CVE-2022-49870 (GCVE-0-2022-49870)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:10 – Updated: 2025-05-04 08:47
VLAI?
Title
capabilities: fix undefined behavior in bit shift for CAP_TO_MASK
Summary
In the Linux kernel, the following vulnerability has been resolved: capabilities: fix undefined behavior in bit shift for CAP_TO_MASK Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds in security/commoncap.c:1252:2 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c cap_task_prctl+0x561/0x6f0 security_task_prctl+0x5a/0xb0 __x64_sys_prctl+0x61/0x8f0 do_syscall_64+0x58/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd </TASK>
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e338d263a76af78fe8f38a72131188b58fceb591 , < 5b79fa628e2ab789e629a83cd211ef9b4c1a593e (git)
Affected: e338d263a76af78fe8f38a72131188b58fceb591 , < 65b0bc7a0690861812ade523d19f82688ab819dc (git)
Affected: e338d263a76af78fe8f38a72131188b58fceb591 , < dbaab08c8677d598244d21afb7818e44e1c5d826 (git)
Affected: e338d263a76af78fe8f38a72131188b58fceb591 , < 5661f111a1616ac105ec8cec81bff99b60f847ac (git)
Affected: e338d263a76af78fe8f38a72131188b58fceb591 , < fcbd2b336834bd24e1d9454ad5737856470c10d7 (git)
Affected: e338d263a76af78fe8f38a72131188b58fceb591 , < 151dc8087b5609e53b069c068e3f3ee100efa586 (git)
Affected: e338d263a76af78fe8f38a72131188b58fceb591 , < 27bdb134c043ff32c459d98f16550d0ffa0b3c34 (git)
Affected: e338d263a76af78fe8f38a72131188b58fceb591 , < 46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13 (git)
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    Linux Linux Affected: 2.6.25
Unaffected: 0 , < 2.6.25 (semver)
Unaffected: 4.9.334 , ≤ 4.9.* (semver)
Unaffected: 4.14.300 , ≤ 4.14.* (semver)
Unaffected: 4.19.267 , ≤ 4.19.* (semver)
Unaffected: 5.4.225 , ≤ 5.4.* (semver)
Unaffected: 5.10.155 , ≤ 5.10.* (semver)
Unaffected: 5.15.79 , ≤ 5.15.* (semver)
Unaffected: 6.0.9 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/uapi/linux/capability.h"
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            },
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              "lessThan": "2.6.25",
              "status": "unaffected",
              "version": "0",
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            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.334",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.300",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.267",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.225",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.9",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncapabilities: fix undefined behavior in bit shift for CAP_TO_MASK\n\nShifting signed 32-bit value by 31 bits is undefined, so changing\nsignificant bit to unsigned. The UBSAN warning calltrace like below:\n\nUBSAN: shift-out-of-bounds in security/commoncap.c:1252:2\nleft shift of 1 by 31 places cannot be represented in type \u0027int\u0027\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x7d/0xa5\n dump_stack+0x15/0x1b\n ubsan_epilogue+0xe/0x4e\n __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c\n cap_task_prctl+0x561/0x6f0\n security_task_prctl+0x5a/0xb0\n __x64_sys_prctl+0x61/0x8f0\n do_syscall_64+0x58/0x80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n \u003c/TASK\u003e"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:47:22.346Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5b79fa628e2ab789e629a83cd211ef9b4c1a593e"
        },
        {
          "url": "https://git.kernel.org/stable/c/65b0bc7a0690861812ade523d19f82688ab819dc"
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        {
          "url": "https://git.kernel.org/stable/c/dbaab08c8677d598244d21afb7818e44e1c5d826"
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        {
          "url": "https://git.kernel.org/stable/c/5661f111a1616ac105ec8cec81bff99b60f847ac"
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          "url": "https://git.kernel.org/stable/c/fcbd2b336834bd24e1d9454ad5737856470c10d7"
        },
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          "url": "https://git.kernel.org/stable/c/151dc8087b5609e53b069c068e3f3ee100efa586"
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          "url": "https://git.kernel.org/stable/c/27bdb134c043ff32c459d98f16550d0ffa0b3c34"
        },
        {
          "url": "https://git.kernel.org/stable/c/46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13"
        }
      ],
      "title": "capabilities: fix undefined behavior in bit shift for CAP_TO_MASK",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49870",
    "datePublished": "2025-05-01T14:10:21.134Z",
    "dateReserved": "2025-05-01T14:05:17.237Z",
    "dateUpdated": "2025-05-04T08:47:22.346Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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