CVE-2024-58096

/// Technical description

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

wifi: ath11k: add srng->lock for ath11k_hal_srng_* in monitor mode

ath11k_hal_srng_* should be used with srng->lock to protect srng data.

For ath11k_dp_rx_mon_dest_process() and ath11k_dp_full_mon_process_rx(),

they use ath11k_hal_srng_* for many times but never call srng->lock.

So when running (full) monitor mode, warning will occur:

RIP: 0010:ath11k_hal_srng_dst_peek+0x18/0x30 [ath11k]

Call Trace:

? ath11k_hal_srng_dst_peek+0x18/0x30 [ath11k]

ath11k_dp_rx_process_mon_status+0xc45/0x1190 [ath11k]

? idr_alloc_u32+0x97/0xd0

ath11k_dp_rx_process_mon_rings+0x32a/0x550 [ath11k]

ath11k_dp_service_srng+0x289/0x5a0 [ath11k]

ath11k_pcic_ext_grp_napi_poll+0x30/0xd0 [ath11k]

__napi_poll+0x30/0x1f0

net_rx_action+0x198/0x320

__do_softirq+0xdd/0x319

So add srng->lock for them to avoid such warnings.

Inorder to fetch the srng->lock, should change srng's definition from

'void' to 'struct hal_srng'. And initialize them

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References