gsd - gsd-2023-52603

gsd-2023-52603

Vulnerability from gsd

Modified

2024-03-03 06:01

Details

In the Linux kernel, the following vulnerability has been resolved: UBSAN: array-index-out-of-bounds in dtSplitRoot Syzkaller reported the following issue: oop0: detected capacity change from 0 to 32768 UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9 index -2 is out of range for type 'struct dtslot [128]' CPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283 dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971 dtSplitUp fs/jfs/jfs_dtree.c:985 [inline] dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863 jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270 vfs_mkdir+0x3b3/0x590 fs/namei.c:4013 do_mkdirat+0x279/0x550 fs/namei.c:4038 __do_sys_mkdirat fs/namei.c:4053 [inline] __se_sys_mkdirat fs/namei.c:4051 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcdc0113fd9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdc0113fd9 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0 R10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000 R13: 0000000000000000 R14: 00083878000000f8 R15: 0000000000000000 </TASK> The issue is caused when the value of fsi becomes less than -1. The check to break the loop when fsi value becomes -1 is present but syzbot was able to produce value less than -1 which cause the error. This patch simply add the change for the values less than 0. The patch is tested via syzbot.

Aliases

CVE-2023-52603

JSON

To clipboard

{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-52603"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUBSAN: array-index-out-of-bounds in dtSplitRoot\n\nSyzkaller reported the following issue:\n\noop0: detected capacity change from 0 to 32768\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9\nindex -2 is out of range for type \u0027struct dtslot [128]\u0027\nCPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:151 [inline]\n __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283\n dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971\n dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]\n dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863\n jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270\n vfs_mkdir+0x3b3/0x590 fs/namei.c:4013\n do_mkdirat+0x279/0x550 fs/namei.c:4038\n __do_sys_mkdirat fs/namei.c:4053 [inline]\n __se_sys_mkdirat fs/namei.c:4051 [inline]\n __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fcdc0113fd9\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdc0113fd9\nRDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003\nRBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0\nR10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000\nR13: 0000000000000000 R14: 00083878000000f8 R15: 0000000000000000\n \u003c/TASK\u003e\n\nThe issue is caused when the value of fsi becomes less than -1.\nThe check to break the loop when fsi value becomes -1 is present\nbut syzbot was able to produce value less than -1 which cause the error.\nThis patch simply add the change for the values less than 0.\n\nThe patch is tested via syzbot.",
      "id": "GSD-2023-52603",
      "modified": "2024-03-03T06:01:51.507616Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2023-52603",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "1da177e4c3f4",
                          "version_value": "e30b52a2ea3d"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "lessThanOrEqual": "4.19.*",
                                "status": "unaffected",
                                "version": "4.19.307",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "5.4.*",
                                "status": "unaffected",
                                "version": "5.4.269",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "5.10.*",
                                "status": "unaffected",
                                "version": "5.10.210",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "5.15.*",
                                "status": "unaffected",
                                "version": "5.15.149",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "6.1.*",
                                "status": "unaffected",
                                "version": "6.1.77",
                                "versionType": "custom"
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                              {
                                "lessThanOrEqual": "6.6.*",
                                "status": "unaffected",
                                "version": "6.6.16",
                                "versionType": "custom"
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                              {
                                "lessThanOrEqual": "6.7.*",
                                "status": "unaffected",
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                                "versionType": "custom"
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                              {
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                                "versionType": "original_commit_for_fix"
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                      ]
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      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUBSAN: array-index-out-of-bounds in dtSplitRoot\n\nSyzkaller reported the following issue:\n\noop0: detected capacity change from 0 to 32768\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9\nindex -2 is out of range for type \u0027struct dtslot [128]\u0027\nCPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:151 [inline]\n __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283\n dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971\n dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]\n dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863\n jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270\n vfs_mkdir+0x3b3/0x590 fs/namei.c:4013\n do_mkdirat+0x279/0x550 fs/namei.c:4038\n __do_sys_mkdirat fs/namei.c:4053 [inline]\n __se_sys_mkdirat fs/namei.c:4051 [inline]\n __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fcdc0113fd9\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdc0113fd9\nRDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003\nRBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0\nR10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000\nR13: 0000000000000000 R14: 00083878000000f8 R15: 0000000000000000\n \u003c/TASK\u003e\n\nThe issue is caused when the value of fsi becomes less than -1.\nThe check to break the loop when fsi value becomes -1 is present\nbut syzbot was able to produce value less than -1 which cause the error.\nThis patch simply add the change for the values less than 0.\n\nThe patch is tested via syzbot."
          }
        ]
      },
      "generator": {
        "engine": "bippy-8df59b4913de"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af"
          },
          {
            "name": "https://git.kernel.org/stable/c/fd3486a893778770557649fe28afa5e463d4ed07",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/fd3486a893778770557649fe28afa5e463d4ed07"
          },
          {
            "name": "https://git.kernel.org/stable/c/7aa33854477d9c346f5560a1a1fcb3fe7783e2a8",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/7aa33854477d9c346f5560a1a1fcb3fe7783e2a8"
          },
          {
            "name": "https://git.kernel.org/stable/c/e4ce01c25ccbea02a09a5291c21749b1fc358e39",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/e4ce01c25ccbea02a09a5291c21749b1fc358e39"
          },
          {
            "name": "https://git.kernel.org/stable/c/e4cbc857d75d4e22a1f75446e7480b1f305d8d60",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/e4cbc857d75d4e22a1f75446e7480b1f305d8d60"
          },
          {
            "name": "https://git.kernel.org/stable/c/edff092a59260bf0b0a2eba219cb3da6372c2f9f",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/edff092a59260bf0b0a2eba219cb3da6372c2f9f"
          },
          {
            "name": "https://git.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2"
          },
          {
            "name": "https://git.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUBSAN: array-index-out-of-bounds in dtSplitRoot\n\nSyzkaller reported the following issue:\n\noop0: detected capacity change from 0 to 32768\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9\nindex -2 is out of range for type \u0027struct dtslot [128]\u0027\nCPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:151 [inline]\n __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283\n dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971\n dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]\n dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863\n jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270\n vfs_mkdir+0x3b3/0x590 fs/namei.c:4013\n do_mkdirat+0x279/0x550 fs/namei.c:4038\n __do_sys_mkdirat fs/namei.c:4053 [inline]\n __se_sys_mkdirat fs/namei.c:4051 [inline]\n __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fcdc0113fd9\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdc0113fd9\nRDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003\nRBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0\nR10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000\nR13: 0000000000000000 R14: 00083878000000f8 R15: 0000000000000000\n \u003c/TASK\u003e\n\nThe issue is caused when the value of fsi becomes less than -1.\nThe check to break the loop when fsi value becomes -1 is present\nbut syzbot was able to produce value less than -1 which cause the error.\nThis patch simply add the change for the values less than 0.\n\nThe patch is tested via syzbot."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: UBSAN: array-index-out-of-bounds en dtSplitRoot Syzkaller inform\u00f3 el siguiente problema: oop0: se detect\u00f3 un cambio de capacidad de 0 a 32768 UBSAN: array-index-out-of- l\u00edmites en fs/jfs/jfs_dtree.c:1971:9 \u00edndice -2 est\u00e1 fuera de rango para el tipo \u0027struct dtslot [128]\u0027 CPU: 0 PID: 3613 Comm: syz-executor270 No contaminado 6.0.0-syzkaller-09423- g493ffd6605b2 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 22/09/2022 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c: 106 ubsan_epilogue lib/ubsan.c:151 [en l\u00ednea] __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283 dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971 dtSplitUp fs/jfs/jfs_dtree.c:9 85 [en l\u00ednea ] dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863 jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270 vfs_mkdir+0x3b3/0x590 fs/namei.c:4013 do_mkdirat+0x279/0x550 f s/namei. c:4038 __do_sys_mkdirat fs/namei.c:4053 [en l\u00ednea] __se_sys_mkdirat fs/namei.c:4051 [en l\u00ednea] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051 do_syscall_x64 arch/x86/entry/common.c:50 [ inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcdc0113fd9 C\u00f3digo: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 F7 48 89 D6 48 89 CA 4D 89 C2 4D 89 C8 4C 8B 4C 24 08 0F 05 \u0026lt;48\u0026gt; 3D 01 F0 FF FF 73 01 C3 48 C7 C1 C0 FF FF FF F7 D8 64 89 01 48 RSP: 002B: 00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00000000000000000 RCX: 00007fcdc0113fd9 RDX: 00000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0 R10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000 R13: 0000000000000000 R14: 00083878000000f8 R15 : 0000000000000000  El problema se produce cuando el valor de fsi es inferior a -1. La verificaci\u00f3n para romper el ciclo cuando el valor fsi se convierte en -1 est\u00e1 presente, pero syzbot pudo producir un valor menor que -1, lo que causa el error. Este parche simplemente agrega el cambio para los valores menores que 0. El parche se prueba a trav\u00e9s de syzbot."
          }
        ],
        "id": "CVE-2023-52603",
        "lastModified": "2024-03-06T15:18:08.093",
        "metrics": {},
        "published": "2024-03-06T07:15:11.120",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7aa33854477d9c346f5560a1a1fcb3fe7783e2a8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e4cbc857d75d4e22a1f75446e7480b1f305d8d60"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e4ce01c25ccbea02a09a5291c21749b1fc358e39"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/edff092a59260bf0b0a2eba219cb3da6372c2f9f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/fd3486a893778770557649fe28afa5e463d4ed07"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}

