{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix re-attachment branch in bpf_tracing_prog_attach\n\nThe following case can cause a crash due to missing attach_btf:\n\n1) load rawtp program\n2) load fentry program with rawtp as target_fd\n3) create tracing link for fentry program with target_fd = 0\n4) repeat 3\n\nIn the end we have:\n\n- prog->aux->dst_trampoline == NULL\n- tgt_prog == NULL (because we did not provide target_fd to link_create)\n- prog->aux->attach_btf == NULL (the program was loaded with attach_prog_fd=X)\n- the program was loaded for tgt_prog but we have no way to find out which one\n\n    BUG: kernel NULL pointer dereference, address: 0000000000000058\n    Call Trace:\n     <TASK>\n     ? __die+0x20/0x70\n     ? page_fault_oops+0x15b/0x430\n     ? fixup_exception+0x22/0x330\n     ? exc_page_fault+0x6f/0x170\n     ? asm_exc_page_fault+0x22/0x30\n     ? bpf_tracing_prog_attach+0x279/0x560\n     ? btf_obj_id+0x5/0x10\n     bpf_tracing_prog_attach+0x439/0x560\n     __sys_bpf+0x1cf4/0x2de0\n     __x64_sys_bpf+0x1c/0x30\n     do_syscall_64+0x41/0xf0\n     entry_SYSCALL_64_after_hwframe+0x6e/0x76\n\nReturn -EINVAL in this situation."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/bpf/syscall.c"
               ],
               "versions": [
                  {
                     "version": "f3a95075549e",
                     "lessThan": "a7b98aa10f89",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f3a95075549e",
                     "lessThan": "6cc9c0af0aa0",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f3a95075549e",
                     "lessThan": "8c8bcd45e9b1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f3a95075549e",
                     "lessThan": "50ae82f080cf",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f3a95075549e",
                     "lessThan": "715d82ba636c",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/bpf/syscall.c"
               ],
               "versions": [
                  {
                     "version": "5.13",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.13",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.148",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.75",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.14",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.2",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/a7b98aa10f895e2569403896f2d19b73b6c95653"
            },
            {
               "url": "https://git.kernel.org/stable/c/6cc9c0af0aa06f781fa515a1734b1a4239dfd2c0"
            },
            {
               "url": "https://git.kernel.org/stable/c/8c8bcd45e9b10eef12321f08d2e5be33d615509c"
            },
            {
               "url": "https://git.kernel.org/stable/c/50ae82f080cf87e84828f066c31723b781d68f5b"
            },
            {
               "url": "https://git.kernel.org/stable/c/715d82ba636cb3629a6e18a33bb9dbe53f9936ee"
            }
         ],
         "title": "bpf: Fix re-attachment branch in bpf_tracing_prog_attach",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-26591",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}