NVD / CVE Program· CNA Linux

CVE-2023-53145: Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition

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 179c65828593aff1f444e15debd40a477cb23cf4, 3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e, 6c3653627397a0d6eab19b20a59423e118985a6b.

Low priority for now. Upgrade to Linux Linux 179c65828593aff1f444e15debd40a477cb23cf4, 3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e, 6c3653627397a0d6eab19b20a59423e118985a6b 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: btsdio: fix use after free bug in btsdio_remove due to race condition In btsdio_probe, the data->work is bound with btsdio_work. It will be started in btsdio_send_frame. If the btsdio_remove runs with a unfinished work, there may be a race condition that hdev is freed but used in btsdio_work. Fix it by canceling the work before do cleanup in btsdio_remove.

HighCVSS 7.8 · v3.1—No exploit Fix available

BDU:2026-02186

Published: May 10, 2025
Updated: Jun 17, 2026
EPSS: 0.1% · 8th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

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

linux linux kernelbefore 4.14.326
linux linux kernel4.15 and later · before 4.19.295
linux linux kernel4.20 and later · before 5.4.257
linux linux kernel5.5 and later · before 5.10.195
linux linux kernel5.11 and later · before 5.15.131
linux linux kernel5.16 and later · before 6.1.52
linux linux kernel6.2 and later · before 6.3
linux linux kernel6.3

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
- 2.6.24affected
- ddbaf13e3609442b64abb931ac21527772d87980 and later · before 6c3653627397a0d6eab19b20a59423e118985a6baffected · git
- ddbaf13e3609442b64abb931ac21527772d87980 and later · before 3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6eaffected · git
- ddbaf13e3609442b64abb931ac21527772d87980 and later · before a6650d27ab2c12a8ee750f396edb5ac8b4558b2eaffected · git
- ddbaf13e3609442b64abb931ac21527772d87980 and later · before 746b363bef41cc159c051c47f9e30800bc6b520daffected · git
- ddbaf13e3609442b64abb931ac21527772d87980 and later · before a5c2a467e9e789ae0891de55b766daac52e3b7b3affected · git
- ddbaf13e3609442b64abb931ac21527772d87980 and later · before 179c65828593aff1f444e15debd40a477cb23cf4affected · git
- ddbaf13e3609442b64abb931ac21527772d87980 and later · before 73f7b171b7c09139eb3c6a5677c200dc1be5f318affected · git
- before 2.6.24not affected · semver
- 4.14.326 and later · up to and including 4.14.*not affected · semver

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 6.1.52-1	6.1.52-1
Debian:13	linux	before 6.3.7-1	6.3.7-1

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-2025-37882May 9, 2025 · usb: xhci: Fix isochronous Ring Underrun/Overrun event handling
31Monitor
← EarlierCVE-2025-37885May 9, 2025 · KVM: x86: Reset IRTE to host control if *new* route isn't postable
31Monitor
Later →CVE-2023-53146May 14, 2025 · media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer()
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	179c65828593aff1f444e15debd40a477cb23cf4	Vendor (CNA)
Linux Linux	3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e	Vendor (CNA)
Linux Linux	6c3653627397a0d6eab19b20a59423e118985a6b	Vendor (CNA)
Linux Linux	73f7b171b7c09139eb3c6a5677c200dc1be5f318	Vendor (CNA)
Linux Linux	746b363bef41cc159c051c47f9e30800bc6b520d	Vendor (CNA)
Linux Linux	a5c2a467e9e789ae0891de55b766daac52e3b7b3	Vendor (CNA)
Linux Linux	a6650d27ab2c12a8ee750f396edb5ac8b4558b2e	Vendor (CNA)
debian:linux	6.1.52-1 · 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.

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

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-416 · Use After Free

CVSS vector

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

nvd-primary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

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

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

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

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

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

References

git.kernel.org/stable/c/179c65828593aff1f444e15debd40a477cb23cf4

Show all references (6 more)

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

All records