CVE-2026-80538

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80538", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.765Z", "datePublished": "2026-08-26T14:37:12.767Z", "dateUpdated": "2026-08-27T05:01:28.422Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-27T05:01:28.422Z"}, "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": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only through the local XFS_IOC_FSGROWFSRT ioctl (xfs_file_ioctl -> xfs_growfs_rt -> xfs_growfs_rtg -> 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."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/xfs/xfs_rtalloc.c"], "versions": [{"version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62", "lessThan": "ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7", "status": "affected", "versionType": "git"}, {"version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62", "lessThan": "61c5165f02deb2eed9b6b539bb279e6629fee652", "status": "affected", "versionType": "git"}, {"version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62", "lessThan": "b7e53968cb8882c2d276429ea8550848a4940874", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/xfs/xfs_rtalloc.c"], "versions": [{"version": "6.13", "status": "affected"}, {"version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.46", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.10", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.1.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.2"}]}]}], "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"}}}}

{}

{"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"}

{"bugzilla": {"description": "kernel: xfs: propagate errors from xfs_rtginode_load", "id": "2524453", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524453"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-253", "details": ["A flaw was found in the XFS filesystem within the Linux kernel. The `xfs_rtginode_ensure()` function incorrectly handles errors returned by `xfs_rtginode_load()`, treating I/O, allocation, or corruption errors as successful operations. This oversight can result in the realtime group inode remaining unset, causing the `growfs` utility to proceed with an incomplete or corrupted inode. The primary consequence is potential data corruption or system instability during filesystem operations."], "name": "CVE-2026-80538", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80538\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80538\nhttps://lore.kernel.org/linux-cve-announce/2026082605-CVE-2026-80538-30fb@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ae897e0bed0f5461a6b1c3259c7d899759ba2a62,ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ae897e0bed0f5461a6b1c3259c7d899759ba2a62,61c5165f02deb2eed9b6b539bb279e6629fee652)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ae897e0bed0f5461a6b1c3259c7d899759ba2a62,b7e53968cb8882c2d276429ea8550848a4940874)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.46,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.10,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-26T17:45:03.750476+00:00", "updated": "2026-08-27T08:00:07.534344+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}