{"apiVersion":"1.0","identifier":"CVE-2026-80702","description":"In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: fix guest_memory_dirty bitfield clobbered as size Two sites in vmwgfx_resource.c assign boolean literals to res->guest_memory_size, which is an unsigned long allocation-size field; the intended target is the adjacent res->guest_memory_dirty bitfield. After the assignments the field holds 0 or 1 instead of the resource-s MOB allocation size: - vmw_resource_release() writes 0 (false), and - vmw_resource_unbind_list() writes 1 (true). Subsequent revalidation paths read guest_memory_size when computing the dirty page range (vmw_bo_dirty_transfer_to_res()) and the buffer allocation size (vmw_resource_buf_alloc()), producing zero-length walks or wrap-around ranges that read or write past the MOB bitmap. The dirty-tracking intent of the original code (mark the resource as dirtied since the last sync) is also lost, since guest_memory_dirty is never updated. Rename both assignments to guest_memory_dirty.","publishedAt":"2026-08-28T08:16:55","lastModifiedAt":"2026-08-28T08:16:55","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80702","cvssScore":null,"cvssVector":"Pending","epssProbability":0.00168,"riskScore":0,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-80702","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-80702","en":"https://www.redsauce.net/en/cves/CVE-2026-80702","fr":"https://www.redsauce.net/fr/cves/CVE-2026-80702","pt":"https://www.redsauce.net/pt/cves/CVE-2026-80702","de":"https://www.redsauce.net/de/cves/CVE-2026-80702","sk":"https://www.redsauce.net/sk/cves/CVE-2026-80702","el":"https://www.redsauce.net/el/cves/CVE-2026-80702"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-80702"}}