CVE-2023-54237 (GCVE-0-2023-54237)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:11 – Updated: 2025-12-30 12:11
VLAI?
Title
net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link() There is a certain chance to trigger the following panic: PID: 5900 TASK: ffff88c1c8af4100 CPU: 1 COMMAND: "kworker/1:48" #0 [ffff9456c1cc79a0] machine_kexec at ffffffff870665b7 #1 [ffff9456c1cc79f0] __crash_kexec at ffffffff871b4c7a #2 [ffff9456c1cc7ab0] crash_kexec at ffffffff871b5b60 #3 [ffff9456c1cc7ac0] oops_end at ffffffff87026ce7 #4 [ffff9456c1cc7ae0] page_fault_oops at ffffffff87075715 #5 [ffff9456c1cc7b58] exc_page_fault at ffffffff87ad0654 #6 [ffff9456c1cc7b80] asm_exc_page_fault at ffffffff87c00b62 [exception RIP: ib_alloc_mr+19] RIP: ffffffffc0c9cce3 RSP: ffff9456c1cc7c38 RFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000004 RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88c1ea281d00 R8: 000000020a34ffff R9: ffff88c1350bbb20 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000010 R14: ffff88c1ab040a50 R15: ffff88c1ea281d00 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #7 [ffff9456c1cc7c60] smc_ib_get_memory_region at ffffffffc0aff6df [smc] #8 [ffff9456c1cc7c88] smcr_buf_map_link at ffffffffc0b0278c [smc] #9 [ffff9456c1cc7ce0] __smc_buf_create at ffffffffc0b03586 [smc] The reason here is that when the server tries to create a second link, smc_llc_srv_add_link() has no protection and may add a new link to link group. This breaks the security environment protected by llc_conf_mutex.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2d2209f2018943d4152a21eff5b76f1952e0b435 , < f2f46de98c11d41ac8d22765f47ba54ce5480a5b (git)
Affected: 2d2209f2018943d4152a21eff5b76f1952e0b435 , < 0c764cc271d3aa6528ae1b3394babf34ac01f775 (git)
Affected: 2d2209f2018943d4152a21eff5b76f1952e0b435 , < e40b801b3603a8f90b46acbacdea3505c27f01c0 (git)
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    Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 6.1.16 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/smc/af_smc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f2f46de98c11d41ac8d22765f47ba54ce5480a5b",
              "status": "affected",
              "version": "2d2209f2018943d4152a21eff5b76f1952e0b435",
              "versionType": "git"
            },
            {
              "lessThan": "0c764cc271d3aa6528ae1b3394babf34ac01f775",
              "status": "affected",
              "version": "2d2209f2018943d4152a21eff5b76f1952e0b435",
              "versionType": "git"
            },
            {
              "lessThan": "e40b801b3603a8f90b46acbacdea3505c27f01c0",
              "status": "affected",
              "version": "2d2209f2018943d4152a21eff5b76f1952e0b435",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/smc/af_smc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.16",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.3",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()\n\nThere is a certain chance to trigger the following panic:\n\nPID: 5900   TASK: ffff88c1c8af4100  CPU: 1   COMMAND: \"kworker/1:48\"\n #0 [ffff9456c1cc79a0] machine_kexec at ffffffff870665b7\n #1 [ffff9456c1cc79f0] __crash_kexec at ffffffff871b4c7a\n #2 [ffff9456c1cc7ab0] crash_kexec at ffffffff871b5b60\n #3 [ffff9456c1cc7ac0] oops_end at ffffffff87026ce7\n #4 [ffff9456c1cc7ae0] page_fault_oops at ffffffff87075715\n #5 [ffff9456c1cc7b58] exc_page_fault at ffffffff87ad0654\n #6 [ffff9456c1cc7b80] asm_exc_page_fault at ffffffff87c00b62\n    [exception RIP: ib_alloc_mr+19]\n    RIP: ffffffffc0c9cce3  RSP: ffff9456c1cc7c38  RFLAGS: 00010202\n    RAX: 0000000000000000  RBX: 0000000000000002  RCX: 0000000000000004\n    RDX: 0000000000000010  RSI: 0000000000000000  RDI: 0000000000000000\n    RBP: ffff88c1ea281d00   R8: 000000020a34ffff   R9: ffff88c1350bbb20\n    R10: 0000000000000000  R11: 0000000000000001  R12: 0000000000000000\n    R13: 0000000000000010  R14: ffff88c1ab040a50  R15: ffff88c1ea281d00\n    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018\n #7 [ffff9456c1cc7c60] smc_ib_get_memory_region at ffffffffc0aff6df [smc]\n #8 [ffff9456c1cc7c88] smcr_buf_map_link at ffffffffc0b0278c [smc]\n #9 [ffff9456c1cc7ce0] __smc_buf_create at ffffffffc0b03586 [smc]\n\nThe reason here is that when the server tries to create a second link,\nsmc_llc_srv_add_link() has no protection and may add a new link to\nlink group. This breaks the security environment protected by\nllc_conf_mutex."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:11:27.028Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f2f46de98c11d41ac8d22765f47ba54ce5480a5b"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c764cc271d3aa6528ae1b3394babf34ac01f775"
        },
        {
          "url": "https://git.kernel.org/stable/c/e40b801b3603a8f90b46acbacdea3505c27f01c0"
        }
      ],
      "title": "net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54237",
    "datePublished": "2025-12-30T12:11:27.028Z",
    "dateReserved": "2025-12-30T12:06:44.508Z",
    "dateUpdated": "2025-12-30T12:11:27.028Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54237\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:12.193\",\"lastModified\":\"2025-12-31T20:42:43.210\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()\\n\\nThere is a certain chance to trigger the following panic:\\n\\nPID: 5900   TASK: ffff88c1c8af4100  CPU: 1   COMMAND: \\\"kworker/1:48\\\"\\n #0 [ffff9456c1cc79a0] machine_kexec at ffffffff870665b7\\n #1 [ffff9456c1cc79f0] __crash_kexec at ffffffff871b4c7a\\n #2 [ffff9456c1cc7ab0] crash_kexec at ffffffff871b5b60\\n #3 [ffff9456c1cc7ac0] oops_end at ffffffff87026ce7\\n #4 [ffff9456c1cc7ae0] page_fault_oops at ffffffff87075715\\n #5 [ffff9456c1cc7b58] exc_page_fault at ffffffff87ad0654\\n #6 [ffff9456c1cc7b80] asm_exc_page_fault at ffffffff87c00b62\\n    [exception RIP: ib_alloc_mr+19]\\n    RIP: ffffffffc0c9cce3  RSP: ffff9456c1cc7c38  RFLAGS: 00010202\\n    RAX: 0000000000000000  RBX: 0000000000000002  RCX: 0000000000000004\\n    RDX: 0000000000000010  RSI: 0000000000000000  RDI: 0000000000000000\\n    RBP: ffff88c1ea281d00   R8: 000000020a34ffff   R9: ffff88c1350bbb20\\n    R10: 0000000000000000  R11: 0000000000000001  R12: 0000000000000000\\n    R13: 0000000000000010  R14: ffff88c1ab040a50  R15: ffff88c1ea281d00\\n    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018\\n #7 [ffff9456c1cc7c60] smc_ib_get_memory_region at ffffffffc0aff6df [smc]\\n #8 [ffff9456c1cc7c88] smcr_buf_map_link at ffffffffc0b0278c [smc]\\n #9 [ffff9456c1cc7ce0] __smc_buf_create at ffffffffc0b03586 [smc]\\n\\nThe reason here is that when the server tries to create a second link,\\nsmc_llc_srv_add_link() has no protection and may add a new link to\\nlink group. This breaks the security environment protected by\\nllc_conf_mutex.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0c764cc271d3aa6528ae1b3394babf34ac01f775\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e40b801b3603a8f90b46acbacdea3505c27f01c0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f2f46de98c11d41ac8d22765f47ba54ce5480a5b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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