{"apiVersion":"1.0","identifier":"CVE-2026-74354","description":"In the Linux kernel, the following vulnerability has been resolved: bpf: Take mmap_lock in zap_pages() zap_vma_range() requires the owning mm-s mmap_lock to be held. Taking mmap_read_lock under arena->lock would AB-BA against arena_vm_close() and arena_map_mmap(), both of which run with mmap_write_lock held and then acquire arena->lock. Instead drop arena->lock, mmget_not_zero() the vma-s mm, take mmap_read_lock, and re-resolve the vma via find_vma() since it may have been unmapped or replaced while waiting. Track processed vmls with a per-call generation in vml->zap_gen and serialize zap_pages() callers with a new arena->zap_mutex so concurrent callers on different uaddr ranges do not mark each other-s vmls processed before the zap is done.","publishedAt":"2026-08-15T06:22:36","lastModifiedAt":"2026-08-17T06:19:30","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74354","cvssScore":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.0012,"riskScore":0.79,"affectedProduct":"linux","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74354","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74354","en":"https://www.redsauce.net/en/cves/CVE-2026-74354","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74354","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74354","de":"https://www.redsauce.net/de/cves/CVE-2026-74354","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74354","el":"https://www.redsauce.net/el/cves/CVE-2026-74354"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74354"}}