cve-2023-52603

Vulnerability from cvelistv5

Published

2024-03-06 06:45

Modified

2024-11-04 14:49

Severity ?

Summary

UBSAN: array-index-out-of-bounds in dtSplitRoot

References

▼	URL	Tags
	https://git.kernel.org/stable/c/e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af
	https://git.kernel.org/stable/c/fd3486a893778770557649fe28afa5e463d4ed07
	https://git.kernel.org/stable/c/7aa33854477d9c346f5560a1a1fcb3fe7783e2a8
	https://git.kernel.org/stable/c/e4ce01c25ccbea02a09a5291c21749b1fc358e39
	https://git.kernel.org/stable/c/e4cbc857d75d4e22a1f75446e7480b1f305d8d60
	https://git.kernel.org/stable/c/edff092a59260bf0b0a2eba219cb3da6372c2f9f
	https://git.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2
	https://git.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16

Impacted products

▼	Vendor	Product
	Linux	Linux
	Linux	Linux

Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUBSAN: array-index-out-of-bounds in dtSplitRoot\n\nSyzkaller reported the following issue:\n\noop0: detected capacity change from 0 to 32768\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9\nindex -2 is out of range for type \u0027struct dtslot [128]\u0027\nCPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:151 [inline]\n __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283\n dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971\n dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]\n dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863\n jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270\n vfs_mkdir+0x3b3/0x590 fs/namei.c:4013\n do_mkdirat+0x279/0x550 fs/namei.c:4038\n __do_sys_mkdirat fs/namei.c:4053 [inline]\n __se_sys_mkdirat fs/namei.c:4051 [inline]\n __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fcdc0113fd9\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdc0113fd9\nRDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003\nRBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0\nR10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000\nR13: 0000000000000000 R14: 00083878000000f8 R15: 0000000000000000\n \u003c/TASK\u003e\n\nThe issue is caused when the value of fsi becomes less than -1.\nThe check to break the loop when fsi value becomes -1 is present\nbut syzbot was able to produce value less than -1 which cause the error.\nThis patch simply add the change for the values less than 0.\n\nThe patch is tested via syzbot."
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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