Vulnerability-Lookup

GHSA-2WJR-8GX8-Q69W

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33

Details

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

afs: Fix error code in afs_extract_vl_addrs()

The error codes on these paths are only set on the first iteration through the loop. Set the correct error code on every iteration.

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-72378"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:11Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix error code in afs_extract_vl_addrs()\n\nThe error codes on these paths are only set on the first iteration\nthrough the loop.  Set the correct error code on every iteration.",
  "id": "GHSA-2wjr-8gx8-q69w",
  "modified": "2026-08-17T06:33:26Z",
  "published": "2026-08-15T06:32:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72378"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4897cb71d4ab1f7e1a214adb1e4b80176702368d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e0b047848a855f2c933a6439f76a01743ba5620"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ce6737a975ea3e0dc2e5946628d233779ca0caf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8530206911fd66ad739ca5ce95f1d069f3d42204"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ad9016e3333c3c1f9284a253ff0658369e07aac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bdcd80ff12939d172043fac5eb822b92366a1bab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb33dd2968588c78fad78dec19f61cabe5785494"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f70fbf2b974b63a7042705c2b0464cb8c97e9f34"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-72378 (GCVE-0-2026-72378)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:56 – Updated: 2026-08-17 05:43

Title

afs: Fix error code in afs_extract_vl_addrs()

Summary

In the Linux kernel, the following vulnerability has been resolved: afs: Fix error code in afs_extract_vl_addrs() The error codes on these paths are only set on the first iteration through the loop. Set the correct error code on every iteration.

