacd9004a62eceadac0b122ec3cc2; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 1813add71e386f77b3040e6c8dc9b7b3ff965a6c, 4b4008dda1d0c6e598d7865631ad4eda63a560f0, 7a64f39ebe1bacd9004a62eceadac0b122ec3cc2; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1 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: bpa10x: avoid OOB read of revision string in bpa10x_setup() bpa10x_setup() sends the vendor command 0xfc0e and passes the response to bt_dev_info() and hci_set_fw_info() as a "%s" string starting at skb->data + 1, without checking the length: bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); hci_set_fw_info(hdev, "%s", skb->data + 1); A device that returns a one-byte response (status only) leaves skb->data + 1 past the end of the data, and the %s walk reads adjacent slab memory until it meets a NUL. The same happens when the payload is not NUL-terminated within skb->len. The out-of-bounds bytes end up in the kernel log and the firmware-info debugfs file. Print the revision string with a bounded "%.*s" limited to skb->len - 1 instead. This keeps the string readable for well-behaved devices while never reading past the received data, and does not fail setup, so a device returning a short or unterminated response keeps working.

—No exploit Fix available
Published
Jul 27, 2026
Updated
Nov 3, 2026
EPSS
0.1% · 7th 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 · 0.1%

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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

    • 4.4affected
    • ddd68ec8f4847b460c9f580076eafe13b031a6fd and later · before 1813add71e386f77b3040e6c8dc9b7b3ff965a6caffected · git
    • ddd68ec8f4847b460c9f580076eafe13b031a6fd and later · before bd56c23f1f8681a2857ee924a8bd3abf87c8913baffected · git
    • ddd68ec8f4847b460c9f580076eafe13b031a6fd and later · before 7a64f39ebe1bacd9004a62eceadac0b122ec3cc2affected · git
    • ddd68ec8f4847b460c9f580076eafe13b031a6fd and later · before f80b4afe893dffa9fabdbf80fb4d6782b24a6793affected · git
    • ddd68ec8f4847b460c9f580076eafe13b031a6fd and later · before 4b4008dda1d0c6e598d7865631ad4eda63a560f0affected · git
    • ddd68ec8f4847b460c9f580076eafe13b031a6fd and later · before bfc9e7be289df11e8e38c98cd78019d67fdd0bd5affected · git
    • ddd68ec8f4847b460c9f580076eafe13b031a6fd and later · before a8e169d308775039200bb9c905c7ce420db6e8c5affected · git
    • ddd68ec8f4847b460c9f580076eafe13b031a6fd and later · before dd068ef044128db655f48323a4acfd5907e04903affected · git
    • before 4.4not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:12linux-6.12before 6.12.100-1~deb12u16.12.100-1~deb12u1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

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-2026-64547Jul 27, 2026 · net: usb: net1080: validate packet_len before pad-byte access in rx_fixup
    32Monitor
  • ← EarlierCVE-2026-64548Jul 27, 2026 · bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data()
    33Monitor
  • Later →CVE-2026-64550Jul 27, 2026 · net: qualcomm: rmnet: validate MAP frame length before ingress parsing
    29Monitor

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 Linux1813add71e386f77b3040e6c8dc9b7b3ff965a6cVendor (CNA)
Linux Linux4b4008dda1d0c6e598d7865631ad4eda63a560f0Vendor (CNA)
Linux Linux7a64f39ebe1bacd9004a62eceadac0b122ec3cc2Vendor (CNA)
Linux Linuxa8e169d308775039200bb9c905c7ce420db6e8c5Vendor (CNA)
Linux Linuxbd56c23f1f8681a2857ee924a8bd3abf87c8913bVendor (CNA)
Linux Linuxbfc9e7be289df11e8e38c98cd78019d67fdd0bd5Vendor (CNA)
Linux Linuxdd068ef044128db655f48323a4acfd5907e04903Vendor (CNA)
Linux Linuxf80b4afe893dffa9fabdbf80fb4d6782b24a6793Vendor (CNA)
azl3 kernel 6.6.144.1-1 on Azure Linux 3.06.6.145.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.100-1~deb12u1 · 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.

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).

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

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 (7 more)

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

All records