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Review reviewHigh

CVE-2024-43881

Linux Linux, linux kernel

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 pri...

CVSS
7.1
EPSS
0.31%
22.9% percentile
CISA KEV
Not listed
Published
2024.08.21
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.31%
Technical severityCVSS 7.1

Vulnerability overview

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 pri...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < e99d9b16ff153de9540073239d24adc3b0a3a997, >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < 6925320fcd40d8042d32bf4ede8248e7a5315c3b, >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < 33322e3ef07409278a18c6919c448e369d66a18e, >= 6.3, >= 6.3 < 6.6.44, >= 6.7 < 6.10.3
Fixed versions
6.6.44, 6.10.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
CWE-668
CVE-2024-43881 — Linux Linux, linux kernel | SECUFOCUS NOW