Vulnerability-Lookup

GHSA-8J7J-4M45-JV28

Vulnerability from github – Published: 2024-10-21 12:30 – Updated: 2024-10-24 15:31

Details

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

wifi: mt76: mt7996: use hweight16 to get correct tx antenna

The chainmask is u16 so using hweight8 cannot get correct tx_ant. Without this patch, the tx_ant of band 2 would be -1 and lead to the following issue: BUG: KASAN: stack-out-of-bounds in mt7996_mcu_add_sta+0x12e0/0x16e0 [mt7996e]

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2024-47714"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T12:15:07Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: use hweight16 to get correct tx antenna\n\nThe chainmask is u16 so using hweight8 cannot get correct tx_ant.\nWithout this patch, the tx_ant of band 2 would be -1 and lead to the\nfollowing issue:\nBUG: KASAN: stack-out-of-bounds in mt7996_mcu_add_sta+0x12e0/0x16e0 [mt7996e]",
  "id": "GHSA-8j7j-4m45-jv28",
  "modified": "2024-10-24T15:31:08Z",
  "published": "2024-10-21T12:30:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47714"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33954930870c18ec549e4bca0eeff43e252cb740"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50d87e3b70980abc090676b6b4703fcbd96221f9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f51fc8a9e2fd96363d8ec3f4ee4b78dd64754e3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f98c3de92bb05dac4a4969df8a4595ed380b4604"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-47714 (GCVE-0-2024-47714)

Vulnerability from cvelistv5 – Published: 2024-10-21 11:53 – Updated: 2026-08-05 11:39

Title

wifi: mt76: mt7996: use hweight16 to get correct tx antenna

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: use hweight16 to get correct tx antenna The chainmask is u16 so using hweight8 cannot get correct tx_ant. Without this patch, the tx_ant of band 2 would be -1 and lead to the following issue: BUG: KASAN: stack-out-of-bounds in mt7996_mcu_add_sta+0x12e0/0x16e0 [mt7996e]

Severity

7.6 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-21 13:02 UTC

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/50d87e3b70980abc0…
https://git.kernel.org/stable/c/8f51fc8a9e2fd9636…
https://git.kernel.org/stable/c/33954930870c18ec5…
https://git.kernel.org/stable/c/f98c3de92bb05dac4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 50d87e3b70980abc090676b6b4703fcbd96221f9 (git) Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 8f51fc8a9e2fd96363d8ec3f4ee4b78dd64754e3 (git) Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 33954930870c18ec549e4bca0eeff43e252cb740 (git) Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < f98c3de92bb05dac4a4969df8a4595ed380b4604 (git)
Linux	Linux	Affected: 6.2 Unaffected: 0 , < 6.2 (semver) Unaffected: 6.6.54 , ≤ 6.6.* (semver) Unaffected: 6.10.13 , ≤ 6.10.* (semver) Unaffected: 6.11.2 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

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    "adp": [
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-47714",
                "options": [
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                    "Exploitation": "none"
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-21T13:02:52.416293Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: use hweight16 to get correct tx antenna\n\nThe chainmask is u16 so using hweight8 cannot get correct tx_ant.\nWithout this patch, the tx_ant of band 2 would be -1 and lead to the\nfollowing issue:\nBUG: KASAN: stack-out-of-bounds in mt7996_mcu_add_sta+0x12e0/0x16e0 [mt7996e]"
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          "scenarios": [
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              "lang": "en",
              "value": "AV:A - The vulnerable path is entered from mac80211 station insertion driven by an over-the-air association from a nearby 802.11 peer, with the trigger conditions (EHT/HE/VHT beamforming capability bits, bandwidth, MCS/NSS fields) taken straight from the attacker\u0027s association request. This requires radio proximity to the AP\u0027s 6 GHz band rather than routable network access, which is Adjacent per the WiFi frame-injection guidance.\nAC:L - On the affected hardware the miscount is deterministic \u2014 band 2\u0027s chainmask sits entirely above bit 7, so hweight8() always returns 0 and tx_ant is always -1 \u2014 and the attacker simply associates while advertising SU-beamformee support to reach matrix[-1][ncol] every time. There is no race, no memory-layout requirement, and the attempt can be repeated indefinitely by re-associating.\nPR:N - In AP mode hostapd creates the station object at association, before the 4-way handshake or any credential validation, so mt7996_mac_sta_add() \u2192 mt7996_mcu_sta_bfer_tlv() runs for an attacker holding no key and no account on the target. Open and mesh/IBSS deployments have no authentication gate at all.\nUI:N - The attacker performs the association itself and the AP\u0027s kernel processes it automatically; no action by any user or administrator on the victim system is needed.\nS:U - The out-of-bounds read and the resulting bogus firmware-command fields stay within the kernel driver\u0027s own security authority, crossing no VM, IOMMU, or sandbox boundary.\nC:L - matrix[-1][ncol] reads adjacent kernel stack memory outside the const array, exposing stack contents that are then written into the sta_rec_bf TLV and transmitted to the WiFi firmware. The read is strictly bounded to the four bytes immediately preceding a 16-byte object at a fixed negative offset with no attacker-directed address and no channel returning the data over the air, so it is a small bounded leak rather than arbitrary read.\nI:L - The uninitialized out-of-bounds byte and the underflowed antenna count (ibf_nrow = 0xFF, mem_20m/mem_total derived from stray stack data) are programmed into the chip\u0027s beamforming profile via the MCU STA_REC_UPDATE command, a remotely-influenced corruption of device configuration state. No kernel memory is written out of bounds and no control-flow influence is available, so the modification is limited rather than arbitrary.\nA:H - The condition is a KASAN-detected stack-out-of-bounds in mt7996_mcu_add_sta(), which oopses and panics outright on kernels built with KASAN plus panic_on_warn or kasan.fault=panic \u2014 common in vendor and hardened builds. Independently, feeding out-of-range beamforming memory parameters and a 0xFF antenna count to the WiFi MCU can wedge the firmware and take the radio down, and the attacker can retrigger it on every association."
            }
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.