CVE-2022-50543 (GCVE-0-2022-50543)
Vulnerability from cvelistv5
Published
2025-10-07 15:21
Modified
2025-10-07 15:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix mr->map double free rxe_mr_cleanup() which tries to free mr->map again will be called when rxe_mr_init_user() fails: CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x45/0x5d panic+0x19e/0x349 end_report.part.0+0x54/0x7c kasan_report.cold+0xa/0xf rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe] __rxe_cleanup+0x10a/0x1e0 [rdma_rxe] rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe] ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs] ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs] ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs] This issue was firstly exposed since commit b18c7da63fcb ("RDMA/rxe: Fix memory leak in error path code") and then we fixed it in commit 8ff5f5d9d8cf ("RDMA/rxe: Prevent double freeing rxe_map_set()") but this fix was reverted together at last by commit 1e75550648da (Revert "RDMA/rxe: Create duplicate mapping tables for FMRs") Simply let rxe_mr_cleanup() always handle freeing the mr->map once it is successfully allocated.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1e75550648da1fa1cd1969e7597355de8fe8caf6
Version: 1e75550648da1fa1cd1969e7597355de8fe8caf6
Version: 1e75550648da1fa1cd1969e7597355de8fe8caf6
Version: e004a35e8148ad9fc438b0479884641acf382896
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/sw/rxe/rxe_mr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6ce577f09013206e36e674cd27da3707b2278268",
              "status": "affected",
              "version": "1e75550648da1fa1cd1969e7597355de8fe8caf6",
              "versionType": "git"
            },
            {
              "lessThan": "06f73568f553b5be6ba7f6fe274d333ea29fc46d",
              "status": "affected",
              "version": "1e75550648da1fa1cd1969e7597355de8fe8caf6",
              "versionType": "git"
            },
            {
              "lessThan": "7d984dac8f6bf4ebd3398af82b357e1d181ecaac",
              "status": "affected",
              "version": "1e75550648da1fa1cd1969e7597355de8fe8caf6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e004a35e8148ad9fc438b0479884641acf382896",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/sw/rxe/rxe_mr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.2",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.19.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix mr-\u003emap double free\n\nrxe_mr_cleanup() which tries to free mr-\u003emap again will be called when\nrxe_mr_init_user() fails:\n\n   CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25\n   Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n   Call Trace:\n    \u003cTASK\u003e\n    dump_stack_lvl+0x45/0x5d\n    panic+0x19e/0x349\n    end_report.part.0+0x54/0x7c\n    kasan_report.cold+0xa/0xf\n    rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe]\n    __rxe_cleanup+0x10a/0x1e0 [rdma_rxe]\n    rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe]\n    ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs]\n    ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs]\n    ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs]\n\nThis issue was firstly exposed since commit b18c7da63fcb (\"RDMA/rxe: Fix\nmemory leak in error path code\") and then we fixed it in commit\n8ff5f5d9d8cf (\"RDMA/rxe: Prevent double freeing rxe_map_set()\") but this\nfix was reverted together at last by commit 1e75550648da (Revert\n\"RDMA/rxe: Create duplicate mapping tables for FMRs\")\n\nSimply let rxe_mr_cleanup() always handle freeing the mr-\u003emap once it is\nsuccessfully allocated."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-07T15:21:07.939Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268"
        },
        {
          "url": "https://git.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46d"
        },
        {
          "url": "https://git.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac"
        }
      ],
      "title": "RDMA/rxe: Fix mr-\u003emap double free",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50543",
    "datePublished": "2025-10-07T15:21:07.939Z",
    "dateReserved": "2025-10-07T15:15:38.667Z",
    "dateUpdated": "2025-10-07T15:21:07.939Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50543\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-07T16:15:38.687\",\"lastModified\":\"2025-10-08T19:38:32.610\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nRDMA/rxe: Fix mr-\u003emap double free\\n\\nrxe_mr_cleanup() which tries to free mr-\u003emap again will be called when\\nrxe_mr_init_user() fails:\\n\\n   CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25\\n   Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\\n   Call Trace:\\n    \u003cTASK\u003e\\n    dump_stack_lvl+0x45/0x5d\\n    panic+0x19e/0x349\\n    end_report.part.0+0x54/0x7c\\n    kasan_report.cold+0xa/0xf\\n    rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe]\\n    __rxe_cleanup+0x10a/0x1e0 [rdma_rxe]\\n    rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe]\\n    ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs]\\n    ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs]\\n    ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs]\\n\\nThis issue was firstly exposed since commit b18c7da63fcb (\\\"RDMA/rxe: Fix\\nmemory leak in error path code\\\") and then we fixed it in commit\\n8ff5f5d9d8cf (\\\"RDMA/rxe: Prevent double freeing rxe_map_set()\\\") but this\\nfix was reverted together at last by commit 1e75550648da (Revert\\n\\\"RDMA/rxe: Create duplicate mapping tables for FMRs\\\")\\n\\nSimply let rxe_mr_cleanup() always handle freeing the mr-\u003emap once it is\\nsuccessfully allocated.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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