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CVE-2022-50885 (GCVE-0-2022-50885)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:34 – Updated: 2026-08-05 08:59
VLAI
Title
RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed There is a null-ptr-deref when mount.cifs over rdma: BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe] Read of size 8 at addr 0000000000000018 by task mount.cifs/3046 CPU: 2 PID: 3046 Comm: mount.cifs Not tainted 6.1.0-rc5+ #62 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc3 Call Trace: <TASK> dump_stack_lvl+0x34/0x44 kasan_report+0xad/0x130 rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe] execute_in_process_context+0x25/0x90 __rxe_cleanup+0x101/0x1d0 [rdma_rxe] rxe_create_qp+0x16a/0x180 [rdma_rxe] create_qp.part.0+0x27d/0x340 ib_create_qp_kernel+0x73/0x160 rdma_create_qp+0x100/0x230 _smbd_get_connection+0x752/0x20f0 smbd_get_connection+0x21/0x40 cifs_get_tcp_session+0x8ef/0xda0 mount_get_conns+0x60/0x750 cifs_mount+0x103/0xd00 cifs_smb3_do_mount+0x1dd/0xcb0 smb3_get_tree+0x1d5/0x300 vfs_get_tree+0x41/0xf0 path_mount+0x9b3/0xdd0 __x64_sys_mount+0x190/0x1d0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 The root cause of the issue is the socket create failed in rxe_qp_init_req(). So move the reset rxe_qp_do_cleanup() after the NULL ptr check.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < ee24de095569935eba600f7735e8e8ddea5b418e (git)
Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < 7340ca9f782be6fbe3f64a134dc112772764f766 (git)
Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < bd7106a6004f1077a365ca7f5a99c7a708e20714 (git)
Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < 6bb5a62bfd624039b05157745c234068508393a9 (git)
Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < f64f08b9e6fb305a25dd75329e06ae342b9ce336 (git)
Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < 5b924632d84a60bc0c7fe6e9bbbce99d03908957 (git)
Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < 821f9a18210f6b9fd6792471714c799607b25db4 (git)
Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < f67376d801499f4fa0838c18c1efcad8840e550d (git)
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Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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          "programFiles": [
            "drivers/infiniband/sw/rxe/rxe_qp.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed\n\nThere is a null-ptr-deref when mount.cifs over rdma:\n\n  BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]\n  Read of size 8 at addr 0000000000000018 by task mount.cifs/3046\n\n  CPU: 2 PID: 3046 Comm: mount.cifs Not tainted 6.1.0-rc5+ #62\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc3\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x34/0x44\n   kasan_report+0xad/0x130\n   rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]\n   execute_in_process_context+0x25/0x90\n   __rxe_cleanup+0x101/0x1d0 [rdma_rxe]\n   rxe_create_qp+0x16a/0x180 [rdma_rxe]\n   create_qp.part.0+0x27d/0x340\n   ib_create_qp_kernel+0x73/0x160\n   rdma_create_qp+0x100/0x230\n   _smbd_get_connection+0x752/0x20f0\n   smbd_get_connection+0x21/0x40\n   cifs_get_tcp_session+0x8ef/0xda0\n   mount_get_conns+0x60/0x750\n   cifs_mount+0x103/0xd00\n   cifs_smb3_do_mount+0x1dd/0xcb0\n   smb3_get_tree+0x1d5/0x300\n   vfs_get_tree+0x41/0xf0\n   path_mount+0x9b3/0xdd0\n   __x64_sys_mount+0x190/0x1d0\n   do_syscall_64+0x35/0x80\n   entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe root cause of the issue is the socket create failed in\nrxe_qp_init_req().\n\nSo move the reset rxe_qp_do_cleanup() after the NULL ptr check."
