{"schema_version":"1.9.0","id":"CVE-2022-48929","published":"2024-08-22T03:31:22.329Z","modified":"2026-08-12T03:51:16.483089469Z","related":["SUSE-SU-2024:3190-1","SUSE-SU-2024:3209-1","SUSE-SU-2024:3227-1","SUSE-SU-2024:3408-1","SUSE-SU-2024:3483-1"],"summary":"bpf: Fix crash due to out of bounds access into reg2btf_ids.","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix crash due to out of bounds access into reg2btf_ids.\n\nWhen commit e6ac2450d6de (\"bpf: Support bpf program calling kernel function\") added\nkfunc support, it defined reg2btf_ids as a cheap way to translate the verifier\nreg type to the appropriate btf_vmlinux BTF ID, however\ncommit c25b2ae13603 (\"bpf: Replace PTR_TO_XXX_OR_NULL with PTR_TO_XXX | PTR_MAYBE_NULL\")\nmoved the __BPF_REG_TYPE_MAX from the last member of bpf_reg_type enum to after\nthe base register types, and defined other variants using type flag\ncomposition. However, now, the direct usage of reg->type to index into\nreg2btf_ids may no longer fall into __BPF_REG_TYPE_MAX range, and hence lead to\nout of bounds access and kernel crash on dereference of bad pointer.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8d38cde47a7e17b646401fa92d916503caa5375e"},{"fixed":"8c39925e98d498b9531343066ef82ae39e41adae"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"77459bc4d5e2c6f24db845780b4d9d60cf82d06a"},{"fixed":"f0ce1bc9e0235dd7412240be493d7ea65ed9eadc"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c25b2ae136039ffa820c26138ed4a5e5f3ab3841"},{"fixed":"45ce4b4f9009102cd9f581196d480a59208690c1"}]}],"versions":["v5.16.11"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48929.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.16.11"},{"fixed":"5.16.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48929.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/45ce4b4f9009102cd9f581196d480a59208690c1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8c39925e98d498b9531343066ef82ae39e41adae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f0ce1bc9e0235dd7412240be493d7ea65ed9eadc"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48929.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-48929"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48929.json"}}