159 lines
8.5 KiB
JSON
159 lines
8.5 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-80538",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-26T14:34:25.765Z",
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"datePublished": "2026-08-26T14:37:12.767Z",
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"dateUpdated": "2026-08-27T05:01:28.422Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-27T05:01:28.422Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/xfs/xfs_rtalloc.c"
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],
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"versions": [
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{
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"version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
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"lessThan": "ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
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"lessThan": "61c5165f02deb2eed9b6b539bb279e6629fee652",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
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"lessThan": "b7e53968cb8882c2d276429ea8550848a4940874",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/xfs/xfs_rtalloc.c"
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],
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"versions": [
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{
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"version": "6.13",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.13",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.46",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.10",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.13",
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"versionEndExcluding": "6.18.46"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.13",
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"versionEndExcluding": "7.1.10"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.13",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7"
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},
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{
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"url": "https://git.kernel.org/stable/c/61c5165f02deb2eed9b6b539bb279e6629fee652"
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},
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{
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"url": "https://git.kernel.org/stable/c/b7e53968cb8882c2d276429ea8550848a4940874"
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}
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],
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"title": "xfs: propagate errors from xfs_rtginode_load",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |