{"id":"CVE-2025-68811","state":"PUBLISHED","title":"svcrdma: use rc_pageoff for memcpy byte offset","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: use rc_pageoff for memcpy byte offset\n\nsvc_rdma_copy_inline_range added rc_curpage (page index) to the page\nbase instead of the byte offset rc_pageoff. Use rc_pageoff so copies\nland within the current page.\n\nFound by ZeroPath (https://zeropath.com)","publishedAt":"2026-01-13T15:29:17.128Z","updatedAt":"2026-10-19T18:05:08.265Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8e122582680c6f8acd686a5a2af9c0e46fe90f2d","status":"affected","lessThan":"e8623e9c451e23d84b870811f42fd872b4089ef6","versionType":"git"},{"version":"8e122582680c6f8acd686a5a2af9c0e46fe90f2d","status":"affected","lessThan":"2a77c8dd49bccf0ca232be7c836cec1209abb8da","versionType":"git"},{"version":"8e122582680c6f8acd686a5a2af9c0e46fe90f2d","status":"affected","lessThan":"a8ee9099f30654917aa68f55d707b5627e1dbf77","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/xprtrdma/svc_rdma_rw.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.3","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/xprtrdma/svc_rdma_rw.c"]}],"references":["https://git.kernel.org/stable/c/e8623e9c451e23d84b870811f42fd872b4089ef6","https://git.kernel.org/stable/c/2a77c8dd49bccf0ca232be7c836cec1209abb8da","https://git.kernel.org/stable/c/a8ee9099f30654917aa68f55d707b5627e1dbf77"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68811.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68811","state":"PUBLISHED","datePublished":"2026-01-13T15:29:17.128Z","dateUpdated":"2026-10-19T18:05:08.265Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T10:30:51.047Z"},"containers":{"cna":{"title":"svcrdma: use rc_pageoff for memcpy byte offset","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: use rc_pageoff for memcpy byte offset\n\nsvc_rdma_copy_inline_range added rc_curpage (page index) to the page\nbase instead of the byte offset rc_pageoff. Use rc_pageoff so copies\nland within the current page.\n\nFound by ZeroPath (https://zeropath.com)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8e122582680c6f8acd686a5a2af9c0e46fe90f2d","status":"affected","lessThan":"e8623e9c451e23d84b870811f42fd872b4089ef6","versionType":"git"},{"version":"8e122582680c6f8acd686a5a2af9c0e46fe90f2d","status":"affected","lessThan":"2a77c8dd49bccf0ca232be7c836cec1209abb8da","versionType":"git"},{"version":"8e122582680c6f8acd686a5a2af9c0e46fe90f2d","status":"affected","lessThan":"a8ee9099f30654917aa68f55d707b5627e1dbf77","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/xprtrdma/svc_rdma_rw.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.3","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/xprtrdma/svc_rdma_rw.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e8623e9c451e23d84b870811f42fd872b4089ef6"},{"url":"https://git.kernel.org/stable/c/2a77c8dd49bccf0ca232be7c836cec1209abb8da"},{"url":"https://git.kernel.org/stable/c/a8ee9099f30654917aa68f55d707b5627e1dbf77"}],"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 - An unauthenticated client can reach the vulnerable RPC-over-RDMA receive path through a network-exposed NFS/RDMA service, including routable iWARP or RoCE deployments.\nAC:L - The attacker directly controls the chunk positions, inline length, and copied bytes; a single crafted request in a supported multi-page inline configuration deterministically reaches the faulty memcpy without a race.\nPR:N - RDMA connections and request reconstruction occur before SUNRPC credential decoding, NFS authentication, or export authorization.\nUI:N - Exploitation requires only sending the crafted RPC-over-RDMA request to a configured server, with no victim action.\nS:U - The vulnerable code and affected kernel resources remain within the host kernel's security authority.\nC:H - The controlled cross-page kernel corruption can be developed into code-execution or memory-read primitives, permitting disclosure of arbitrary kernel memory.\nI:H - Using a page index as a byte offset lets attacker-controlled data overwrite assembled request contents and cross page boundaries, enabling kernel memory corruption and potential code execution.\nA:H - Corruption of adjacent kernel pages can cause an oops or panic, and an unauthenticated attacker can repeatedly trigger the receive path."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:11:42.662Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.12.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2025-68811","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-06-16T16:28:47.245013Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","lang":"en","type":"CWE","description":"CWE-787 Out-of-bounds Write"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-19T18:05:08.265Z"}}]}}}