CVE-2024-50236

Summary

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

wifi: ath10k: Fix memory leak in management tx

In the current logic, memory is allocated for storing the MSDU context during management packet TX but this memory is not being freed during management TX completion. Similar leaks are seen in the management TX cleanup logic.

Kmemleak reports this problem as below,

unreferenced object 0xffffff80b64ed250 (size 16): comm "kworker/u16:7", pid 148, jiffies 4294687130 (age 714.199s) hex dump (first 16 bytes): 00 2b d8 d8 80 ff ff ff c4 74 e9 fd 07 00 00 00 .+…….t…… backtrace: [<ffffffe6e7b245dc>] __kmem_cache_alloc_node+0x1e4/0x2d8 [<ffffffe6e7adde88>] kmalloc_trace+0x48/0x110 [<ffffffe6bbd765fc>] ath10k_wmi_tlv_op_gen_mgmt_tx_send+0xd4/0x1d8 [ath10k_core] [<ffffffe6bbd3eed4>] ath10k_mgmt_over_wmi_tx_work+0x134/0x298 [ath10k_core] [<ffffffe6e78d5974>] process_scheduled_works+0x1ac/0x400 [<ffffffe6e78d60b8>] worker_thread+0x208/0x328 [<ffffffe6e78dc890>] kthread+0x100/0x1c0 [<ffffffe6e78166c0>] ret_from_fork+0x10/0x20

Free the memory during completion and cleanup to fix the leak.

Protect the mgmt_pending_tx idr_remove() operation in ath10k_wmi_tlv_op_cleanup_mgmt_tx_send() using ar->data_lock similar to other instances.

Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.2.0-01387-QCAHLSWMTPLZ-1

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxdc405152bb64d4ae01c9ac669de25b2d1fb6fc2d < eff818238bedb9c2484c251ec46f9f160911cdc0affected
LinuxLinuxdc405152bb64d4ae01c9ac669de25b2d1fb6fc2d < 6fc9af3df6ca7f3c94774d20f62dc7b49616026daffected
LinuxLinuxdc405152bb64d4ae01c9ac669de25b2d1fb6fc2d < 4112450da7d67b59ccedc2208bae622db17dbcb8affected
LinuxLinuxdc405152bb64d4ae01c9ac669de25b2d1fb6fc2d < 705be2dc45c7f852e211e16bc41a916fab741983affected
LinuxLinuxdc405152bb64d4ae01c9ac669de25b2d1fb6fc2d < 6cc23898e6ba47e976050d3c080b4d2c1add3748affected
LinuxLinuxdc405152bb64d4ae01c9ac669de25b2d1fb6fc2d < 5f5a939759c79e7385946c85e62feca51a18d816affected
LinuxLinuxdc405152bb64d4ae01c9ac669de25b2d1fb6fc2d < 2f6f1e26ac6d2b38e2198a71f81f0ade14d6b07baffected
LinuxLinuxdc405152bb64d4ae01c9ac669de25b2d1fb6fc2d < e15d84b3bba187aa372dff7c58ce1fd5cb48a076affected
LinuxLinux4.19affected
LinuxLinux0 < 4.19unaffected
LinuxLinux4.19.323 <= 4.19.*unaffected
LinuxLinux5.4.285 <= 5.4.*unaffected
LinuxLinux5.10.229 <= 5.10.*unaffected
LinuxLinux5.15.171 <= 5.15.*unaffected
LinuxLinux6.1.116 <= 6.1.*unaffected
LinuxLinux6.6.60 <= 6.6.*unaffected
LinuxLinux6.11.7 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References