Riskcovery

CVE-2025-39890

wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event

State
Published
Severity
5.5 Medium
Published
Sep 24, 2025
Updated
May 11, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

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

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

  • CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

ProductVersions
LinuxLinux
  • d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 99dbad1b01d3b2f361a9db55c1af1212be497a3dAffected
  • d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 3a392f874ac83a77ad0e53eb8aafdbeb787c9298Affected
  • d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 1089f65b2de78c7837ef6b4f26146a5a5b0b9749Affected
  • d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 89142d34d5602c7447827beb181fa06eb08b9d5cAffected
LinuxLinux
  • 6.3Affected
  • before 6.3Not affected
  • 6.6.94 through 6.6.*Not affected
  • 6.12.34 through 6.12.*Not affected
  • 6.15.3 through 6.15.*Not affected
  • 6.16 and laterNot affected

References

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