{"id":"CVE-2022-48929","state":"PUBLISHED","title":"bpf: Fix crash due to out of bounds access into reg2btf_ids.","description":"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.","publishedAt":"2024-08-22T03:31:22.329Z","updatedAt":"2026-05-11T18:49:52.882Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8d38cde47a7e17b646401fa92d916503caa5375e","status":"affected","lessThan":"8c39925e98d498b9531343066ef82ae39e41adae","versionType":"git"},{"version":"77459bc4d5e2c6f24db845780b4d9d60cf82d06a","status":"affected","lessThan":"f0ce1bc9e0235dd7412240be493d7ea65ed9eadc","versionType":"git"},{"version":"c25b2ae136039ffa820c26138ed4a5e5f3ab3841","status":"affected","lessThan":"45ce4b4f9009102cd9f581196d480a59208690c1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/btf.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5.16.11","status":"affected","lessThan":"5.16.12","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/btf.c"]}],"references":["https://git.kernel.org/stable/c/8c39925e98d498b9531343066ef82ae39e41adae","https://git.kernel.org/stable/c/f0ce1bc9e0235dd7412240be493d7ea65ed9eadc","https://git.kernel.org/stable/c/45ce4b4f9009102cd9f581196d480a59208690c1"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/48xxx/CVE-2022-48929.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-48929","state":"PUBLISHED","datePublished":"2024-08-22T03:31:22.329Z","dateUpdated":"2026-05-11T18:49:52.882Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-08-21T06:06:23.298Z"},"containers":{"cna":{"title":"bpf: Fix crash due to out of bounds access into reg2btf_ids.","descriptions":[{"lang":"en","value":"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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8d38cde47a7e17b646401fa92d916503caa5375e","status":"affected","lessThan":"8c39925e98d498b9531343066ef82ae39e41adae","versionType":"git"},{"version":"77459bc4d5e2c6f24db845780b4d9d60cf82d06a","status":"affected","lessThan":"f0ce1bc9e0235dd7412240be493d7ea65ed9eadc","versionType":"git"},{"version":"c25b2ae136039ffa820c26138ed4a5e5f3ab3841","status":"affected","lessThan":"45ce4b4f9009102cd9f581196d480a59208690c1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/btf.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5.16.11","status":"affected","lessThan":"5.16.12","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/btf.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8c39925e98d498b9531343066ef82ae39e41adae"},{"url":"https://git.kernel.org/stable/c/f0ce1bc9e0235dd7412240be493d7ea65ed9eadc"},{"url":"https://git.kernel.org/stable/c/45ce4b4f9009102cd9f581196d480a59208690c1"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:49:52.882Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16.11","versionEndExcluding":"5.16.12"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2022-48929","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T15:32:56.249126Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-12T17:33:00.206Z"}}]}}}