{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72033", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.901Z", "datePublished": "2026-08-15T05:51:55.102Z", "dateUpdated": "2026-08-17T05:39:36.089Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:39:36.089Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\norangefs: keep the readdir entry size 64-bit in fill_from_part()\n\nfill_from_part() computes the size of a directory entry in size_t but\nstores it in a __u32. An entry length near U32_MAX wraps it to a small\nvalue, bypasses the bounds check, and is then used to index the entry,\nreading far past the directory part -- an out-of-bounds read that oopses\nthe kernel.\n\nCompute the size as a u64 so it cannot truncate; the bounds check then\nrejects the entry. The trailer is supplied by the userspace client."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "scenarios": [{"lang": "en", "value": "AV:N - fill_from_part() parses readdir trailer bytes relayed by pvfs2-client-core from an OrangeFS/PVFS server over the cluster network; a malicious or compromised server can supply crafted directory-entry lengths that reach the kernel during getdents on HPC client nodes without local shell access.\nAC:L - An entry length near U32_MAX makes padlen truncate to a small __u32, reliably bypassing the bounds check and forcing the subsequent s[*len] probe; the attacker fully controls the trailer fields and no race, heap layout, or timing condition beyond readdir is required.\nPR:N - A remote malicious OrangeFS/PVFS metadata server needs no account, capabilities, or namespaces on victim HPC compute nodes; once clients mount the filesystem, any process with directory read access can trigger parsing of attacker-supplied trailer bytes.\nUI:N - No victim interaction is required beyond normal automated directory scans (cron, parallel job launchers, monitoring); the attacker does not need a user to mount the filesystem or click anything\u2014only pre-existing cluster mounts to the compromised server.\nS:U - The out-of-bounds read and resulting kernel oops occur entirely within the victim client's kernel address space during VFS readdir processing; there is no inherent crossing of VM, container, IOMMU, or sandbox security boundaries.\nC:H - The integer truncation lets the kernel index gigabytes past the vzalloc readdir part buffer via s[*len], an unbounded out-of-bounds read over adjacent kernel memory before the fault; per CNA guidance OOB reads of this class are rated High.\nI:H - The bounds bypass is a memory-corruption class flaw that can reach beyond the allocated directory part into adjacent kernel heap; even though the immediate access is a read, CNA guidance rates such unchecked OOB probes as High integrity impact due to exploit chaining potential.\nA:H - The maintainer confirmed the out-of-bounds read oopses the kernel; the inflated index can touch unmapped pages far outside the PART_SIZE-limited trailer buffer, causing a kernel fault, panic, or node crash on HPC clients during routine readdir."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/orangefs/dir.c"], "versions": [{"version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "lessThan": "1679780f482feeb82acb5995587d4fb1d1fe82fd", "status": "affected", "versionType": "git"}, {"version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "lessThan": "a72bbb43689591c9d36e3bb45c2d4e688cf92682", "status": "affected", "versionType": "git"}, {"version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "lessThan": "36723b28e3293047f087f4501f1ef4ead418dd84", "status": "affected", "versionType": "git"}, {"version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "lessThan": "07c05601a9a8e5d4481b2a4a16dc0e3c5bc63ad9", "status": "affected", "versionType": "git"}, {"version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "lessThan": "fdf06a1b66ff39664b01c6bb6a2aa98d81e8ebe1", "status": "affected", "versionType": "git"}, {"version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "lessThan": "82fc886e244c76fadf05ef1958aaf8815478ccde", "status": "affected", "versionType": "git"}, {"version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "lessThan": "e3d325c0bdb7bc5d1b4cc8d8441d79794cd03729", "status": "affected", "versionType": "git"}, {"version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "lessThan": "18227a6bc98bd0ba96ed3ce9d5b28776a5a28dfc", "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/orangefs/dir.c"], "versions": [{"version": "4.12", "status": "affected"}, {"version": "0", "lessThan": "4.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "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": "4.12", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1679780f482feeb82acb5995587d4fb1d1fe82fd"}, {"url": "https://git.kernel.org/stable/c/a72bbb43689591c9d36e3bb45c2d4e688cf92682"}, {"url": "https://git.kernel.org/stable/c/36723b28e3293047f087f4501f1ef4ead418dd84"}, {"url": "https://git.kernel.org/stable/c/07c05601a9a8e5d4481b2a4a16dc0e3c5bc63ad9"}, {"url": "https://git.kernel.org/stable/c/fdf06a1b66ff39664b01c6bb6a2aa98d81e8ebe1"}, {"url": "https://git.kernel.org/stable/c/82fc886e244c76fadf05ef1958aaf8815478ccde"}, {"url": "https://git.kernel.org/stable/c/e3d325c0bdb7bc5d1b4cc8d8441d79794cd03729"}, {"url": "https://git.kernel.org/stable/c/18227a6bc98bd0ba96ed3ce9d5b28776a5a28dfc"}], "title": "orangefs: keep the readdir entry size 64-bit in fill_from_part()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/orangefs/dir.