Severity

7.5 (High)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/7ce6737a975ea3e0d…
https://git.kernel.org/stable/c/4e0b047848a855f2c…
https://git.kernel.org/stable/c/f70fbf2b974b63a70…
https://git.kernel.org/stable/c/9ad9016e3333c3c1f…
https://git.kernel.org/stable/c/cb33dd2968588c78f…
https://git.kernel.org/stable/c/8530206911fd66ad7…
https://git.kernel.org/stable/c/bdcd80ff12939d172…
https://git.kernel.org/stable/c/4897cb71d4ab1f7e1…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0a5143f2f89cc88d8a3eada8e8ccd86c1e988257 , < 7ce6737a975ea3e0dc2e5946628d233779ca0caf (git) Affected: 0a5143f2f89cc88d8a3eada8e8ccd86c1e988257 , < 4e0b047848a855f2c933a6439f76a01743ba5620 (git) Affected: 0a5143f2f89cc88d8a3eada8e8ccd86c1e988257 , < f70fbf2b974b63a7042705c2b0464cb8c97e9f34 (git) Affected: 0a5143f2f89cc88d8a3eada8e8ccd86c1e988257 , < 9ad9016e3333c3c1f9284a253ff0658369e07aac (git) Affected: 0a5143f2f89cc88d8a3eada8e8ccd86c1e988257 , < cb33dd2968588c78fad78dec19f61cabe5785494 (git) Affected: 0a5143f2f89cc88d8a3eada8e8ccd86c1e988257 , < 8530206911fd66ad739ca5ce95f1d069f3d42204 (git) Affected: 0a5143f2f89cc88d8a3eada8e8ccd86c1e988257 , < bdcd80ff12939d172043fac5eb822b92366a1bab (git) Affected: 0a5143f2f89cc88d8a3eada8e8ccd86c1e988257 , < 4897cb71d4ab1f7e1a214adb1e4b80176702368d (git)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/afs/vl_list.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7ce6737a975ea3e0dc2e5946628d233779ca0caf",
              "status": "affected",
              "version": "0a5143f2f89cc88d8a3eada8e8ccd86c1e988257",
              "versionType": "git"
            },
            {
              "lessThan": "4e0b047848a855f2c933a6439f76a01743ba5620",
              "status": "affected",
              "version": "0a5143f2f89cc88d8a3eada8e8ccd86c1e988257",
              "versionType": "git"
            },
            {
              "lessThan": "f70fbf2b974b63a7042705c2b0464cb8c97e9f34",
              "status": "affected",
              "version": "0a5143f2f89cc88d8a3eada8e8ccd86c1e988257",
              "versionType": "git"
            },
            {
              "lessThan": "9ad9016e3333c3c1f9284a253ff0658369e07aac",
              "status": "affected",
              "version": "0a5143f2f89cc88d8a3eada8e8ccd86c1e988257",
              "versionType": "git"
            },
            {
              "lessThan": "cb33dd2968588c78fad78dec19f61cabe5785494",
              "status": "affected",
              "version": "0a5143f2f89cc88d8a3eada8e8ccd86c1e988257",
              "versionType": "git"
            },
            {
              "lessThan": "8530206911fd66ad739ca5ce95f1d069f3d42204",
              "status": "affected",
              "version": "0a5143f2f89cc88d8a3eada8e8ccd86c1e988257",
              "versionType": "git"
            },
            {
              "lessThan": "bdcd80ff12939d172043fac5eb822b92366a1bab",
              "status": "affected",
              "version": "0a5143f2f89cc88d8a3eada8e8ccd86c1e988257",
              "versionType": "git"
            },
            {
              "lessThan": "4897cb71d4ab1f7e1a214adb1e4b80176702368d",
              "status": "affected",
              "version": "0a5143f2f89cc88d8a3eada8e8ccd86c1e988257",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/afs/vl_list.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.261",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.212",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix error code in afs_extract_vl_addrs()\n\nThe error codes on these paths are only set on the first iteration\nthrough the loop.  Set the correct error code on every iteration."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - Malformed data reaches afs_extract_vl_addrs() from DNS AFSDB server-list replies fetched over the network via dns_query()/request_key upcall during afs_dns_query() cell VL lookups and periodic TTL refresh.\nAC:L - An attacker who can supply the DNS server-list payload can reliably trigger the bug by encoding two or more addresses with a valid first entry and a truncated second IPv4/IPv6 record, forcing the stale ret=0 error path on iteration two or later.\nPR:N - No local account or kernel capabilities are required on the victim; a network-positioned attacker can deliver the malicious binary DNS server-list response whenever the kAFS client resolves an AFSDB record for a targeted cell name.\nUI:N - Exploitation does not require victim interaction at trigger time because kAFS automatically re-queries DNS on cell setup and TTL expiry through afs_update_cell(), so a poisoned response can crash the kernel without further user action.\nS:U - The flaw is a kernel NULL-pointer dereference in AFS DNS parsing that crashes the local host; it does not cross a VM, container, or IOMMU security boundary to affect a different authority.\nC:N - The failure mode is returning ERR_PTR(0) after freeing the address list, causing a NULL dereference in the caller; there is no out-of-bounds read, use-after-free reuse, or other memory disclosure primitive.\nI:N - Impact is limited to a kernel oops from writing addrs-\u003esource on a NULL pointer after a parse error is mishandled; no attacker-controlled memory corruption or arbitrary write primitive is established.\nA:H - The NULL pointer dereference in afs_extract_vlserver_list() runs in the kAFS cell manager workqueue during DNS parsing and causes a kernel oops or panic, fully denying system availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:43:29.813Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7ce6737a975ea3e0dc2e5946628d233779ca0caf"
        },
        {
          "url": "https://git.kernel.org/stable/c/4e0b047848a855f2c933a6439f76a01743ba5620"
        },
        {
          "url": "https://git.kernel.org/stable/c/f70fbf2b974b63a7042705c2b0464cb8c97e9f34"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ad9016e3333c3c1f9284a253ff0658369e07aac"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb33dd2968588c78fad78dec19f61cabe5785494"
        },
        {
          "url": "https://git.kernel.org/stable/c/8530206911fd66ad739ca5ce95f1d069f3d42204"
        },
        {
          "url": "https://git.kernel.org/stable/c/bdcd80ff12939d172043fac5eb822b92366a1bab"
        },
        {
          "url": "https://git.kernel.org/stable/c/4897cb71d4ab1f7e1a214adb1e4b80176702368d"
        }
      ],
      "title": "afs: Fix error code in afs_extract_vl_addrs()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72378",
    "datePublished": "2026-08-15T05:56:11.641Z",
    "dateReserved": "2026-08-09T03:40:39.922Z",
    "dateUpdated": "2026-08-17T05:43:29.813Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-2WJR-8GX8-Q69W

CVE-2026-72378 (GCVE-0-2026-72378)

Tags

Sightings

Nomenclature