{"apiVersion":"1.0","identifier":"CVE-2026-74590","description":"In the Linux kernel, the following vulnerability has been resolved: fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions The BPF verifier and the dynptr abstraction ensure that the memory space referenced by a dynptr remains valid. They do not, however, provide any guarantee that the contents of the memory are stable. kfuncs are expected to remain memory-safe even if concurrent modifications occur. bpf_get_fsverity_digest() didn-t follow that: it could crash if arg->digest_size was concurrently modified. Fix that by using the known-good value hash_alg->digest_size instead. Also widen -dynptr_sz- and -out_digest_sz- to u64 to match the return type of __bpf_dynptr_size(). It doesn-t appear that it can actually be more than INT_MAX currently (since __bpf_dynptr_data_rw() excludes file-based pointers), but the correct type might as well be used.","publishedAt":"2026-08-22T16:16:31","lastModifiedAt":"2026-08-25T06:18:34","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74590","cvssScore":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00129,"riskScore":0.79,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74590","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74590","en":"https://www.redsauce.net/en/cves/CVE-2026-74590","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74590","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74590","de":"https://www.redsauce.net/de/cves/CVE-2026-74590","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74590","el":"https://www.redsauce.net/el/cves/CVE-2026-74590"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74590"}}