{"cve":"CVE-2026-74452","nvd":{"published":"2026-08-15T13:17:49.790","modified":"2026-08-17T06:19:41.070","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: reject firmware sections with oversized data\n\nIn panthor_fw_load_section_entry(), the data size to copy is calculated\nwithout validating it against the allocated section_size:\n\n    section->data.size = hdr.data.end - hdr.data.start;\n\nIf a crafted firmware sets data.size larger than the allocated memory,\nthis could cause a heap buffer overflow in panthor_fw_init_section_mem()\n\n    memcpy(section->mem->kmap, section->data.buf, section->data.size);\n\nAdditionally, if the section->data.size exceeds the BO size, could this\nmemset underflow the size calculation, leading to a massive out-of-bounds\nzeroing of kernel memory?\n\n    memset(section->mem->kmap + section->data.size, 0,\n           panthor_kernel_bo_size(section->mem) - section->data.size);\n\nReject section entries whose initial data is larger than the section size.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/0e57165ca025a67d8dfd17efd2765fdd4925fdab","https://git.kernel.org/stable/c/2a761b9be5863e1d26a584f0c2d1e114a684ed9a","https://git.kernel.org/stable/c/7f4674d986c15c74327cb6ac6e2e2afecf061e04","https://git.kernel.org/stable/c/a3caaa06809248b996254be5b47e10804a3494e2"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:10.689564601+00:00"},"epss":{"cve":"CVE-2026-74452","score":0.00189,"percentile":0.08601,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}