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CVE-2025-39890

wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event

MEDIUM
5.5
CVSS Score
Published: September 24, 2025 at 11:02 AM UTC
Updated: September 26, 2026 at 12:27 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.13 ≤ v < 6.15.36.3 ≤ v < 6.12.346.3 ≤ v < 6.15.36.3 ≤ v < 6.166.3 ≤ v < 6.6.946.7 ≤ v < 6.12.346.3d889913205cf7ebda905b1e62c5867ed4e39f6c2
Vendor states this is fixed in 1089f65b2de78c7837ef6b4f26146a5a5b0b9749 (fixed)
Vendor states this is fixed in 3a392f874ac83a77ad0e53eb8aafdbeb787c9298 (fixed)
Vendor states this is fixed in 89142d34d5602c7447827beb181fa06eb08b9d5c (fixed)
Vendor states this is fixed in 99dbad1b01d3b2f361a9db55c1af1212be497a3d (fixed)
Vendor states this is fixed in 6.12.34 (unaffected)
Vendor states this is fixed in 6.15.3 (unaffected)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)
Vendor states this is fixed in 6.6.94 (unaffected)

References (4)

Patch
Source: cverecord
https://git.kernel.org/stable/c/99dbad1b01d3b2f361a9db55c1af1212be497a3d
Patch
Source: cverecord
https://git.kernel.org/stable/c/3a392f874ac83a77ad0e53eb8aafdbeb787c9298
Patch
Source: cverecord
https://git.kernel.org/stable/c/1089f65b2de78c7837ef6b4f26146a5a5b0b9749
Patch
Source: cverecord
https://git.kernel.org/stable/c/89142d34d5602c7447827beb181fa06eb08b9d5c

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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