{"id":"CVE-2023-52462","summary":"bpf: fix check for attempt to corrupt spilled pointer","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: fix check for attempt to corrupt spilled pointer\n\nWhen register is spilled onto a stack as a 1/2/4-byte register, we set\nslot_type[BPF_REG_SIZE - 1] (plus potentially few more below it,\ndepending on actual spill size). So to check if some stack slot has\nspilled register we need to consult slot_type[7], not slot_type[0].\n\nTo avoid the need to remember and double-check this in the future, just\nuse is_spilled_reg() helper.","modified":"2026-04-11T12:46:31.008289Z","published":"2024-02-23T14:46:22.900Z","related":["SUSE-SU-2024:0855-1","SUSE-SU-2024:1466-1","SUSE-SU-2024:1480-1","USN-6818-2","USN-6819-2"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52462.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2757f17972d87773b3677777f5682510f13c66ef"},{"type":"WEB","url":"https://git.kernel.org/stable/c/40617d45ea05535105e202a8a819e388a2b1f036"},{"type":"WEB","url":"https://git.kernel.org/stable/c/67e6707f07354ed1acb4e65552e97c60cf9d69cf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8dc15b0670594543c356567a1a45b0182ec63174"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab125ed3ec1c10ccc36bc98c7a4256ad114a3dae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc3e3c50a0a4cac1463967c110686189e4a59104"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52462.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52462"},{"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":"cdd73a5ed0840da88a3b9ad353f568e6f156d417"},{"fixed":"2757f17972d87773b3677777f5682510f13c66ef"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"07c286c10a9cedbd71f20269ff3a4e73d9aab2fe"},{"fixed":"67e6707f07354ed1acb4e65552e97c60cf9d69cf"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"27113c59b6d0a587b29ae72d4ff3f832f58b0651"},{"fixed":"fc3e3c50a0a4cac1463967c110686189e4a59104"},{"fixed":"8dc15b0670594543c356567a1a45b0182ec63174"},{"fixed":"40617d45ea05535105e202a8a819e388a2b1f036"},{"fixed":"ab125ed3ec1c10ccc36bc98c7a4256ad114a3dae"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52462.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.10.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.75"},{"fixed":"6.6.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.7.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52462.json"}}],"schema_version":"1.7.5"}