{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64256", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.773Z", "datePublished": "2026-07-25T08:49:08.676Z", "dateUpdated": "2026-07-25T08:49:08.676Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:49:08.676Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don't wrap around quota ids in dqiterate\n\nLOLLM noticed that q_id is an unsigned 32-bit variable. If it happens\nto be set to XFS_DQ_ID_MAX due to a filesystem that actually has a dquot\nfor ID_MAX, then this addition will truncate to zero and the iteration\nstarts over. Fix this by casting to u64."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/xfs/scrub/dqiterate.c"], "versions": [{"version": "21d7500929c8a0b10e22a6755850c6f9a9280284", "lessThan": "249e311c2ba392ceaf9ebfc145a46922946f069a", "status": "affected", "versionType": "git"}, {"version": "21d7500929c8a0b10e22a6755850c6f9a9280284", "lessThan": "d1c4c40599c376aeb0c93068a2ae344e79ee4b90", "status": "affected", "versionType": "git"}, {"version": "21d7500929c8a0b10e22a6755850c6f9a9280284", "lessThan": "2b14fe1e0924c6b901f4256456342569c5397abe", "status": "affected", "versionType": "git"}, {"version": "21d7500929c8a0b10e22a6755850c6f9a9280284", "lessThan": "d766e4e5e85d829629c3ba503802fe1303d7b591", "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/scrub/dqiterate.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc4", "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": "6.8", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.2-rc4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/249e311c2ba392ceaf9ebfc145a46922946f069a"}, {"url": "https://git.kernel.org/stable/c/d1c4c40599c376aeb0c93068a2ae344e79ee4b90"}, {"url": "https://git.kernel.org/stable/c/2b14fe1e0924c6b901f4256456342569c5397abe"}, {"url": "https://git.kernel.org/stable/c/d766e4e5e85d829629c3ba503802fe1303d7b591"}], "title": "xfs: don't wrap around quota ids in dqiterate", "x_generator": {"engine": "bippy-1.2.0"}}}}

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