CVE-2025-39750 (GCVE-0-2025-39750)
Vulnerability from cvelistv5
Published
2025-09-11 16:52
Modified
2026-08-05 12:04
Severity ?
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Correct tid cleanup when tid setup fails Currently, if any error occurs during ath12k_dp_rx_peer_tid_setup(), the tid value is already incremented, even though the corresponding TID is not actually allocated. Proceed to ath12k_dp_rx_peer_tid_delete() starting from unallocated tid, which might leads to freeing unallocated TID and cause potential crash or out-of-bounds access. Hence, fix by correctly decrementing tid before cleanup to match only the successfully allocated TIDs. Also, remove tid-- from failure case of ath12k_dp_rx_peer_frag_setup(), as decrementing the tid before cleanup in loop will take care of this. Compile tested only.
References
Impacted products
Vendor Product Version
Linux Linux Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath12k/dp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath12k/dp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.43",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.103",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.43",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.11",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.2",
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                  "versionEndExcluding": "6.17",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: Correct tid cleanup when tid setup fails\n\nCurrently, if any error occurs during ath12k_dp_rx_peer_tid_setup(),\nthe tid value is already incremented, even though the corresponding\nTID is not actually allocated. Proceed to\nath12k_dp_rx_peer_tid_delete() starting from unallocated tid,\nwhich might leads to freeing unallocated TID and cause potential\ncrash or out-of-bounds access.\n\nHence, fix by correctly decrementing tid before cleanup to match only\nthe successfully allocated TIDs.\n\nAlso, remove tid-- from failure case of ath12k_dp_rx_peer_frag_setup(),\nas decrementing the tid before cleanup in loop will take care of this.\n\nCompile tested only."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The vulnerable path is entered from the ath12k WiFi driver\u0027s mac80211 `sta_state` callback when a peer is added in response to received 802.11 management frames, so the attacker must be within radio range of the AP/STA, i.e. on the same wireless segment.\nAC:L - The attacker controls both sides of the trigger \u2014 repeatedly transmitting auth/assoc frames from spoofed MACs (each allocating 17 GFP_ATOMIC REO queue descriptors) and immediately deauthing to race peer teardown against the 17-TID setup loop \u2014 so the `ath12k_dp_rx_peer_frag_setup()` failure needed to reach `rx_tid[17]` is attacker-driven rather than beyond their influence.\nPR:N - In AP mode mac80211/hostapd add the station (NOTEXIST\u2192NONE) upon an 802.11 Authentication frame, before any credentials, PSK, or 802.1X exchange is verified, so the attacker needs no account or key on the target.\nUI:N - Exploitation requires only that the attacker transmit 802.11 frames to a listening ath12k AP; no action by a local user or administrator is needed.\nS:U - The out-of-bounds read/write and invalid free corrupt kernel heap memory managed by the same kernel security authority; there is no crossing into a hypervisor, guest, or sandbox boundary.\nC:H - `ath12k_dp_reo_cmd_send()` performs a 128-byte `memcpy` from `\u0026peer-\u003erx_tid[17]`, copying out-of-bounds heap contents (including kernel pointers and DMA addresses) into a cached REO command element, and the OOB-read address is also handed to hardware \u2014 an unbounded adjacent-memory read.\nI:H - The bug yields out-of-bounds writes past `peer-\u003erx_tid[]` (`vaddr = NULL`, `active = false`, plus an 8-byte write one entry past the REO LUT), a `kfree()` of a pointer synthesized from out-of-bounds bytes (arbitrary-free primitive), and a REO hardware queue-descriptor write at an attacker-influenced physical address \u2014 all usable for control-flow-relevant heap corruption.\nA:H - Freeing a wild pointer and `dma_unmap_single()` on a bogus DMA address reliably produce slab corruption, IOMMU faults, or an oops/panic, taking down the kernel and the WiFi interface."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:04:58.907Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/30cad87978057516c93467516bc481a3eacfd66a"
        },
        {
          "url": "https://git.kernel.org/stable/c/2ef17d1476ab26bce89764e2f16833d7f52acc38"
        },
        {
          "url": "https://git.kernel.org/stable/c/907c630e58af9e86e215f3951c7b287bd86d0f15"
        },
        {
          "url": "https://git.kernel.org/stable/c/6301fe4f209165334d251a1c6da8ae47f93cb32c"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a2bf707270f897ab8077baee8ed5842a5321686"
        }
      ],
      "title": "wifi: ath12k: Correct tid cleanup when tid setup fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39750",
    "datePublished": "2025-09-11T16:52:21.917Z",
    "dateReserved": "2025-04-16T07:20:57.125Z",
    "dateUpdated": "2026-08-05T12:04:58.907Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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