5.5

CVE-2025-39890

wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event

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
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.3 < 6.6.94
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.34
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.02% 0.051
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.