CVE-2024-43881

Summary

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

wifi: ath12k: change DMA direction while mapping reinjected packets

For fragmented packets, ath12k reassembles each fragment as a normal packet and then reinjects it into HW ring. In this case, the DMA direction should be DMA_TO_DEVICE, not DMA_FROM_DEVICE. Otherwise, an invalid payload may be reinjected into the HW and subsequently delivered to the host.

Given that arbitrary memory can be allocated to the skb buffer, knowledge about the data contained in the reinjected buffer is lacking. Consequently, there’s a risk of private information being leaked.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd889913205cf7ebda905b1e62c5867ed4e39f6c2 < e99d9b16ff153de9540073239d24adc3b0a3a997affected
LinuxLinuxd889913205cf7ebda905b1e62c5867ed4e39f6c2 < 6925320fcd40d8042d32bf4ede8248e7a5315c3baffected
LinuxLinuxd889913205cf7ebda905b1e62c5867ed4e39f6c2 < 33322e3ef07409278a18c6919c448e369d66a18eaffected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.6.44 <= 6.6.*unaffected
LinuxLinux6.10.3 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References