{"id":"CVE-2026-80538","state":"PUBLISHED","title":"xfs: propagate errors from xfs_rtginode_load","description":"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.","publishedAt":"2026-08-26T14:37:12.767Z","updatedAt":"2026-08-27T05:01:28.422Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ae897e0bed0f5461a6b1c3259c7d899759ba2a62","status":"affected","lessThan":"ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7","versionType":"git"},{"version":"ae897e0bed0f5461a6b1c3259c7d899759ba2a62","status":"affected","lessThan":"61c5165f02deb2eed9b6b539bb279e6629fee652","versionType":"git"},{"version":"ae897e0bed0f5461a6b1c3259c7d899759ba2a62","status":"affected","lessThan":"b7e53968cb8882c2d276429ea8550848a4940874","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/xfs_rtalloc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.46","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.10","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/xfs_rtalloc.c"]}],"references":["https://git.kernel.org/stable/c/ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7","https://git.kernel.org/stable/c/61c5165f02deb2eed9b6b539bb279e6629fee652","https://git.kernel.org/stable/c/b7e53968cb8882c2d276429ea8550848a4940874"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80538.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80538","state":"PUBLISHED","datePublished":"2026-08-26T14:37:12.767Z","dateUpdated":"2026-08-27T05:01:28.422Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.765Z"},"containers":{"cna":{"title":"xfs: propagate errors from xfs_rtginode_load","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ae897e0bed0f5461a6b1c3259c7d899759ba2a62","status":"affected","lessThan":"ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7","versionType":"git"},{"version":"ae897e0bed0f5461a6b1c3259c7d899759ba2a62","status":"affected","lessThan":"61c5165f02deb2eed9b6b539bb279e6629fee652","versionType":"git"},{"version":"ae897e0bed0f5461a6b1c3259c7d899759ba2a62","status":"affected","lessThan":"b7e53968cb8882c2d276429ea8550848a4940874","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/xfs_rtalloc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.46","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.10","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/xfs_rtalloc.c"]}],"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"}],"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."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-27T05:01:28.422Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}