{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibbpf: Fix NULL pointer dereference in bpf_object__collect_prog_relos\n\nAn issue occurred while reading an ELF file in libbpf.c during fuzzing:\n\n\tProgram received signal SIGSEGV, Segmentation fault.\n\t0x0000000000958e97 in bpf_object.collect_prog_relos () at libbpf.c:4206\n\t4206 in libbpf.c\n\t(gdb) bt\n\t#0 0x0000000000958e97 in bpf_object.collect_prog_relos () at libbpf.c:4206\n\t#1 0x000000000094f9d6 in bpf_object.collect_relos () at libbpf.c:6706\n\t#2 0x000000000092bef3 in bpf_object_open () at libbpf.c:7437\n\t#3 0x000000000092c046 in bpf_object.open_mem () at libbpf.c:7497\n\t#4 0x0000000000924afa in LLVMFuzzerTestOneInput () at fuzz/bpf-object-fuzzer.c:16\n\t#5 0x000000000060be11 in testblitz_engine::fuzzer::Fuzzer::run_one ()\n\t#6 0x000000000087ad92 in tracing::span::Span::in_scope ()\n\t#7 0x00000000006078aa in testblitz_engine::fuzzer::util::walkdir ()\n\t#8 0x00000000005f3217 in testblitz_engine::entrypoint::main::{{closure}} ()\n\t#9 0x00000000005f2601 in main ()\n\t(gdb)\n\nscn_data was null at this code(tools/lib/bpf/src/libbpf.c):\n\n\tif (rel->r_offset % BPF_INSN_SZ || rel->r_offset >= scn_data->d_size) {\n\nThe scn_data is derived from the code above:\n\n\tscn = elf_sec_by_idx(obj, sec_idx);\n\tscn_data = elf_sec_data(obj, scn);\n\n\trelo_sec_name = elf_sec_str(obj, shdr->sh_name);\n\tsec_name = elf_sec_name(obj, scn);\n\tif (!relo_sec_name || !sec_name)// don't check whether scn_data is NULL\n\t\treturn -EINVAL;\n\nIn certain special scenarios, such as reading a malformed ELF file,\nit is possible that scn_data may be a null pointer"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "90dbf4535668",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "12473265f50c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "5f3e436832e8",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "ab26541270c7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "fc3a5534e2a8",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "5.15.149",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.77",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.16",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.4",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8-rc1",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/90dbf4535668042fac0d7201ce9e2c8c770c578a"
            },
            {
               "url": "https://git.kernel.org/stable/c/12473265f50c1e27b0dfd9735738ac418c4bfcce"
            },
            {
               "url": "https://git.kernel.org/stable/c/5f3e436832e86b826a6450eb8d1aaa51205a758e"
            },
            {
               "url": "https://git.kernel.org/stable/c/ab26541270c722eedf8eefd62797c3ce3d18a91b"
            },
            {
               "url": "https://git.kernel.org/stable/c/fc3a5534e2a8855427403113cbeb54af5837bbe0"
            }
         ],
         "title": "libbpf: Fix NULL pointer dereference in bpf_object__collect_prog_relos",
         "x_generator": {
            "engine": "bippy-4986f5686161"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2023-52592",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}