CVE-2025-38290: wifi: ath12k: fix node corruption in ar->arvifs list
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: fix node corruption in ar->arvifs list
In current WLAN recovery code flow, ath12kcorehalt() only reinitializes the "arvifs" list head. This will cause the list node immediately following the list head to become an invalid list node. Because the prev of that node still points to the list head "arvifs", but the next of the list head "arvifs" no longer points to that list node.
When a WLAN recovery occurs during the execution of a vif removal, and it happens before the spinlockbh(&ar->datalock) in ath12kmacvdevdelete(), listdel() will detect the previously mentioned situation, thereby triggering a kernel panic.
The fix is to remove and reinitialize all vif list nodes from the list head "arvifs" during WLAN halt. The reinitialization is to make the list nodes valid, ensuring that the listdel() in ath12kmacvdevdelete() can execute normally.
Call trace: listdelentryvalidorreport+0xd4/0x100 (P) ath12kmacremovelinkinterface.isra.0+0xf8/0x2e4 [ath12k] ath12kscanvdevcleanwork+0x40/0x164 [ath12k] cfg80211wiphywork+0xfc/0x100 processonework+0x164/0x2d0 workerthread+0x254/0x380 kthread+0xfc/0x100 retfromfork+0x10/0x20
The change is mostly copied from the ath11k patch: https://lore.kernel.org/all/20250320053145.3445187-1-quicstonez@quicinc.com/
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPLSILICONZ-1
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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ubuntu/linux-aws-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1046.49~22.04.1 - Upgrade
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ubuntu/linux-lowlatency-hwe-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-100.100.1~22.04.1 - Upgrade
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ubuntu/linux-nvidia-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1046.49~22.04.1 - Upgrade
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ubuntu/linux-realtimeto a version that resolves this vulnerability.Fixed in 6.8.1-1041.42 - Upgrade
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ubuntu/linux-realtime-6.14to a version that resolves this vulnerability.Fixed in 6.14.0-1012.12~24.04.1 - Upgrade
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ubuntu/linux-aws-fipsto a version that resolves this vulnerability.Fixed in 6.8.0-1046.49+fips1 - Upgrade
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ubuntu/linux-fipsto a version that resolves this vulnerability.Fixed in 6.8.0-100.100+fips1 - Upgrade
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ubuntu/linux-gcp-fipsto a version that resolves this vulnerability.Fixed in 6.8.0-1047.50+fips1 - Compensating control
During WLAN halt in ath12k_core_halt(), remove and reinitialize all vif list nodes from the ar->arvifs list head so the nodes remain valid for list_del() in ath12k_mac_vdev_delete().
Event History
Frequently Asked Questions
What is the severity of CVE-2025-38290?
CVE-2025-38290 has been classified with a severity rating, but you should consult the official CVSS score for precise information.
How do I fix CVE-2025-38290?
To fix CVE-2025-38290, ensure you update your Linux kernel to the latest version that addresses this vulnerability.
What are the potential impacts of CVE-2025-38290?
The potential impacts of CVE-2025-38290 include node corruption within the 'arvifs' list that may affect network functionality.
Which versions of the Linux kernel are affected by CVE-2025-38290?
CVE-2025-38290 affects various versions of the Linux kernel, particularly those using the ath12k driver.
Is there a workaround for CVE-2025-38290?
There are currently no known workarounds for CVE-2025-38290; updating the kernel is the recommended approach.