{"id":"CVE-2026-89592","revision":"8d7c40e0c48b4b74abe2fb91ef501d6d","records":[{"revision":"8d7c40e0c48b4b74abe2fb91ef501d6d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89592","aliases":[],"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":0,"publishedAt":"2026-09-11T19:44:55.813+00:00","modifiedAt":"2026-10-19T08:49:24.772+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/accel/rocket/rocket_job.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0810d5ad88a18f1e6d549853a388ad0316f74e36\",\n                            \"lessThan\": \"c1a5bf1b6e1d5944183dcef3844a18c17219af4d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0810d5ad88a18f1e6d549853a388ad0316f74e36\",\n                            \"lessThan\": \"dfff90a6eb2258e3b867994ae17af4a7ba3504d2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0810d5ad88a18f1e6d549853a388ad0316f74e36\",\n                            \"lessThan\": \"a85402bff218f2b8f0d806e46c16c2f3d49cdda7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/accel/rocket/rocket_job.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/c1a5bf1b6e1d5944183dcef3844a18c17219af4d","https://git.kernel.org/stable/c/dfff90a6eb2258e3b867994ae17af4a7ba3504d2","https://git.kernel.org/stable/c/a85402bff218f2b8f0d806e46c16c2f3d49cdda7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89592","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89592","identifiers":["CVE-2026-89592"]},"retained":false,"historicalAffected":[]}],"coverage":[]}