{"id":"CVE-2024-42075","summary":"bpf: Fix remap of arena.","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix remap of arena.\n\nThe bpf arena logic didn't account for mremap operation. Add a refcnt for\nmultiple mmap events to prevent use-after-free in arena_vm_close.","modified":"2026-08-12T03:51:11.880456522Z","published":"2024-07-29T15:52:38.154Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42075.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/87496a1b01e8e2e399428c0db25e106f7961d01e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b90d77e5fd784ada62ddd714d15ee2400c28e1cf"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42075.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42075"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"317460317a02a1af512697e6e964298dedd8a163"},{"fixed":"87496a1b01e8e2e399428c0db25e106f7961d01e"},{"fixed":"b90d77e5fd784ada62ddd714d15ee2400c28e1cf"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42075.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.9.0"},{"fixed":"6.9.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42075.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}