CVE-2025-39890 - Vulnerability Details

- wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event

Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event

Currently, in ath12k_service_ready_ext_event(), svc_rdy_ext.mac_phy_caps
is not freed in the failure case, causing a memory leak. The following
trace is observed in kmemleak:

unreferenced object 0xffff8b3eb5789c00 (size 1024):
comm "softirq", pid 0, jiffies 4294942577
hex dump (first 32 bytes):
00 00 00 00 01 00 00 00 00 00 00 00 7b 00 00 10 ............{...
01 00 00 00 00 00 00 00 01 00 00 00 1f 38 00 00 .............8..
backtrace (crc 44e1c357):
__kmalloc_noprof+0x30b/0x410
ath12k_wmi_mac_phy_caps_parse+0x84/0x100 [ath12k]
ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k]
ath12k_wmi_svc_rdy_ext_parse+0x308/0x4c0 [ath12k]
ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k]
ath12k_service_ready_ext_event.isra.0+0x44/0xd0 [ath12k]
ath12k_wmi_op_rx+0x2eb/0xd70 [ath12k]
ath12k_htc_rx_completion_handler+0x1f4/0x330 [ath12k]
ath12k_ce_recv_process_cb+0x218/0x300 [ath12k]
ath12k_pci_ce_workqueue+0x1b/0x30 [ath12k]
process_one_work+0x219/0x680
bh_worker+0x198/0x1f0
tasklet_action+0x13/0x30
handle_softirqs+0xca/0x460
__irq_exit_rcu+0xbe/0x110
irq_exit_rcu+0x9/0x30

Free svc_rdy_ext.mac_phy_caps in the error case to fix this memory leak.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

Published: 2025-09-24

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`d889913205cf7ebda905b1e62c5867ed4e39f6c2`	affected	< 99dbad1b01d3b2f361a9db55c1af1212be497a3d
`d889913205cf7ebda905b1e62c5867ed4e39f6c2`	affected	< 3a392f874ac83a77ad0e53eb8aafdbeb787c9298
`d889913205cf7ebda905b1e62c5867ed4e39f6c2`	affected	< 1089f65b2de78c7837ef6b4f26146a5a5b0b9749
`d889913205cf7ebda905b1e62c5867ed4e39f6c2`	affected	< 89142d34d5602c7447827beb181fa06eb08b9d5c

Linux

affected

Version	Status	Constraints
`6.3`	affected	—
`0`	unaffected	< 6.3
`6.6.94`	unaffected	≤ 6.6.*
`6.12.34`	unaffected	≤ 6.12.*
`6.15.3`	unaffected	≤ 6.15.*
`6.16`	unaffected	≤ *

Configuration 1 [-]

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

No data.

Vendor	Product	Confidence	Versions
Linux	Linux Kernel	—	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2025-30959	In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event Currently, in ath12k_service_ready_ext_event(), svc_rdy_ext.mac_phy_caps is not freed in the failure case, causing a memory leak. The following trace is observed in kmemleak: unreferenced object 0xffff8b3eb5789c00 (size 1024): comm "softirq", pid 0, jiffies 4294942577 hex dump (first 32 bytes): 00 00 00 00 01 00 00 00 00 00 00 00 7b 00 00 10 ............{... 01 00 00 00 00 00 00 00 01 00 00 00 1f 38 00 00 .............8.. backtrace (crc 44e1c357): __kmalloc_noprof+0x30b/0x410 ath12k_wmi_mac_phy_caps_parse+0x84/0x100 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_wmi_svc_rdy_ext_parse+0x308/0x4c0 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_service_ready_ext_event.isra.0+0x44/0xd0 [ath12k] ath12k_wmi_op_rx+0x2eb/0xd70 [ath12k] ath12k_htc_rx_completion_handler+0x1f4/0x330 [ath12k] ath12k_ce_recv_process_cb+0x218/0x300 [ath12k] ath12k_pci_ce_workqueue+0x1b/0x30 [ath12k] process_one_work+0x219/0x680 bh_worker+0x198/0x1f0 tasklet_action+0x13/0x30 handle_softirqs+0xca/0x460 __irq_exit_rcu+0xbe/0x110 irq_exit_rcu+0x9/0x30 Free svc_rdy_ext.mac_phy_caps in the error case to fix this memory leak. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Ubuntu USN	USN-7769-3	Linux kernel vulnerabilities
Ubuntu USN	USN-7789-1	Linux kernel (Oracle) vulnerabilities
Ubuntu USN	USN-7789-2	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-8028-1	Linux kernel vulnerabilities
Ubuntu USN	USN-8028-2	Linux kernel (Real-time) vulnerabilities
Ubuntu USN	USN-8031-1	Linux kernel (GCP) vulnerabilities
Ubuntu USN	USN-8028-3	Linux kernel (Real-time) vulnerabilities
Ubuntu USN	USN-8028-4	Linux kernel (FIPS) vulnerabilities
Ubuntu USN	USN-8028-5	Linux kernel vulnerabilities
Ubuntu USN	USN-8031-2	Linux kernel (GCP FIPS) vulnerabilities
Ubuntu USN	USN-8028-6	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-8031-3	Linux kernel vulnerabilities
Ubuntu USN	USN-8052-1	Linux kernel (Low Latency) vulnerabilities
Ubuntu USN	USN-8028-7	Linux kernel (Low Latency NVIDIA) vulnerabilities
Ubuntu USN	USN-8028-8	Linux kernel (IBM) vulnerabilities
Ubuntu USN	USN-8052-2	Linux kernel (Xilinx) vulnerabilities
Ubuntu USN	USN-8074-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-8074-2	Linux kernel (Azure FIPS) vulnerabilities
Ubuntu USN	USN-8126-1	Linux kernel (Azure) vulnerabilities

