Описание
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
A flaw was found in the Linux kernel's ath12k Wi-Fi driver. This vulnerability allows increased kernel memory consumption, leading to a denial of service, via malformed firmware/WMI input during device initialization.
Отчет
Fixes a memory leak in ath12k_service_ready_ext_event() where svc_rdy_ext.mac_phy_caps wasn’t freed on the error path. Impact is limited to kernel memory consumption during device bring-up or error handling when the firmware/WMI “service ready ext” parsing fails. It isn’t triggerable by normal network traffic (requires malformed firmware/WMI input). For the CVSS the PR:H because an attacker would need high privileges or control over device firmware/driver initialization (e.g., loading modified firmware or otherwise influencing WMI events), but not just user-space or over-the-air packets.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Fix deferred | ||
| Red Hat Enterprise Linux 6 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 9 | kernel | Fix deferred | ||
| Red Hat Enterprise Linux 9 | kernel-rt | Fix deferred |
Показывать по
Дополнительная информация
Статус:
EPSS
4.7 Medium
CVSS3
Связанные уязвимости
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...
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_pr
In the Linux kernel, the following vulnerability has been resolved: w ...
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...
Уязвимость функции ath12k_service_ready_ext_event() модуля drivers/net/wireless/ath/ath12k/wmi.c ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
4.7 Medium
CVSS3