{"api_version":"1","generated_at":"2026-09-13T06:11:19+00:00","cve":"CVE-2026-89528","urls":{"html":"https://cve.report/CVE-2026-89528","api":"https://cve.report/api/cve/CVE-2026-89528.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89528","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89528"},"summary":{"title":"svcrdma: Reject Read lists that exceed the page budget","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Reject Read lists that exceed the page budget\n\nIndividual Read segment lengths are validated at decode time, but\nnothing prevents a requester from sending multiple segments whose\ncumulative length exceeds the rq_pages array budget. When one\nsegment fills the page array exactly, the runtime guard in\nsvc_rdma_build_read_segment() is bypassed because len reaches zero.\nA subsequent segment then accesses the NULL sentinel slot at\nrq_pages[rq_maxpages], resulting in a NULL pointer dereference during\nDMA mapping.\n\nAccumulate pages across all Read segments and reject the message at\ndecode time when the total would overflow the page budget.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:35","updated_at":"2026-09-11 20:19:35"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/0ca487abb3bdf581851664b5db21f364caf57682","name":"https://git.kernel.org/stable/c/0ca487abb3bdf581851664b5db21f364caf57682","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1a3af2262cb384112ef38632de4690682be528b4","name":"https://git.kernel.org/stable/c/1a3af2262cb384112ef38632de4690682be528b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/465f511f59a0fa7a80d5d1073c4b24f28ea38f58","name":"https://git.kernel.org/stable/c/465f511f59a0fa7a80d5d1073c4b24f28ea38f58","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89528","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89528","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 026d958b38c628a1b4ced534808945365e2747a5 1a3af2262cb384112ef38632de4690682be528b4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 026d958b38c628a1b4ced534808945365e2747a5 465f511f59a0fa7a80d5d1073c4b24f28ea38f58 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 026d958b38c628a1b4ced534808945365e2747a5 0ca487abb3bdf581851664b5db21f364caf57682 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.51 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"89528","cve":"CVE-2026-89528","epss":"0.002100000","percentile":"0.113050000","score_date":"2026-09-12","updated_at":"2026-09-13 00:08:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sunrpc/xprtrdma/svc_rdma_recvfrom.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1a3af2262cb384112ef38632de4690682be528b4","status":"affected","version":"026d958b38c628a1b4ced534808945365e2747a5","versionType":"git"},{"lessThan":"465f511f59a0fa7a80d5d1073c4b24f28ea38f58","status":"affected","version":"026d958b38c628a1b4ced534808945365e2747a5","versionType":"git"},{"lessThan":"0ca487abb3bdf581851664b5db21f364caf57682","status":"affected","version":"026d958b38c628a1b4ced534808945365e2747a5","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/sunrpc/xprtrdma/svc_rdma_recvfrom.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.13"},{"lessThan":"4.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.51","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.51","versionStartIncluding":"4.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"4.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"4.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Reject Read lists that exceed the page budget\n\nIndividual Read segment lengths are validated at decode time, but\nnothing prevents a requester from sending multiple segments whose\ncumulative length exceeds the rq_pages array budget. When one\nsegment fills the page array exactly, the runtime guard in\nsvc_rdma_build_read_segment() is bypassed because len reaches zero.\nA subsequent segment then accesses the NULL sentinel slot at\nrq_pages[rq_maxpages], resulting in a NULL pointer dereference during\nDMA mapping.\n\nAccumulate pages across all Read segments and reject the message at\ndecode time when the total would overflow the page budget."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:44:08.514Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1a3af2262cb384112ef38632de4690682be528b4"},{"url":"https://git.kernel.org/stable/c/465f511f59a0fa7a80d5d1073c4b24f28ea38f58"},{"url":"https://git.kernel.org/stable/c/0ca487abb3bdf581851664b5db21f364caf57682"}],"title":"svcrdma: Reject Read lists that exceed the page budget","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89528","datePublished":"2026-09-11T19:44:08.514Z","dateReserved":"2026-09-11T19:38:34.719Z","dateUpdated":"2026-09-11T19:44:08.514Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:35","lastModifiedDate":"2026-09-11 20:19:35","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89528","Ordinal":"1","Title":"svcrdma: Reject Read lists that exceed the page budget","CVE":"CVE-2026-89528","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89528","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Reject Read lists that exceed the page budget\n\nIndividual Read segment lengths are validated at decode time, but\nnothing prevents a requester from sending multiple segments whose\ncumulative length exceeds the rq_pages array budget. When one\nsegment fills the page array exactly, the runtime guard in\nsvc_rdma_build_read_segment() is bypassed because len reaches zero.\nA subsequent segment then accesses the NULL sentinel slot at\nrq_pages[rq_maxpages], resulting in a NULL pointer dereference during\nDMA mapping.\n\nAccumulate pages across all Read segments and reject the message at\ndecode time when the total would overflow the page budget.","Type":"Description","Title":"svcrdma: Reject Read lists that exceed the page budget"}]}}}