Vulnerability-Lookup

GHSA-783H-G799-4R2Q

Vulnerability from github – Published: 2026-07-19 12:30 – Updated: 2026-07-19 12:30

Details

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

wifi: ath11k: fix warning when unbinding

If there is an error during some initialization related to firmware, the buffers dp->tx_ring[i].tx_status are released. However this is released again when the device is unbinded (ath11k_pci), and we get: WARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90 Call Trace: free_large_kmalloc ath11k_dp_free ath11k_core_deinit ath11k_pci_remove ...

The issue is always reproducible from a VM because the MSI addressing initialization is failing.

In order to fix the issue, just set the buffers to NULL after releasing in order to avoid the double free.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63822"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T12:16:55Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: fix warning when unbinding\n\nIf there is an error during some initialization related to firmware,\nthe buffers dp-\u003etx_ring[i].tx_status are released.\nHowever this is released again when the device is unbinded (ath11k_pci),\nand we get:\nWARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90\nCall Trace:\nfree_large_kmalloc\nath11k_dp_free\nath11k_core_deinit\nath11k_pci_remove\n...\n\nThe issue is always reproducible from a VM because the MSI addressing\ninitialization is failing.\n\nIn order to fix the issue, just set the buffers to NULL after releasing in\norder to avoid the double free.",
  "id": "GHSA-783h-g799-4r2q",
  "modified": "2026-07-19T12:30:24Z",
  "published": "2026-07-19T12:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63822"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-63822 (GCVE-0-2026-63822)

Vulnerability from cvelistv5 – Published: 2026-07-19 12:02 – Updated: 2026-07-19 12:02

Title

wifi: ath11k: fix warning when unbinding

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix warning when unbinding If there is an error during some initialization related to firmware, the buffers dp->tx_ring[i].tx_status are released. However this is released again when the device is unbinded (ath11k_pci), and we get: WARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90 Call Trace: free_large_kmalloc ath11k_dp_free ath11k_core_deinit ath11k_pci_remove ... The issue is always reproducible from a VM because the MSI addressing initialization is failing. In order to fix the issue, just set the buffers to NULL after releasing in order to avoid the double free.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/e569a5cb401a26716…
https://git.kernel.org/stable/c/0aa097a370277deab…
https://git.kernel.org/stable/c/0a946abb82f29abe9…
https://git.kernel.org/stable/c/318703b6f71d1a29e…
https://git.kernel.org/stable/c/7b2e62b9080bf4a5f…
https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0…
https://git.kernel.org/stable/c/051f954b94479d722…
https://git.kernel.org/stable/c/8b7a26b6681922a38…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d5c65159f2895379e11ca13f62feabe93278985d , < e569a5cb401a267168621aa9a1e7f07fcc9612c3 (git) Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 0aa097a370277deab5337030b9e2d395742f469c (git) Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 0a946abb82f29abe9a15173b707a449cb039b43e (git) Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 318703b6f71d1a29ee0ac46c32a38f7734d4cfb2 (git) Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13 (git) Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a (git) Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 051f954b94479d72222c9fbc82a3eef4777bca01 (git) Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 8b7a26b6681922a38cd5a7829ace61f8e54df9b7 (git)
Linux	Linux	Affected: 5.6 Unaffected: 0 , < 5.6 (semver) Unaffected: 5.10.260 , ≤ 5.10.* (semver) Unaffected: 5.15.211 , ≤ 5.15.* (semver) Unaffected: 6.1.177 , ≤ 6.1.* (semver) Unaffected: 6.6.144 , ≤ 6.6.* (semver) Unaffected: 6.12.95 , ≤ 6.12.* (semver) Unaffected: 6.18.38 , ≤ 6.18.* (semver) Unaffected: 7.1.3 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath11k/dp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "d5c65159f2895379e11ca13f62feabe93278985d",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "d5c65159f2895379e11ca13f62feabe93278985d",
              "versionType": "git"
            },
            {
              "lessThan": "0a946abb82f29abe9a15173b707a449cb039b43e",
              "status": "affected",
              "version": "d5c65159f2895379e11ca13f62feabe93278985d",
              "versionType": "git"
            },
            {
              "lessThan": "318703b6f71d1a29ee0ac46c32a38f7734d4cfb2",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13",
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              "versionType": "git"
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            {
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              "version": "d5c65159f2895379e11ca13f62feabe93278985d",
              "versionType": "git"
            },
            {
              "lessThan": "051f954b94479d72222c9fbc82a3eef4777bca01",
              "status": "affected",
              "version": "d5c65159f2895379e11ca13f62feabe93278985d",
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              "versionType": "git"
            }
          ]
        },
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.260",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.211",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.177",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.144",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.95",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.38",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                },
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                },
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        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: fix warning when unbinding\n\nIf there is an error during some initialization related to firmware,\nthe buffers dp-\u003etx_ring[i].tx_status are released.\nHowever this is released again when the device is unbinded (ath11k_pci),\nand we get:\nWARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90\nCall Trace:\nfree_large_kmalloc\nath11k_dp_free\nath11k_core_deinit\nath11k_pci_remove\n...\n\nThe issue is always reproducible from a VM because the MSI addressing\ninitialization is failing.\n\nIn order to fix the issue, just set the buffers to NULL after releasing in\norder to avoid the double free."
        }
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      "providerMetadata": {
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        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2"
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        },
        {
          "url": "https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7"
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      ],
      "title": "wifi: ath11k: fix warning when unbinding",
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    "cveId": "CVE-2026-63822",
    "datePublished": "2026-07-19T12:02:19.286Z",
    "dateReserved": "2026-07-19T07:54:57.014Z",
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    "state": "PUBLISHED"
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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.

Action not permitted

GHSA-783H-G799-4R2Q

CVE-2026-63822 (GCVE-0-2026-63822)

Tags

Sightings

Nomenclature