CVE-2026-43273

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cephfs data=a'\nmount -t ceph fs_a@.a=/ /mnt/mycephfs/ -o conf=./ceph.conf\ndd if=/dev/urandom of=/mnt/mycephfs/foo bs=64K count=1\nmkdir /mnt/mycephfs/.snap/snap1\nmd5sum /mnt/mycephfs/.snap/snap1/foo\nfallocate -p -o 0 -l 4096 /mnt/mycephfs/foo\necho 3 > /proc/sys/vm/drop/caches\nmd5sum /mnt/mycephfs/.snap/snap1/foo # get different md5sum!!"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ceph/file.c"], "versions": [{"version": "ad7a60de882aca31afb58721db166f7e77afcd92", "lessThan": "36673344b41c31fb502dd0d0113cec1aa96f581e", "status": "affected", "versionType": "git"}, {"version": "ad7a60de882aca31afb58721db166f7e77afcd92", "lessThan": "5788b742007f53406049bef917833a71ddd43f60", "status": "affected", "versionType": "git"}, {"version": "ad7a60de882aca31afb58721db166f7e77afcd92", "lessThan": "757873abfc8ea38592582180aed0f57f0f0cb07a", "status": 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get different md5sum!!"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.252", "versionStartIncluding": "3.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.202", "versionStartIncluding": "3.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.165", "versionStartIncluding": "3.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.128", "versionStartIncluding": "3.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.75", "versionStartIncluding": "3.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.16", "versionStartIncluding": "3.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19.6", "versionStartIncluding": "3.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0", "versionStartIncluding": "3.12"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:21:22.184Z"}}}, "cveMetadata": {"cveId": "CVE-2026-43273", "state": "PUBLISHED", "dateUpdated": "2026-11-06T15:42:46.088Z", "dateReserved": "2026-05-01T14:12:55.998Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-05-06T11:28:56.851Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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/mnt/mycephfs/.snap/snap1/foo\nfallocate -p -o 0 -l 4096 /mnt/mycephfs/foo\necho 3 > /proc/sys/vm/drop/caches\nmd5sum /mnt/mycephfs/.snap/snap1/foo # get different md5sum!!"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nceph: proporcionar contexto de instant\u00e1nea en ceph_zero_partial_object()\n\nLa funci\u00f3n ceph_zero_partial_object carec\u00eda del contexto de instant\u00e1nea adecuado para sus operaciones de escritura OSD, lo que podr\u00eda llevar a inconsistencias de datos en las instant\u00e1neas.\n\nReproductor:\n.. / src/vstart.sh - -new -x - -localhost - -bluestore\n./bin/ceph auth caps client.fs_a mds \u2019allow rwps fsname=a\u2019 mon \u2019allow r fsname=a\u2019 osd \u2019allow rw tag cephfs data=a\u2019\nmount -t ceph fs_a@.a=/ /mnt/mycephfs/ -o conf=./ceph[.] conf\ndd if=/dev/urandom of=/mnt/mycephfs/foo bs=64K count=1\nmkdir /mnt/mycephfs/.snap/snap1\nmd5sum /mnt/mycephfs/.snap/snap1/foo\nfallocate -p -o 0 -l 4096 /mnt/mycephfs/foo\necho 3 > /proc/sys/vm/drop/caches\nmd5sum /mnt/mycephfs/.snap/snap1/foo # get different md5sum!!"}], "id": "CVE-2026-43273", "lastModified": "2026-11-11T23:10:00.263", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43273", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:32:59.434530Z", "version": "2.0.3"}}]}, "published": "2026-05-06T12:16:48.543", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36673344b41c31fb502dd0d0113cec1aa96f581e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4097e70fc543cca72982854108a32f6ae924e727"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/531a76c5a2e44264cee8a70121e63eb28c1ba728"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5788b742007f53406049bef917833a71ddd43f60"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/69e59a87bab0ea31ab2a584fc65e12dafacf8953"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/757873abfc8ea38592582180aed0f57f0f0cb07a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9efa154609cdb658f51c7d76b30a09f7e6485250"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f16bd3fa74a2084ee7e16a8a2be7e7399b970907"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ceph: supply snapshot context in ceph_zero_partial_object()", "id": "2467182", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467182"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-372", "details": ["A flaw was found in the Linux kernel's Ceph file system module. The `ceph_zero_partial_object` function, responsible for handling object write operations, was missing proper snapshot context. This oversight could allow a local attacker to cause data inconsistencies within snapshots, leading to a loss of data integrity for previously snapshotted data."], "name": "CVE-2026-43273", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43273\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43273\nhttps://lore.kernel.org/linux-cve-announce/2026050611-CVE-2026-43273-818a@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7a60de882aca31afb58721db166f7e77afcd92,36673344b41c31fb502dd0d0113cec1aa96f581e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7a60de882aca31afb58721db166f7e77afcd92,5788b742007f53406049bef917833a71ddd43f60)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7a60de882aca31afb58721db166f7e77afcd92,757873abfc8ea38592582180aed0f57f0f0cb07a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7a60de882aca31afb58721db166f7e77afcd92,9efa154609cdb658f51c7d76b30a09f7e6485250)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7a60de882aca31afb58721db166f7e77afcd92,531a76c5a2e44264cee8a70121e63eb28c1ba728)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7a60de882aca31afb58721db166f7e77afcd92,69e59a87bab0ea31ab2a584fc65e12dafacf8953)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7a60de882aca31afb58721db166f7e77afcd92,4097e70fc543cca72982854108a32f6ae924e727)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7a60de882aca31afb58721db166f7e77afcd92,f16bd3fa74a2084ee7e16a8a2be7e7399b970907)"}}], "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": "3.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.252,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.202,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.165,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.128,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.16,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.6,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-05-06T15:15:09.164737+00:00", "updated": "2026-05-08T21:45:18.999652+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}