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "1679780f482feeb82acb5995587d4fb1d1fe82fd", "status": "affected", "version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "versionType": "git"}, {"lessThan": "a72bbb43689591c9d36e3bb45c2d4e688cf92682", "status": "affected", "version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "versionType": "git"}, {"lessThan": "36723b28e3293047f087f4501f1ef4ead418dd84", "status": "affected", "version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "versionType": "git"}, {"lessThan": "07c05601a9a8e5d4481b2a4a16dc0e3c5bc63ad9", "status": "affected", "version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "versionType": "git"}, {"lessThan": "fdf06a1b66ff39664b01c6bb6a2aa98d81e8ebe1", "status": "affected", "version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "versionType": "git"}, {"lessThan": "82fc886e244c76fadf05ef1958aaf8815478ccde", "status": "affected", "version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "versionType": "git"}, {"lessThan": "e3d325c0bdb7bc5d1b4cc8d8441d79794cd03729", "status": "affected", "version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "versionType": "git"}, {"lessThan": "18227a6bc98bd0ba96ed3ce9d5b28776a5a28dfc", "status": "affected", "version": "480e3e532e31666a18520a7964bb4095d7a16b9a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/orangefs/dir.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.12"}, {"lessThan": "4.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "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\norangefs: keep the readdir entry size 64-bit in fill_from_part()\n\nfill_from_part() computes the size of a directory entry in size_t but\nstores it in a __u32. An entry length near U32_MAX wraps it to a small\nvalue, bypasses the bounds check, and is then used to index the entry,\nreading far past the directory part -- an out-of-bounds read that oopses\nthe kernel.\n\nCompute the size as a u64 so it cannot truncate; the bounds check then\nrejects the entry. The trailer is supplied by the userspace client."}], "id": "CVE-2026-72033", "lastModified": "2026-08-17T06:18:01.060", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-15T06:21:12.247", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/07c05601a9a8e5d4481b2a4a16dc0e3c5bc63ad9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1679780f482feeb82acb5995587d4fb1d1fe82fd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18227a6bc98bd0ba96ed3ce9d5b28776a5a28dfc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36723b28e3293047f087f4501f1ef4ead418dd84"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/82fc886e244c76fadf05ef1958aaf8815478ccde"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a72bbb43689591c9d36e3bb45c2d4e688cf92682"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e3d325c0bdb7bc5d1b4cc8d8441d79794cd03729"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fdf06a1b66ff39664b01c6bb6a2aa98d81e8ebe1"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: orangefs: keep the readdir entry size 64-bit in fill_from_part()", "id": "2516626", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516626"}, "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-125", "details": ["A flaw was found in OrangeFS, a file system within the Linux kernel. An integer overflow occurs in the fill_from_part() function when calculating the size of a directory entry. This happens because the size is computed as a 64-bit value but stored as a 32-bit value, allowing a large entry length to wrap around. A local attacker or malicious userspace client can exploit this by providing a specially crafted directory entry, leading to an out-of-bounds read and a kernel crash."], "name": "CVE-2026-72033", "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72033\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72033\nhttps://lore.kernel.org/linux-cve-announce/2026081512-CVE-2026-72033-9998@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[480e3e532e31666a18520a7964bb4095d7a16b9a,1679780f482feeb82acb5995587d4fb1d1fe82fd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[480e3e532e31666a18520a7964bb4095d7a16b9a,a72bbb43689591c9d36e3bb45c2d4e688cf92682)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[480e3e532e31666a18520a7964bb4095d7a16b9a,36723b28e3293047f087f4501f1ef4ead418dd84)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[480e3e532e31666a18520a7964bb4095d7a16b9a,07c05601a9a8e5d4481b2a4a16dc0e3c5bc63ad9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[480e3e532e31666a18520a7964bb4095d7a16b9a,fdf06a1b66ff39664b01c6bb6a2aa98d81e8ebe1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[480e3e532e31666a18520a7964bb4095d7a16b9a,82fc886e244c76fadf05ef1958aaf8815478ccde)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[480e3e532e31666a18520a7964bb4095d7a16b9a,e3d325c0bdb7bc5d1b4cc8d8441d79794cd03729)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[480e3e532e31666a18520a7964bb4095d7a16b9a,18227a6bc98bd0ba96ed3ce9d5b28776a5a28dfc)"}}], "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": "generic", "value": "4.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc2,*]"}}], "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": "2026-08-15T09:30:04.648022+00:00", "updated": "2026-08-17T07:45:16.332454+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-125"]}