{"api_version":"1","generated_at":"2026-10-01T06:31:15+00:00","cve":"CVE-2026-89592","urls":{"html":"https://cve.report/CVE-2026-89592","api":"https://cve.report/api/cve/CVE-2026-89592.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89592","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89592"},"summary":{"title":"accel/rocket: fix NULL dereference and integer overflow in rocket_job_push()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/rocket: fix NULL dereference and integer overflow in rocket_job_push()\n\nrocket_job_push() allocates a temporary array to hold all input and\noutput GEM object pointers:\n\n    bos = kvmalloc_array(job->in_bo_count + job->out_bo_count,\n                         sizeof(void *), GFP_KERNEL);\n    memcpy(bos, job->in_bos, job->in_bo_count * sizeof(void *));\n    memcpy(&bos[job->in_bo_count], job->out_bos, ...);\n\nTwo bugs exist:\n\n1. Missing NULL check: if kvmalloc_array() fails, bos is NULL and\n   the subsequent memcpy() dereferences it, causing a kernel NULL\n   pointer dereference.\n\n2. Integer overflow: in_bo_count and out_bo_count are both u32, set\n   directly from userspace-supplied in_bo_handle_count and\n   out_bo_handle_count with no prior validation. Their sum is computed\n   in u32 arithmetic and can wrap to a smaller value, causing the\n   allocation count passed to kvmalloc_array() to be smaller than\n   intended. Subsequent uses still operate on the original counts when\n   copying and locking objects, which may lead to out-of-bounds accesses\n   on the temporary array.\n\nFix by using check_add_overflow() to detect count overflow before the\nallocation, and adding a NULL check on the allocation result.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:43","updated_at":"2026-09-11 20:19:43"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/dfff90a6eb2258e3b867994ae17af4a7ba3504d2","name":"https://git.kernel.org/stable/c/dfff90a6eb2258e3b867994ae17af4a7ba3504d2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c1a5bf1b6e1d5944183dcef3844a18c17219af4d","name":"https://git.kernel.org/stable/c/c1a5bf1b6e1d5944183dcef3844a18c17219af4d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a85402bff218f2b8f0d806e46c16c2f3d49cdda7","name":"https://git.kernel.org/stable/c/a85402bff218f2b8f0d806e46c16c2f3d49cdda7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89592","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89592","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0810d5ad88a18f1e6d549853a388ad0316f74e36 c1a5bf1b6e1d5944183dcef3844a18c17219af4d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0810d5ad88a18f1e6d549853a388ad0316f74e36 dfff90a6eb2258e3b867994ae17af4a7ba3504d2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0810d5ad88a18f1e6d549853a388ad0316f74e36 a85402bff218f2b8f0d806e46c16c2f3d49cdda7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 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":"89592","cve":"CVE-2026-89592","epss":"0.002060000","percentile":"0.108650000","score_date":"2026-09-14","updated_at":"2026-09-15 00:00:43"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/accel/rocket/rocket_job.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c1a5bf1b6e1d5944183dcef3844a18c17219af4d","status":"affected","version":"0810d5ad88a18f1e6d549853a388ad0316f74e36","versionType":"git"},{"lessThan":"dfff90a6eb2258e3b867994ae17af4a7ba3504d2","status":"affected","version":"0810d5ad88a18f1e6d549853a388ad0316f74e36","versionType":"git"},{"lessThan":"a85402bff218f2b8f0d806e46c16c2f3d49cdda7","status":"affected","version":"0810d5ad88a18f1e6d549853a388ad0316f74e36","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/accel/rocket/rocket_job.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","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":"6.18.50","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/rocket: fix NULL dereference and integer overflow in rocket_job_push()\n\nrocket_job_push() allocates a temporary array to hold all input and\noutput GEM object pointers:\n\n    bos = kvmalloc_array(job->in_bo_count + job->out_bo_count,\n                         sizeof(void *), GFP_KERNEL);\n    memcpy(bos, job->in_bos, job->in_bo_count * sizeof(void *));\n    memcpy(&bos[job->in_bo_count], job->out_bos, ...);\n\nTwo bugs exist:\n\n1. Missing NULL check: if kvmalloc_array() fails, bos is NULL and\n   the subsequent memcpy() dereferences it, causing a kernel NULL\n   pointer dereference.\n\n2. Integer overflow: in_bo_count and out_bo_count are both u32, set\n   directly from userspace-supplied in_bo_handle_count and\n   out_bo_handle_count with no prior validation. Their sum is computed\n   in u32 arithmetic and can wrap to a smaller value, causing the\n   allocation count passed to kvmalloc_array() to be smaller than\n   intended. Subsequent uses still operate on the original counts when\n   copying and locking objects, which may lead to out-of-bounds accesses\n   on the temporary array.\n\nFix by using check_add_overflow() to detect count overflow before the\nallocation, and adding a NULL check on the allocation result."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:44:55.813Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c1a5bf1b6e1d5944183dcef3844a18c17219af4d"},{"url":"https://git.kernel.org/stable/c/dfff90a6eb2258e3b867994ae17af4a7ba3504d2"},{"url":"https://git.kernel.org/stable/c/a85402bff218f2b8f0d806e46c16c2f3d49cdda7"}],"title":"accel/rocket: fix NULL dereference and integer overflow in rocket_job_push()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89592","datePublished":"2026-09-11T19:44:55.813Z","dateReserved":"2026-09-11T19:38:34.730Z","dateUpdated":"2026-09-11T19:44:55.813Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:43","lastModifiedDate":"2026-09-11 20:19:43","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89592","Ordinal":"1","Title":"accel/rocket: fix NULL dereference and integer overflow in rocke","CVE":"CVE-2026-89592","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89592","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/rocket: fix NULL dereference and integer overflow in rocket_job_push()\n\nrocket_job_push() allocates a temporary array to hold all input and\noutput GEM object pointers:\n\n    bos = kvmalloc_array(job->in_bo_count + job->out_bo_count,\n                         sizeof(void *), GFP_KERNEL);\n    memcpy(bos, job->in_bos, job->in_bo_count * sizeof(void *));\n    memcpy(&bos[job->in_bo_count], job->out_bos, ...);\n\nTwo bugs exist:\n\n1. Missing NULL check: if kvmalloc_array() fails, bos is NULL and\n   the subsequent memcpy() dereferences it, causing a kernel NULL\n   pointer dereference.\n\n2. Integer overflow: in_bo_count and out_bo_count are both u32, set\n   directly from userspace-supplied in_bo_handle_count and\n   out_bo_handle_count with no prior validation. Their sum is computed\n   in u32 arithmetic and can wrap to a smaller value, causing the\n   allocation count passed to kvmalloc_array() to be smaller than\n   intended. Subsequent uses still operate on the original counts when\n   copying and locking objects, which may lead to out-of-bounds accesses\n   on the temporary array.\n\nFix by using check_add_overflow() to detect count overflow before the\nallocation, and adding a NULL check on the allocation result.","Type":"Description","Title":"accel/rocket: fix NULL dereference and integer overflow in rocke"}]}}}