CVE-2021-47265

2024-05-2115:15:15

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

linux kernel

vulnerability

validating port

preventing oops

rdma

mlx5_ib driver

flow rule

6.7 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

RDMA: Verify port when creating flow rule

Validate port value provided by the user and with that remove no longer
needed validation by the driver. The missing check in the mlx5_ib driver
could cause to the below oops.

Call trace:
_create_flow_rule+0x2d4/0xf28 [mlx5_ib]
mlx5_ib_create_flow+0x2d0/0x5b0 [mlx5_ib]
ib_uverbs_ex_create_flow+0x4cc/0x624 [ib_uverbs]
ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0xd4/0x150 [ib_uverbs]
ib_uverbs_cmd_verbs.isra.7+0xb28/0xc50 [ib_uverbs]
ib_uverbs_ioctl+0x158/0x1d0 [ib_uverbs]
do_vfs_ioctl+0xd0/0xaf0
ksys_ioctl+0x84/0xb4
__arm64_sys_ioctl+0x28/0xc4
el0_svc_common.constprop.3+0xa4/0x254
el0_svc_handler+0x84/0xa0
el0_svc+0x10/0x26c
Code: b9401260 f9615681 51000400 8b001c20 (f9403c1a)

Affected configurations

Vulners

Node

linuxlinux_kernelRange3.12–5.12.11

linuxlinux_kernelRange5.13.0≥

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/infiniband/core/uverbs_cmd.c",
      "drivers/infiniband/hw/mlx4/main.c",
      "drivers/infiniband/hw/mlx5/fs.c"
    ],
    "versions": [
      {
        "version": "436f2ad05a0b",
        "lessThan": "8dc1b0e0ca20",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "436f2ad05a0b",
        "lessThan": "2adcb4c5a52a",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/infiniband/core/uverbs_cmd.c",
      "drivers/infiniband/hw/mlx4/main.c",
      "drivers/infiniband/hw/mlx5/fs.c"
    ],
    "versions": [
      {
        "version": "3.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.12",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.12.11",
        "lessThanOrEqual": "5.12.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.13",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]