{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-68284", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-16T14:48:05.292Z", "datePublished": "2025-12-16T15:06:06.235Z", "dateUpdated": "2026-08-05T12:10:38.038Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:10:38.038Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: prevent potential out-of-bounds writes in handle_auth_session_key()\n\nThe len field originates from untrusted network packets. Boundary\nchecks have been added to prevent potential out-of-bounds writes when\ndecrypting the connection secret or processing service tickets.\n\n[ idryomov: changelog ]" } ], "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 - A malicious or compromised Ceph monitor can deliver the crafted authentication reply remotely over TCP through either messenger v1 or v2.\nAC:L - The attacker controls the forged lengths and block alignment, and the in-place AES-CBC operation writes beyond the receive buffer before validating padding or magic.\nPR:N - The attacker requires no privileges or account on the affected client; a malicious configured monitor can trigger the flaw during the automatic CephX exchange.\nUI:N - An already configured CephFS or RBD client authenticates and reconnects automatically, requiring no contemporaneous user action.\nS:U - Exploitation compromises the kernel within the same host security authority and does not inherently cross a VM, IOMMU, or other scope boundary.\nC:H - The out-of-bounds kernel-memory corruption can support control-flow hijacking and arbitrary kernel-memory disclosure.\nI:H - The forged span causes an out-of-bounds in-place write into unrelated kernel memory, potentially enabling arbitrary modification and kernel code execution.\nA:H - The corruption can reliably cause a kernel oops or panic and can be retriggered by the malicious network peer." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/ceph/auth_x.c" ], "versions": [ { "version": "285ea34fc876aa0a2c5e65d310c4a41269e2e5f2", "lessThan": "f22c55a20a2d9ffbbac57408d5d488cef8201e9d", "status": "affected", "versionType": "git" }, { "version": "285ea34fc876aa0a2c5e65d310c4a41269e2e5f2", "lessThan": "8dfcc56af28cffb8f25fb9be37b3acc61f2a3d09", "status": "affected", "versionType": "git" }, { "version": "285ea34fc876aa0a2c5e65d310c4a41269e2e5f2", "lessThan": "ccbccfba25e9aa395daaea156b5e7790910054c4", "status": "affected", "versionType": "git" }, { "version": "285ea34fc876aa0a2c5e65d310c4a41269e2e5f2", "lessThan": "5ef575834ca99f719d7573cdece9df2fe2b72424", "status": "affected", "versionType": "git" }, { "version": "285ea34fc876aa0a2c5e65d310c4a41269e2e5f2", "lessThan": "6920ff09bf911bc919cd7a6b7176fbdd1a6e6850", "status": "affected", "versionType": "git" }, { "version": "285ea34fc876aa0a2c5e65d310c4a41269e2e5f2", "lessThan": "7fce830ecd0a0256590ee37eb65a39cbad3d64fc", "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/auth_x.c" ], "versions": [ { "version": "5.11", "status": "affected" }, { "version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.197", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.159", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.119", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.61", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17.11", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18", "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": "5.11", "versionEndExcluding": "5.15.197" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.1.159" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.6.119" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.12.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.17.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.18" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f22c55a20a2d9ffbbac57408d5d488cef8201e9d" }, { "url": "https://git.kernel.org/stable/c/8dfcc56af28cffb8f25fb9be37b3acc61f2a3d09" }, { "url": "https://git.kernel.org/stable/c/ccbccfba25e9aa395daaea156b5e7790910054c4" }, { "url": "https://git.kernel.org/stable/c/5ef575834ca99f719d7573cdece9df2fe2b72424" }, { "url": "https://git.kernel.org/stable/c/6920ff09bf911bc919cd7a6b7176fbdd1a6e6850" }, { "url": "https://git.kernel.org/stable/c/7fce830ecd0a0256590ee37eb65a39cbad3d64fc" } ], "title": "libceph: prevent potential out-of-bounds writes in handle_auth_session_key()", "x_generator": { "engine": "bippy-1.2.0" } } } }