Vulnerability-Lookup

FKIE_CVE-2026-80538

Vulnerability from fkie_nvd - Published: 2026-08-26 15:17 - Updated: 2026-08-27 06:17

Severity

7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: xfs: propagate errors from xfs_rtginode_load xfs_rtginode_ensure() treats every xfs_rtginode_load() error other than -ENOENT as success. This can leave the realtime group inode unset after an I/O, allocation, or corruption error. Growfs then continues as though the inode had been loaded. Only -ENOENT means that the inode needs to be created. Return all other errors to the growfs caller.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/61c5165f02deb2eed9b6b539bb279e6629fee652
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b7e53968cb8882c2d276429ea8550848a4940874
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/xfs_rtalloc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7",
              "status": "affected",
              "version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
              "versionType": "git"
            },
            {
              "lessThan": "61c5165f02deb2eed9b6b539bb279e6629fee652",
              "status": "affected",
              "version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
              "versionType": "git"
            },
            {
              "lessThan": "b7e53968cb8882c2d276429ea8550848a4940874",
              "status": "affected",
              "version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/xfs_rtalloc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: propagate errors from xfs_rtginode_load\n\nxfs_rtginode_ensure() treats every xfs_rtginode_load() error other than\n-ENOENT as success.  This can leave the realtime group inode unset after an\nI/O, allocation, or corruption error.  Growfs then continues as though the\ninode had been loaded.\n\nOnly -ENOENT means that the inode needs to be created.  Return all other\nerrors to the growfs caller."
    }
  ],
  "id": "CVE-2026-80538",
  "lastModified": "2026-08-27T06:17:34.550",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-26T15:17:08.017",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/61c5165f02deb2eed9b6b539bb279e6629fee652"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b7e53968cb8882c2d276429ea8550848a4940874"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-80538 (GCVE-0-2026-80538)

Vulnerability from cvelistv5 – Published: 2026-08-26 14:37 – Updated: 2026-08-27 05:01

Title

xfs: propagate errors from xfs_rtginode_load

Summary

Severity

7.1 (High)


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

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/ec19cea4ef1ce9d6e…
https://git.kernel.org/stable/c/61c5165f02deb2eed…
https://git.kernel.org/stable/c/b7e53968cb8882c2d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ae897e0bed0f5461a6b1c3259c7d899759ba2a62 , < ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7 (git) Affected: ae897e0bed0f5461a6b1c3259c7d899759ba2a62 , < 61c5165f02deb2eed9b6b539bb279e6629fee652 (git) Affected: ae897e0bed0f5461a6b1c3259c7d899759ba2a62 , < b7e53968cb8882c2d276429ea8550848a4940874 (git)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 6.18.46 , ≤ 6.18.* (semver) Unaffected: 7.1.10 , ≤ 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/xfs/xfs_rtalloc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7",
              "status": "affected",
              "version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
              "versionType": "git"
            },
            {
              "lessThan": "61c5165f02deb2eed9b6b539bb279e6629fee652",
              "status": "affected",
              "version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
              "versionType": "git"
            },
            {
              "lessThan": "b7e53968cb8882c2d276429ea8550848a4940874",
              "status": "affected",
              "version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/xfs_rtalloc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "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": "6.18.46",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.10",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: propagate errors from xfs_rtginode_load\n\nxfs_rtginode_ensure() treats every xfs_rtginode_load() error other than\n-ENOENT as success.  This can leave the realtime group inode unset after an\nI/O, allocation, or corruption error.  Growfs then continues as though the\ninode had been loaded.\n\nOnly -ENOENT means that the inode needs to be created.  Return all other\nerrors to the growfs caller."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached only through the local XFS_IOC_FSGROWFSRT ioctl (xfs_file_ioctl -\u003e xfs_growfs_rt -\u003e xfs_growfs_rtg -\u003e xfs_rtginode_ensure); it is not exposed via NFS, ksmbd, or any network packet handler.\nAC:L - A growfs caller can reliably force xfs_rtginode_load() to return a non-ENOENT error using attacker-influenced conditions such as memory pressure, RT device/metadata I/O faults, or corrupted rtgroup inode state, deterministically entering the swallowed-error path.\nPR:L - xfs_growfs_rt() gates on capable(CAP_SYS_ADMIN), which is satisfied by user-namespace root per kernel CNA guidance; only a writable file descriptor on a realtime-enabled XFS mount is additionally required, not init-namespace root.\nUI:N - The attacker with the required capability and mount write access issues XFS_IOC_FSGROWFSRT directly; no separate victim action such as opening files or mounting the filesystem is needed beyond that.\nS:U - Impact is a host kernel crash or on-disk XFS realtime metadata corruption within the same kernel security domain; it does not cross a VM, container, or IOMMU isolation boundary.\nC:N - The failure mode is an unset rtgroup inode pointer followed by NULL xfs_inode dereference during growfs; there is no use-after-free, out-of-bounds read, or other kernel memory disclosure primitive.\nI:H - Continuing growfs after rtgroup inode load failures lets superblock and realtime bitmap/summary update paths proceed while critical metadata inodes were never loaded, corrupting on-disk XFS realtime metadata integrity (notably on zoned growfs paths that can commit before crashing).\nA:H - When growfs proceeds with NULL rtgroup bitmap or summary inodes, xfs_growfs_rt_bmblock and xfs_rtfile_initialize_blocks dereference the missing xfs_inode and trigger a kernel oops or panic, denying system availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T05:01:28.422Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/61c5165f02deb2eed9b6b539bb279e6629fee652"
        },
        {
          "url": "https://git.kernel.org/stable/c/b7e53968cb8882c2d276429ea8550848a4940874"
        }
      ],
      "title": "xfs: propagate errors from xfs_rtginode_load",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80538",
    "datePublished": "2026-08-26T14:37:12.767Z",
    "dateReserved": "2026-08-26T14:34:25.765Z",
    "dateUpdated": "2026-08-27T05:01:28.422Z",
    "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.
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.