{"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"}}}}