CVE-2023-52827 (GCVE-0-2023-52827)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:31 – Updated: 2026-08-05 09:11
VLAI
Title
wifi: ath12k: fix possible out-of-bound read in ath12k_htt_pull_ppdu_stats()
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix possible out-of-bound read in ath12k_htt_pull_ppdu_stats() len is extracted from HTT message and could be an unexpected value in case errors happen, so add validation before using to avoid possible out-of-bound read in the following message iteration and parsing. The same issue also applies to ppdu_info->ppdu_stats.common.num_users, so validate it before using too. These are found during code review. Compile test only.
Severity
7.7 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-22 18:23 UTC
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d889913205cf7ebda905b1e62c5867ed4e39f6c2 , < 79527c21a3ce04cffc35ea54f74ee087e532be57 (git)
Affected: d889913205cf7ebda905b1e62c5867ed4e39f6c2 , < c9e44111da221246efb2e623ae1be40a5cf6542c (git)
Affected: d889913205cf7ebda905b1e62c5867ed4e39f6c2 , < 1bc44a505a229bb1dd4957e11aa594edeea3690e (git)
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Linux Linux Affected: 6.3
Unaffected: 0 , < 6.3 (semver)
Unaffected: 6.5.13 , ≤ 6.5.* (semver)
Unaffected: 6.6.3 , ≤ 6.6.* (semver)
Unaffected: 6.7 , ≤ * (original_commit_for_fix)
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      "current_release_date": "2026-07-23T02:17:52Z",
      "cve": "CVE-2023-52827",
      "id": "CVE-2023-52827",
      "initial_release_date": "2024-05-23T15:23:42Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "297",
      "product_status:recommended": "358",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-52827",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52827.json",
      "version": "66"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/79527c21a3ce04cffc35ea54f74ee087e532be57\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/c9e44111da221246efb2e623ae1be40a5cf6542c\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/1bc44a505a229bb1dd4957e11aa594edeea3690e\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T23:11:36.061Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52827\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-22T18:23:07.677346Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:25.646Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"wifi: ath12k: fix possible out-of-bound read in ath12k_htt_pull_ppdu_stats()\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.7, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The vulnerable parser consumes a firmware-generated HTT T2H PPDU_STATS_IND delivered over HTC/CE (ath12k_dp_htt_htc_t2h_msg_handler), not over-the-air 802.11 frame contents; this matches the ath12k host-firmware trust-boundary scoring used for CVE-2023-52829.\\nAC:L - Firmware fully controls the 16-bit payload_size in the HTT header; once an oversized len is supplied the TLV walk past skb-\u003elen is deterministic with no race or uncontrollable memory-layout requirement.\\nPR:N - The HTT T2H handler runs automatically on device-delivered messages during normal radio operation with no OS credential, capability, or authentication check on the path, as with other ath12k firmware CE/HTC parsers.\\nUI:N - PPDU stats indications are requested at mac start and processed in the driver\\u2019s RX completion path without any local user action such as opening a file or changing configuration.\\nS:U - The out-of-bounds read and any resulting crash or corrupted driver stats remain inside the host kernel/driver security authority; no VM, IOMMU, or sandbox boundary is crossed.\\nC:H - An unbounded out-of-bounds read (claimed len up to 65535 versus ~2KB CE skb) walks adjacent kernel memory and copies TLV payloads into ppdu_info; per guidance OOB reads are Confidentiality High.\\nI:N - The live defect is an out-of-bounds read; memcpy destinations in ath12k_htt_tlv_ppdu_stats_parse are fixed-size in-bounds fields, and the num_users OOB-write loops are unreachable because frame_type/tlv_bitmap are never set.\\nA:H - Walking tens of kilobytes past the skb into potentially unmapped kernel memory can trigger a kernel oops/panic, which is Availability High.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d889913205cf7ebda905b1e62c5867ed4e39f6c2\", \"lessThan\": \"79527c21a3ce04cffc35ea54f74ee087e532be57\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d889913205cf7ebda905b1e62c5867ed4e39f6c2\", \"lessThan\": \"c9e44111da221246efb2e623ae1be40a5cf6542c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d889913205cf7ebda905b1e62c5867ed4e39f6c2\", \"lessThan\": \"1bc44a505a229bb1dd4957e11aa594edeea3690e\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/wireless/ath/ath12k/dp_rx.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.3\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.3\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.5.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.5.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/wireless/ath/ath12k/dp_rx.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/79527c21a3ce04cffc35ea54f74ee087e532be57\"}, {\"url\": \"https://git.kernel.org/stable/c/c9e44111da221246efb2e623ae1be40a5cf6542c\"}, {\"url\": \"https://git.kernel.org/stable/c/1bc44a505a229bb1dd4957e11aa594edeea3690e\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: ath12k: fix possible out-of-bound read in ath12k_htt_pull_ppdu_stats()\\n\\nlen is extracted from HTT message and could be an unexpected value in\\ncase errors happen, so add validation before using to avoid possible\\nout-of-bound read in the following message iteration and parsing.\\n\\nThe same issue also applies to ppdu_info-\u003eppdu_stats.common.num_users,\\nso validate it before using too.\\n\\nThese are found during code review.\\n\\nCompile test only.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5.13\", \"versionStartIncluding\": \"6.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.3\", \"versionStartIncluding\": \"6.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7\", \"versionStartIncluding\": \"6.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T09:11:34.320Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52827\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T09:11:34.320Z\", \"dateReserved\": \"2024-05-21T15:19:24.251Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T15:31:30.837Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.