01 Record

CVE-2025-39863

wifi: brcmfmac: fix use-after-free when rescheduling brcmf_btcoex_info work

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

wifi: brcmfmac: fix use-after-free when rescheduling brcmf_btcoex_info work

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

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 4.8% 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 2026-10-19.

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

2025-09-19 15:26Z1 YR AGO

Last updated

2026-10-15 01:08Z14 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-416Use After FreeVariant

Data version

5.2

Document digest

f735da23b7010ef78fd3c938ed1687daa7487d3e71494842fa573c44dd761733

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux61730d4dfffc2cc9d3a49fad87633008105c18ba to < c75600e69e66a751cc046cd9c407b942f298d852, 61730d4dfffc2cc9d3a49fad87633008105c18ba to < ae58f70bde0433f27ef4b388ab50634736607bf6, 61730d4dfffc2cc9d3a49fad87633008105c18ba to < f1150153c4e5940fe49ab51136343c5b4fe49d63, 61730d4dfffc2cc9d3a49fad87633008105c18ba to < 3e789f8475f6c857c88de5c5bf4b24b11a477dd7, 61730d4dfffc2cc9d3a49fad87633008105c18ba to < 2f6fbc8e04ca1d1d5c560be694199f847229c625, 61730d4dfffc2cc9d3a49fad87633008105c18ba to < 9cb83d4be0b9b697eae93d321e0da999f9cdfcfc, 3.10—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/c75600e69e66a751cc046cd9c407b942f298d852
git.kernel.orghttps://git.kernel.org/stable/c/ae58f70bde0433f27ef4b388ab50634736607bf6
git.kernel.orghttps://git.kernel.org/stable/c/f1150153c4e5940fe49ab51136343c5b4fe49d63
git.kernel.orghttps://git.kernel.org/stable/c/3e789f8475f6c857c88de5c5bf4b24b11a477dd7
git.kernel.orghttps://git.kernel.org/stable/c/2f6fbc8e04ca1d1d5c560be694199f847229c625
git.kernel.orghttps://git.kernel.org/stable/c/9cb83d4be0b9b697eae93d321e0da999f9cdfcfc
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-784472.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.170-1

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

Debian 13

linux
Fixed in 6.12.48-1

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

Debian 14

linux
Fixed in 6.16.6-1

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