CVE-2025-39857 (GCVE-0-2025-39857)
Vulnerability from cvelistv5
Published
2025-09-19 15:26
Modified
2025-09-19 15:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync() BUG: kernel NULL pointer dereference, address: 00000000000002ec PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP PTI CPU: 28 UID: 0 PID: 343 Comm: kworker/28:1 Kdump: loaded Tainted: G OE 6.17.0-rc2+ #9 NONE Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 Workqueue: smc_hs_wq smc_listen_work [smc] RIP: 0010:smc_ib_is_sg_need_sync+0x9e/0xd0 [smc] ... Call Trace: <TASK> smcr_buf_map_link+0x211/0x2a0 [smc] __smc_buf_create+0x522/0x970 [smc] smc_buf_create+0x3a/0x110 [smc] smc_find_rdma_v2_device_serv+0x18f/0x240 [smc] ? smc_vlan_by_tcpsk+0x7e/0xe0 [smc] smc_listen_find_device+0x1dd/0x2b0 [smc] smc_listen_work+0x30f/0x580 [smc] process_one_work+0x18c/0x340 worker_thread+0x242/0x360 kthread+0xe7/0x220 ret_from_fork+0x13a/0x160 ret_from_fork_asm+0x1a/0x30 </TASK> If the software RoCE device is used, ibdev->dma_device is a null pointer. As a result, the problem occurs. Null pointer detection is added to prevent problems.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0cdf1fd8fc59d44a48c694324611136910301ef9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34f17cbe027050b8d5316ea1b6f9bd7c378e92de
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba1e9421cf1a8369d25c3832439702a015d6b5f9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb929910bd4b4165920fa06a87b22cc6cae92e0e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f18d9b3abf9c6587372cc702f963a7592277ed56
Impacted products
Vendor Product Version
Linux Linux Version: 0ef69e788411cba2af017db731a9fc62d255e9ac
Version: 0ef69e788411cba2af017db731a9fc62d255e9ac
Version: 0ef69e788411cba2af017db731a9fc62d255e9ac
Version: 0ef69e788411cba2af017db731a9fc62d255e9ac
Version: 0ef69e788411cba2af017db731a9fc62d255e9ac
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/smc/smc_ib.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "0cdf1fd8fc59d44a48c694324611136910301ef9",
              "status": "affected",
              "version": "0ef69e788411cba2af017db731a9fc62d255e9ac",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "0ef69e788411cba2af017db731a9fc62d255e9ac",
              "versionType": "git"
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            {
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              "versionType": "git"
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            {
              "lessThan": "34f17cbe027050b8d5316ea1b6f9bd7c378e92de",
              "status": "affected",
              "version": "0ef69e788411cba2af017db731a9fc62d255e9ac",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "0ef69e788411cba2af017db731a9fc62d255e9ac",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/smc/smc_ib.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": "6.1.*",
              "status": "unaffected",
              "version": "6.1.151",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.105",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17-rc5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.151",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.105",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.46",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.6",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17-rc5",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()\n\nBUG: kernel NULL pointer dereference, address: 00000000000002ec\nPGD 0 P4D 0\nOops: Oops: 0000 [#1] SMP PTI\nCPU: 28 UID: 0 PID: 343 Comm: kworker/28:1 Kdump: loaded Tainted: G        OE       6.17.0-rc2+ #9 NONE\nTainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\nWorkqueue: smc_hs_wq smc_listen_work [smc]\nRIP: 0010:smc_ib_is_sg_need_sync+0x9e/0xd0 [smc]\n...\nCall Trace:\n \u003cTASK\u003e\n smcr_buf_map_link+0x211/0x2a0 [smc]\n __smc_buf_create+0x522/0x970 [smc]\n smc_buf_create+0x3a/0x110 [smc]\n smc_find_rdma_v2_device_serv+0x18f/0x240 [smc]\n ? smc_vlan_by_tcpsk+0x7e/0xe0 [smc]\n smc_listen_find_device+0x1dd/0x2b0 [smc]\n smc_listen_work+0x30f/0x580 [smc]\n process_one_work+0x18c/0x340\n worker_thread+0x242/0x360\n kthread+0xe7/0x220\n ret_from_fork+0x13a/0x160\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n\nIf the software RoCE device is used, ibdev-\u003edma_device is a null pointer.\nAs a result, the problem occurs. Null pointer detection is added to\nprevent problems."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-19T15:26:28.225Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0cdf1fd8fc59d44a48c694324611136910301ef9"
        },
        {
          "url": "https://git.kernel.org/stable/c/f18d9b3abf9c6587372cc702f963a7592277ed56"
        },
        {
          "url": "https://git.kernel.org/stable/c/eb929910bd4b4165920fa06a87b22cc6cae92e0e"
        },
        {
          "url": "https://git.kernel.org/stable/c/34f17cbe027050b8d5316ea1b6f9bd7c378e92de"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba1e9421cf1a8369d25c3832439702a015d6b5f9"
        }
      ],
      "title": "net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39857",
    "datePublished": "2025-09-19T15:26:28.225Z",
    "dateReserved": "2025-04-16T07:20:57.142Z",
    "dateUpdated": "2025-09-19T15:26:28.225Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-39857\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-19T16:15:44.650\",\"lastModified\":\"2025-09-19T16:15:44.650\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()\\n\\nBUG: kernel NULL pointer dereference, address: 00000000000002ec\\nPGD 0 P4D 0\\nOops: Oops: 0000 [#1] SMP PTI\\nCPU: 28 UID: 0 PID: 343 Comm: kworker/28:1 Kdump: loaded Tainted: G        OE       6.17.0-rc2+ #9 NONE\\nTainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\\nWorkqueue: smc_hs_wq smc_listen_work [smc]\\nRIP: 0010:smc_ib_is_sg_need_sync+0x9e/0xd0 [smc]\\n...\\nCall Trace:\\n \u003cTASK\u003e\\n smcr_buf_map_link+0x211/0x2a0 [smc]\\n __smc_buf_create+0x522/0x970 [smc]\\n smc_buf_create+0x3a/0x110 [smc]\\n smc_find_rdma_v2_device_serv+0x18f/0x240 [smc]\\n ? smc_vlan_by_tcpsk+0x7e/0xe0 [smc]\\n smc_listen_find_device+0x1dd/0x2b0 [smc]\\n smc_listen_work+0x30f/0x580 [smc]\\n process_one_work+0x18c/0x340\\n worker_thread+0x242/0x360\\n kthread+0xe7/0x220\\n ret_from_fork+0x13a/0x160\\n ret_from_fork_asm+0x1a/0x30\\n \u003c/TASK\u003e\\n\\nIf the software RoCE device is used, ibdev-\u003edma_device is a null pointer.\\nAs a result, the problem occurs. Null pointer detection is added to\\nprevent problems.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0cdf1fd8fc59d44a48c694324611136910301ef9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/34f17cbe027050b8d5316ea1b6f9bd7c378e92de\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ba1e9421cf1a8369d25c3832439702a015d6b5f9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb929910bd4b4165920fa06a87b22cc6cae92e0e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f18d9b3abf9c6587372cc702f963a7592277ed56\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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