01 Record

CVE-2025-38593

Bluetooth: hci_sync: fix double free in 'hci_discovery_filter_clear()'

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

Bluetooth: hci_sync: fix double free in 'hci_discovery_filter_clear()'

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 6.7% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-15.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-08-19 17:03Z1 YR AGO

Last updated

2026-10-15 22:02Z13 DAYS AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-415Double FreeVariant

Data version

5.2

Document digest

06be24ee0de143ac6f39c1d7ebf2a286882e5cec1cfa8198e8663ddfdced736d

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxad383c2c65a5baf16e334cd40a013cc302176891 to < 86f3dcd1f331cfd4fd7ec88906955134ec51afbe, ad383c2c65a5baf16e334cd40a013cc302176891 to < 7ce9bb0b95fc280e9212b8922590c492ca1d9c39, ad383c2c65a5baf16e334cd40a013cc302176891 to < 16852eccbdfaf41a666705e3f8be55cf2864c5ca, ad383c2c65a5baf16e334cd40a013cc302176891 to < a351ff6b8ecca4229afaa0d98042bead8de64799, ad383c2c65a5baf16e334cd40a013cc302176891 to < f8069f34c4c976786ded97498012225af87435d7, ad383c2c65a5baf16e334cd40a013cc302176891 to < 2935e556850e9c94d7a00adf14d3cd7fe406ac03, 5.17—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/86f3dcd1f331cfd4fd7ec88906955134ec51afbe
git.kernel.orghttps://git.kernel.org/stable/c/7ce9bb0b95fc280e9212b8922590c492ca1d9c39
git.kernel.orghttps://git.kernel.org/stable/c/16852eccbdfaf41a666705e3f8be55cf2864c5ca
git.kernel.orghttps://git.kernel.org/stable/c/a351ff6b8ecca4229afaa0d98042bead8de64799
git.kernel.orghttps://git.kernel.org/stable/c/f8069f34c4c976786ded97498012225af87435d7
git.kernel.orghttps://git.kernel.org/stable/c/2935e556850e9c94d7a00adf14d3cd7fe406ac03

07 Fixed in

Debian 12

linux
Fixed in 6.1.159-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.43-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.16.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.