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00019.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://git.kernel.org/stable/c/1089f65b2de78c7837ef6b4f26146a5a5b0b9749
https://git.kernel.org/stable/c/3a392f874ac83a77ad0e53eb8aafdbeb787c9298
https://git.kernel.org/stable/c/89142d34d5602c7447827beb181fa06eb08b9d5c
https://git.kernel.org/stable/c/99dbad1b01d3b2f361a9db55c1af1212be497a3d
https://nvd.nist.gov/vuln/detail/CVE-2025-39890
https://www.cve.org/CVERecord?id=CVE-2025-39890

History

Wed, 14 Jan 2026 18:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 12 Dec 2025 19:00:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-401
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Metrics		cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}`

Thu, 25 Sep 2025 08:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
Vendors & Products		Linux Linux linux Kernel

Thu, 25 Sep 2025 00:15:00 +0000

Type	Values Removed	Values Added
References		https://nvd.nist.gov/vuln/detail/CVE-2025-39890 https://www.cve.org/CVERecord?id=CVE-2025-39890

Wed, 24 Sep 2025 11:15:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event Currently, in ath12k_service_ready_ext_event(), svc_rdy_ext.mac_phy_caps is not freed in the failure case, causing a memory leak. The following trace is observed in kmemleak: unreferenced object 0xffff8b3eb5789c00 (size 1024): comm "softirq", pid 0, jiffies 4294942577 hex dump (first 32 bytes): 00 00 00 00 01 00 00 00 00 00 00 00 7b 00 00 10 ............{... 01 00 00 00 00 00 00 00 01 00 00 00 1f 38 00 00 .............8.. backtrace (crc 44e1c357): __kmalloc_noprof+0x30b/0x410 ath12k_wmi_mac_phy_caps_parse+0x84/0x100 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_wmi_svc_rdy_ext_parse+0x308/0x4c0 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_service_ready_ext_event.isra.0+0x44/0xd0 [ath12k] ath12k_wmi_op_rx+0x2eb/0xd70 [ath12k] ath12k_htc_rx_completion_handler+0x1f4/0x330 [ath12k] ath12k_ce_recv_process_cb+0x218/0x300 [ath12k] ath12k_pci_ce_workqueue+0x1b/0x30 [ath12k] process_one_work+0x219/0x680 bh_worker+0x198/0x1f0 tasklet_action+0x13/0x30 handle_softirqs+0xca/0x460 __irq_exit_rcu+0xbe/0x110 irq_exit_rcu+0x9/0x30 Free svc_rdy_ext.mac_phy_caps in the error case to fix this memory leak. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Title		wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event
References		https://git.kernel.org/stable/c/1089f65b2de78c7837ef6b4f26146a5a5b0b9749 https://git.kernel.org/stable/c/3a392f874ac83a77ad0e53eb8aafdbeb787c9298 https://git.kernel.org/stable/c/89142d34d5602c7447827beb181fa06eb08b9d5c https://git.kernel.org/stable/c/99dbad1b01d3b2f361a9db55c1af1212be497a3d

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-24T11:02:53.539Z

Updated: 2026-05-11T21:38:24.347Z

Reserved: 2025-04-16T07:20:57.145Z

Link: CVE-2025-39890

Vulnrichment

Updated: 2026-01-14T17:32:46.325Z

NVD

Status : Modified

Published: 2025-09-24T11:15:32.920

Modified: 2026-01-14T18:16:39.223

Link: CVE-2025-39890

Redhat

Severity :

Publid Date: 2025-09-24T11:02:53Z

Links: CVE-2025-39890 - Bugzilla

OpenCVE Enrichment

Updated: 2025-09-25T08:21:28Z

Weaknesses

CWE-401

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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