CVE-2025-38317 (GCVE-0-2025-38317)

Vulnerability from cvelistv5 – Published: 2025-07-10 07:42 – Updated: 2026-08-05 12:01
VLAI
Title
wifi: ath12k: Fix buffer overflow in debugfs
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Fix buffer overflow in debugfs If the user tries to write more than 32 bytes then it results in memory corruption. Fortunately, this is debugfs so it's limited to root users.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3f73c24f28b317f22df7870c25ff82f1d625c6c2 , < 0c57aa8ef94cffc5c2d68230e19329a03e71a94f (git)
Affected: 3f73c24f28b317f22df7870c25ff82f1d625c6c2 , < 8c4a200d03574bfcbf54fdb7ba5968b58ad2e0b3 (git)
Affected: 3f73c24f28b317f22df7870c25ff82f1d625c6c2 , < 8c7a5031a6b0d42e640fbd2d5d05f61f74e32dce (git)
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Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.34 , ≤ 6.12.* (semver)
Unaffected: 6.15.3 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c"
          ],
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              "value": "AV:L - The vulnerability is reached only through a `write(2)` syscall on the local debugfs file `htt_stats_type` under the ath12k pdev directory. There is no network or over-the-air path to `ath12k_write_htt_stats_type()`.\nAC:L - A single unconditional `write()` with a length greater than 32 bytes deterministically overflows the `kzalloc(32)` buffer; there is no race, timing window, or memory-layout precondition outside the attacker\u0027s control. The attacker fully controls both the overflow length and every overflowed byte.\nPR:L - The debugfs node is mode 0600, but debugfs `uid=`/`gid=`/`mode=` mount options and vendor chown policies commonly delegate debugfs access to non-root system accounts on exactly the embedded/Android-class ath12k platforms (IPQ5332 APs, WCN7850 devices), so a low-privileged local account is a realistic attacker. This is consistent with prior kernel CNA debugfs scoring (CVE-2026-46190, CVE-2026-43380, CVE-2026-64251).\nUI:N - The attacker triggers the overflow entirely on their own by writing to the debugfs file; no victim action, mount, or interaction is required.\nS:U - The heap corruption occurs in kernel memory and is exploited within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The overflow lets the attacker overwrite adjacent kmalloc-32 slab objects with chosen content, corrupting length/pointer/index fields that can be leveraged into an arbitrary kernel-memory read primitive and disclosure of arbitrary kernel data.\nI:H - This is an unbounded heap buffer overflow with fully attacker-controlled data and length into a general-purpose slab cache, giving a direct out-of-bounds write primitive suitable for control-flow hijacking and privilege escalation.\nA:H - Overwriting adjacent slab objects and slab metadata reliably produces slab corruption, oops, or panic, and the attacker can repeat the write at will to guarantee a system crash."
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    "datePublished": "2025-07-10T07:42:23.841Z",
    "dateReserved": "2025-04-16T04:51:24.004Z",
    "dateUpdated": "2026-08-05T12:01:07.527Z",
    "state": "PUBLISHED"
  },
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    "redhat_vex": {
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      "cve": "CVE-2025-38317",
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      "cve": "CVE-2025-38317",
      "id": "CVE-2025-38317",
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      "product_status:recommended": "265",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38317",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38317.json",
      "version": "37"
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.