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Review reviewHigh

CVE-2023-52798

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix dfs radar event locking The ath11k active pdevs are protected by RCU but the DFS radar event handling code calling ath11k_mac_get_ar_by_pdev_id() was not marked as a read-side critical section. Mark the code in question as an RCU read-side critical section to avoid any potential use-after-free issues. Compile tested only.

CVSS
8.8
EPSS
1.02%
60.0% percentile
CISA KEV
Not listed
Published
2024.05.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability1.02%
Technical severityCVSS 8.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix dfs radar event locking The ath11k active pdevs are protected by RCU but the DFS radar event handling code calling ath11k_mac_get_ar_by_pdev_id() was not marked as a read-side critical section. Mark the code in question as an RCU read-side critical section to avoid any potential use-after-free issues. Compile tested only.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= d5c65159f2895379e11ca13f62feabe93278985d < f882f51905517575c9f793a3dff567af90ef9a10, >= d5c65159f2895379e11ca13f62feabe93278985d < 426e718ce9ba60013364a54233feee309356cb82, >= d5c65159f2895379e11ca13f62feabe93278985d < ca420ac4f9451f22347bae44b18ab47ba2c267ec, >= d5c65159f2895379e11ca13f62feabe93278985d < 1fd878e1750190a612b5de2af357cca422ec0822, >= d5c65159f2895379e11ca13f62feabe93278985d < 21ebb0aba580d347e12f01ce5f6e75044427b3d5, >= d5c65159f2895379e11ca13f62feabe93278985d < 3b6c14833165f689cc5928574ebafe52bbce5f1e, >= 5.6, >= 5.6 < 5.10.202, >= 5.11 < 5.15.140, >= 5.16 < 6.1.64, >= 6.2 < 6.5.13, >= 6.6 < 6.6.3
Fixed versions
5.10.202, 5.15.140, 6.1.64, 6.5.13, 6.6.3

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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416