{"apiVersion":"1.0","identifier":"CVE-2026-74404","description":"In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one Sashiko notes: > regarding the bounds check in snp_filter_reserved_mem_regions() > called via walk_iomem_res_desc(): does the check > if ((range_list->num_elements * 16 + 8) > PAGE_SIZE) > allow an off-by-one heap buffer overflow? > > If range_list->num_elements is 255, 255 * 16 + 8 = 4088, which is <= 4096. > Writing range->base (8 bytes) fills 4088-4095, but writing range->page_count > (4 bytes) would write to 4096-4099, overflowing the kzalloc-allocated > PAGE_SIZE buffer. Fix this by accounting for the entry about to be written to, in addition to the entries that are already allocated.","publishedAt":"2026-08-15T06:22:42","lastModifiedAt":"2026-08-17T06:19:35","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74404","cvssScore":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00142,"riskScore":0.79,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74404","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74404","en":"https://www.redsauce.net/en/cves/CVE-2026-74404","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74404","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74404","de":"https://www.redsauce.net/de/cves/CVE-2026-74404","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74404","el":"https://www.redsauce.net/el/cves/CVE-2026-74404"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74404"}}