wifi: ath11k: fix deinitialization of firmware resources

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2023-53532
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-10-01 12:15:57 UTC
Updated2026-11-05 21:17:25 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix deinitialization of firmware resources Currently, in ath11k_ahb_fw_resources_init(), iommu domain mapping is done only for the chipsets having fixed firmware memory. Also, for such chipsets, mapping is done only if it does not have TrustZone support. During deinitialization, only if TrustZone support is not there, iommu is unmapped back. However, for non fixed firmware memory chipsets, TrustZone support is not there and this makes the condition check to true and it tries to unmap the memory which was not mapped during initialization. This leads to the following trace - [ 83.198790] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 [ 83.259537] Modules linked in: ath11k_ahb ath11k qmi_helpers .. snip .. [ 83.280286] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 83.287228] pc : __iommu_unmap+0x30/0x140 [ 83.293907] lr : iommu_unmap+0x5c/0xa4 [ 83.298072] sp : ffff80000b3abad0 .. snip .. [ 83.369175] Call trace: [ 83.376282] __iommu_unmap+0x30/0x140 [ 83.378541] iommu_unmap+0x5c/0xa4 [ 83.382360] ath11k_ahb_fw_resource_deinit.part.12+0x2c/0xac [ath11k_ahb] [ 83.385666] ath11k_ahb_free_resources+0x140/0x17c [ath11k_ahb] [ 83.392521] ath11k_ahb_shutdown+0x34/0x40 [ath11k_ahb] [ 83.398248] platform_shutdown+0x20/0x2c [ 83.403455] device_shutdown+0x16c/0x1c4 [ 83.407621] kernel_restart_prepare+0x34/0x3c [ 83.411529] kernel_restart+0x14/0x74 [ 83.415781] __do_sys_reboot+0x1c4/0x22c [ 83.419427] __arm64_sys_reboot+0x1c/0x24 [ 83.423420] invoke_syscall+0x44/0xfc [ 83.427326] el0_svc_common.constprop.3+0xac/0xe8 [ 83.430974] do_el0_svc+0xa0/0xa8 [ 83.435659] el0_svc+0x1c/0x44 [ 83.438957] el0t_64_sync_handler+0x60/0x144 [ 83.441910] el0t_64_sync+0x15c/0x160 [ 83.446343] Code: aa0103f4 f9400001 f90027a1 d2800001 (f94006a0) [ 83.449903] ---[ end trace 0000000000000000 ]--- This can be reproduced by probing an AHB chipset which is not having a fixed memory region. During reboot (or rmmod) trace can be seen. Fix this issue by adding a condition check on firmware fixed memory hw_param as done in the counter initialization function. Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-908

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected f9eec4947add999e1251bf14365a48a655b786a4 0324300dce3412d4737b4ec5898d0188495a7caa git Not specified
CNA Linux Linux affected f9eec4947add999e1251bf14365a48a655b786a4 8faf862d81ab197757761e87d0a99fbb96ab2cf0 git Not specified
CNA Linux Linux affected f9eec4947add999e1251bf14365a48a655b786a4 a1548363582a8066edd4986f839d785f13dda3aa git Not specified
CNA Linux Linux affected f9eec4947add999e1251bf14365a48a655b786a4 5a78ac33e3cb8822da64dd1af196e83664b332b0 git Not specified
CNA Linux Linux affected 5.19 Not specified
CNA Linux Linux unaffected 5.19 semver Not specified
CNA Linux Linux unaffected 6.1.28 6.1.* semver Not specified
CNA Linux Linux unaffected 6.2.15 6.2.* semver Not specified
CNA Linux Linux unaffected 6.3.2 6.3.* semver Not specified
CNA Linux Linux unaffected 6.4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a1548363582a8066edd4986f839d785f13dda3aa 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0324300dce3412d4737b4ec5898d0188495a7caa 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8faf862d81ab197757761e87d0a99fbb96ab2cf0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5a78ac33e3cb8822da64dd1af196e83664b332b0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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