FKIE_CVE-2023-53525

Vulnerability from fkie_nvd - Published: 2025-10-01 12:15 - Updated: 2026-01-27 18:57
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/cma: Allow UD qp_type to join multicast only As for multicast: - The SIDR is the only mode that makes sense; - Besides PS_UDP, other port spaces like PS_IB is also allowed, as it is UD compatible. In this case qkey also needs to be set [1]. This patch allows only UD qp_type to join multicast, and set qkey to default if it's not set, to fix an uninit-value error: the ib->rec.qkey field is accessed without being initialized. ===================================================== BUG: KMSAN: uninit-value in cma_set_qkey drivers/infiniband/core/cma.c:510 [inline] BUG: KMSAN: uninit-value in cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570 cma_set_qkey drivers/infiniband/core/cma.c:510 [inline] cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570 cma_iboe_join_multicast drivers/infiniband/core/cma.c:4782 [inline] rdma_join_multicast+0x2b83/0x30a0 drivers/infiniband/core/cma.c:4814 ucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479 ucma_join_multicast+0x1e3/0x250 drivers/infiniband/core/ucma.c:1546 ucma_write+0x639/0x6d0 drivers/infiniband/core/ucma.c:1732 vfs_write+0x8ce/0x2030 fs/read_write.c:588 ksys_write+0x28c/0x520 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __ia32_sys_write+0xdb/0x120 fs/read_write.c:652 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline] __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Local variable ib.i created at: cma_iboe_join_multicast drivers/infiniband/core/cma.c:4737 [inline] rdma_join_multicast+0x586/0x30a0 drivers/infiniband/core/cma.c:4814 ucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479 CPU: 0 PID: 29874 Comm: syz-executor.3 Not tainted 5.16.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ===================================================== [1] https://lore.kernel.org/linux-rdma/20220117183832.GD84788@nvidia.com/
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/02eabb635bc64bd1e3a7cf887d6d182bffb64b99Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/48e8e7851dc0b1584d83817a78fc7108c8904b54Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/58e84f6b3e84e46524b7e5a916b53c1ad798bc8fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae11498851423d6de27aebfe12a5ee85060ab1d5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bb18b9dbac2bbdf7695e0bfaac4bf944ff7b207dPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.3
linux linux_kernel 6.3
linux linux_kernel 6.3
linux linux_kernel 6.3
linux linux_kernel 6.3
linux linux_kernel 6.3
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cma: Allow UD qp_type to join multicast only\n\nAs for multicast:\n- The SIDR is the only mode that makes sense;\n- Besides PS_UDP, other port spaces like PS_IB is also allowed, as it is\n  UD compatible. In this case qkey also needs to be set [1].\n\nThis patch allows only UD qp_type to join multicast, and set qkey to\ndefault if it\u0027s not set, to fix an uninit-value error: the ib-\u003erec.qkey\nfield is accessed without being initialized.\n\n=====================================================\nBUG: KMSAN: uninit-value in cma_set_qkey drivers/infiniband/core/cma.c:510 [inline]\nBUG: KMSAN: uninit-value in cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570\n cma_set_qkey drivers/infiniband/core/cma.c:510 [inline]\n cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570\n cma_iboe_join_multicast drivers/infiniband/core/cma.c:4782 [inline]\n rdma_join_multicast+0x2b83/0x30a0 drivers/infiniband/core/cma.c:4814\n ucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479\n ucma_join_multicast+0x1e3/0x250 drivers/infiniband/core/ucma.c:1546\n ucma_write+0x639/0x6d0 drivers/infiniband/core/ucma.c:1732\n vfs_write+0x8ce/0x2030 fs/read_write.c:588\n ksys_write+0x28c/0x520 fs/read_write.c:643\n __do_sys_write fs/read_write.c:655 [inline]\n __se_sys_write fs/read_write.c:652 [inline]\n __ia32_sys_write+0xdb/0x120 fs/read_write.c:652\n do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]\n __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180\n do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205\n do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248\n entry_SYSENTER_compat_after_hwframe+0x4d/0x5c\n\nLocal variable ib.i created at:\ncma_iboe_join_multicast drivers/infiniband/core/cma.c:4737 [inline]\nrdma_join_multicast+0x586/0x30a0 drivers/infiniband/core/cma.c:4814\nucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479\n\nCPU: 0 PID: 29874 Comm: syz-executor.3 Not tainted 5.16.0-rc3-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n=====================================================\n\n[1] https://lore.kernel.org/linux-rdma/20220117183832.GD84788@nvidia.com/"
    }
  ],
  "id": "CVE-2023-53525",
  "lastModified": "2026-01-27T18:57:34.063",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2025-10-01T12:15:57.037",
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  "vulnStatus": "Analyzed",
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      "source": "nvd@nist.gov",
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}


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