        }
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              "value": "AV:N - Soft-RoCE (UDP/4791) backs network RDMA servers such as ksmbd SMB Direct and nvmet-rdma; on RDMA_CM CONNECT_REQUEST those ULPs create an IB_QPT_RC QP through rxe_create_qp, so a remote peer drives the vulnerable create/cleanup path.\nAC:L - A remote peer can open many Soft-RoCE RC connections until sock_create_kern fails (ENFILE/ENOMEM), then the next create hits rxe_qp_do_cleanup with qp-\u003esk == NULL and oopses deterministically; both exhaustion and the failing create are attacker-controlled.\nPR:N - QP creation for ksmbd smbdirect and nvmet-rdma occurs on RDMA_CM CONNECT_REQUEST before any ULP authentication, so an unauthenticated network peer reaches the bug.\nUI:N - Exploitation needs only attacker-initiated RDMA CM connections (or local uverbs create_qp); no victim mount, click, or other interaction is required.\nS:U - The NULL dereference crashes the host kernel within the same security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:N - The fault is a pure NULL-pointer read (sk_dst_reset(qp-\u003esk-\u003esk) with qp-\u003esk == NULL, KASAN address 0x18) with no UAF, OOB read, or other disclosure primitive.\nI:N - No memory is written or corrupted before the oops; there is no arbitrary write, type confusion, or control-flow hijack path from this bug alone.\nA:H - The NULL dereference produces a kernel oops/panic on the create-failure cleanup path and can be re-triggered by further connection attempts after resource exhaustion."
            }
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        {
          "url": "https://git.kernel.org/stable/c/f67376d801499f4fa0838c18c1efcad8840e550d"
        }
      ],
      "title": "RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed",
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    "cveId": "CVE-2022-50885",
    "datePublished": "2025-12-30T12:34:12.093Z",
    "dateReserved": "2025-12-30T12:26:05.425Z",
    "dateUpdated": "2026-08-05T08:59:57.434Z",
    "state": "PUBLISHED"
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      "date": "2026-09-17",
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      "percentile": "0.46577"
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed\n\nThere is a null-ptr-deref when mount.cifs over rdma:\n\n  BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]\n  Read of size 8 at addr 0000000000000018 by task mount.cifs/3046\n\n  CPU: 2 PID: 3046 Comm: mount.cifs Not tainted 6.1.0-rc5+ #62\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc3\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x34/0x44\n   kasan_report+0xad/0x130\n   rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]\n   execute_in_process_context+0x25/0x90\n   __rxe_cleanup+0x101/0x1d0 [rdma_rxe]\n   rxe_create_qp+0x16a/0x180 [rdma_rxe]\n   create_qp.part.0+0x27d/0x340\n   ib_create_qp_kernel+0x73/0x160\n   rdma_create_qp+0x100/0x230\n   _smbd_get_connection+0x752/0x20f0\n   smbd_get_connection+0x21/0x40\n   cifs_get_tcp_session+0x8ef/0xda0\n   mount_get_conns+0x60/0x750\n   cifs_mount+0x103/0xd00\n   cifs_smb3_do_mount+0x1dd/0xcb0\n   smb3_get_tree+0x1d5/0x300\n   vfs_get_tree+0x41/0xf0\n   path_mount+0x9b3/0xdd0\n   __x64_sys_mount+0x190/0x1d0\n   do_syscall_64+0x35/0x80\n   entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe root cause of the issue is the socket create failed in\nrxe_qp_init_req().\n\nSo move the reset rxe_qp_do_cleanup() after the NULL ptr check."
          }
        ],
        "id": "CVE-2022-50885",
        "lastModified": "2026-08-04T10:18:25.417",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2025-12-30T13:16:03.603",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/5b924632d84a60bc0c7fe6e9bbbce99d03908957"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6bb5a62bfd624039b05157745c234068508393a9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7340ca9f782be6fbe3f64a134dc112772764f766"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/821f9a18210f6b9fd6792471714c799607b25db4"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/bd7106a6004f1077a365ca7f5a99c7a708e20714"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ee24de095569935eba600f7735e8e8ddea5b418e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f64f08b9e6fb305a25dd75329e06ae342b9ce336"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f67376d801499f4fa0838c18c1efcad8840e550d"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:35:20+00:00",
      "cve": "CVE-2022-50885",
      "id": "CVE-2022-50885",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service in RDMA/rxe due to null-pointer dereference",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50885.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:18:04Z",
      "cve": "CVE-2022-50885",
      "id": "CVE-2022-50885",
      "initial_release_date": "2025-12-31T00:30:31Z",
      "product_status:known_affected": "357",
      "product_status:known_not_affected": "369",
      "product_status:recommended": "262",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50885",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50885.json",
      "version": "35"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.