{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68157", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.371Z", "datePublished": "2026-08-10T11:59:23.692Z", "dateUpdated": "2026-08-13T22:40:59.179Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-13T22:40:59.179Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: guard missing CRUSH type name lookup\n\nLocalized read selection can walk a parent bucket whose name exists in\nthe CRUSH map while its type has no matching entry in type_names.\nget_immediate_parent() then dereferences a NULL type_cn and passes an\ninvalid pointer into strcmp(), causing a null-ptr-deref.\n\nSkip such malformed parent buckets unless both the bucket name and type\nname metadata are present. This keeps malformed hierarchy data from\ncrashing locality lookup and safely falls back to \"not local\".\n\n[ idryomov: add WARN_ON_ONCE ]"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - Malformed CRUSH hierarchy data is delivered to the kernel Ceph client in CEPH_MSG_OSD_MAP over TCP from a monitor or OSD peer, stored in libceph, and later triggers get_immediate_parent() during localized-read target selection on RBD/CephFS client I/O.\nAC:L - A compromised or attacker-controlled Ceph monitor can publish an osdmap whose CRUSH buckets have names but missing type_names entries; once applied, the NULL dereference is reliably hit on subsequent localize-read calc_target() paths without further attacker-controlled timing.\nPR:N - Exploitation requires no privileges on the victim host; any machine acting as a kernel Ceph client that receives a forged osdmap from a cluster peer over the network can be attacked without local capabilities or user-namespace tricks.\nUI:N - No victim user action is needed at exploitation time beyond the host already being a Ceph client with localized reads enabled; forged osdmaps are applied automatically and the crash fires on subsequent kernel client read or map-rescan operations.\nS:U - Impact is confined to kernel memory on the Ceph client host (crash or potential escalation within that host); it does not cross VM, IOMMU, or sandbox boundaries to other security authorities.\nC:N - The failure is a NULL pointer dereference when accessing type_cn->cn_name; there is no out-of-bounds read, use-after-free, or other memory corruption that could disclose kernel data.\nI:N - The bug causes a NULL pointer dereference crash only; no attacker-controlled write, heap corruption, or control-flow hijack primitive is created by this defect.\nA:H - The NULL pointer dereference in get_immediate_parent() during CRUSH locality lookup causes a kernel oops or panic, denying all service on the affected Ceph client host."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ceph/osdmap.c"], "versions": [{"version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "lessThan": "c46d82c47afc968d6ee8ef4470fa2dd35b765c21", "status": "affected", "versionType": "git"}, {"version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "lessThan": "3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50", "status": "affected", "versionType": "git"}, {"version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "lessThan": "4716a64b7cc2797741f7be4e283ace78a9dff37d", "status": "affected", "versionType": "git"}, {"version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "lessThan": "db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d", "status": "affected", "versionType": "git"}, {"version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "lessThan": "bbeae12fda3384a90fbebc8a19ba9d33f85b5361", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ceph/osdmap.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc5", "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": "5.8", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.2-rc5"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c46d82c47afc968d6ee8ef4470fa2dd35b765c21"}, {"url": "https://git.kernel.org/stable/c/3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50"}, {"url": "https://git.kernel.org/stable/c/4716a64b7cc2797741f7be4e283ace78a9dff37d"}, {"url": "https://git.kernel.org/stable/c/db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d"}, {"url": "https://git.kernel.org/stable/c/bbeae12fda3384a90fbebc8a19ba9d33f85b5361"}], "title": "libceph: guard missing CRUSH type name lookup", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/ceph/osdmap.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c46d82c47afc968d6ee8ef4470fa2dd35b765c21", "status": "affected", "version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "versionType": "git"}, {"lessThan": "3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50", "status": "affected", "version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "versionType": "git"}, {"lessThan": "4716a64b7cc2797741f7be4e283ace78a9dff37d", "status": "affected", "version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "versionType": "git"}, {"lessThan": "db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d", "status": "affected", "version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "versionType": "git"}, {"lessThan": "bbeae12fda3384a90fbebc8a19ba9d33f85b5361", "status": "affected", "version": "117d96a04f007ce8fc2e292369056c3bd09f6f63", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/ceph/osdmap.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"lessThan": "5.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc5", "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\nlibceph: guard missing CRUSH type name lookup\n\nLocalized read selection can walk a parent bucket whose name exists in\nthe CRUSH map while its type has no matching entry in type_names.\nget_immediate_parent() then dereferences a NULL type_cn and passes an\ninvalid pointer into strcmp(), causing a null-ptr-deref.\n\nSkip such malformed parent buckets unless both the bucket name and type\nname metadata are present. This keeps malformed hierarchy data from\ncrashing locality lookup and safely falls back to \"not local\".\n\n[ idryomov: add WARN_ON_ONCE ]"}], "id": "CVE-2026-68157", "lastModified": "2026-08-13T23:17:21.240", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-10T13:20:01.910", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4716a64b7cc2797741f7be4e283ace78a9dff37d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bbeae12fda3384a90fbebc8a19ba9d33f85b5361"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c46d82c47afc968d6ee8ef4470fa2dd35b765c21"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: libceph null pointer dereference leads to denial of service", "id": "2513212", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513212"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nlibceph: guard missing CRUSH type name lookup\nLocalized read selection can walk a parent bucket whose name exists in\nthe CRUSH map while its type has no matching entry in type_names.\nget_immediate_parent() then dereferences a NULL type_cn and passes an\ninvalid pointer into strcmp(), causing a null-ptr-deref.\nSkip such malformed parent buckets unless both the bucket name and type\nname metadata are present. This keeps malformed hierarchy data from\ncrashing locality lookup and safely falls back to \"not local\".\n[ idryomov: add WARN_ON_ONCE ]", "A flaw was found in libceph, a component of the Linux kernel. When processing a malformed CRUSH map, if a parent bucket's name exists but its type is missing, a null pointer dereference can occur. This issue can lead to a system crash, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-68157", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not 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"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T11:59:23Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68157\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68157\nhttps://git.kernel.org/stable/c/3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50\nhttps://git.kernel.org/stable/c/4716a64b7cc2797741f7be4e283ace78a9dff37d\nhttps://git.kernel.org/stable/c/bbeae12fda3384a90fbebc8a19ba9d33f85b5361\nhttps://git.kernel.org/stable/c/c46d82c47afc968d6ee8ef4470fa2dd35b765c21\nhttps://git.kernel.org/stable/c/db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[117d96a04f007ce8fc2e292369056c3bd09f6f63,c46d82c47afc968d6ee8ef4470fa2dd35b765c21)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[117d96a04f007ce8fc2e292369056c3bd09f6f63,3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[117d96a04f007ce8fc2e292369056c3bd09f6f63,4716a64b7cc2797741f7be4e283ace78a9dff37d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[117d96a04f007ce8fc2e292369056c3bd09f6f63,db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[117d96a04f007ce8fc2e292369056c3bd09f6f63,bbeae12fda3384a90fbebc8a19ba9d33f85b5361)"}}], "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": "5.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*]"}}], "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": "2026-08-10T16:00:03.838286+00:00", "updated": "2026-08-14T00:00:04.144974+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}