CVE-2022-49131

/// Technical description

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

ath11k: fix kernel panic during unload/load ath11k modules

Call netif_napi_del() from ath11k_ahb_free_ext_irq() to fix

the following kernel panic when unload/load ath11k modules

for few iterations.

[ 971.201365] Unable to handle kernel paging request at virtual address 6d97a208

[ 971.204227] pgd = 594c2919

[ 971.211478] [6d97a208] *pgd=00000000

[ 971.214120] Internal error: Oops: 5 [#1] PREEMPT SMP ARM

[ 971.412024] CPU: 2 PID: 4435 Comm: insmod Not tainted 5.4.89 #0

[ 971.434256] Hardware name: Generic DT based system

[ 971.440165] PC is at napi_by_id+0x10/0x40

[ 971.445019] LR is at netif_napi_add+0x160/0x1dc

[ 971.743127] (napi_by_id) from [<807d89a0>] (netif_napi_add+0x160/0x1dc)

[ 971.751295] (netif_napi_add) from [<7f1209ac>] (ath11k_ahb_config_irq+0xf8/0x414 [ath11k_ahb])

[ 971.759164] (ath11k_ahb_config_irq [ath11k_ahb]) from [<7f12135c>] (ath11k_ahb_probe+0x40c/0x51c [ath11k_ahb])

[ 971.768567]

/// 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