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cve416baaa9-dc9f-4396-8d5f-8c081fb06d67CVE-2021-47453
HistoryMay 22, 2024 - 7:15 a.m.

CVE-2021-47453

2024-05-2207:15:10
416baaa9-dc9f-4396-8d5f-8c081fb06d67
web.nvd.nist.gov
31
linux kernel
vulnerability
ida

6.7 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.0%

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

ice: Avoid crash from unnecessary IDA free

In the remove path, there is an attempt to free the aux_idx IDA whether
it was allocated or not. This can potentially cause a crash when
unloading the driver on systems that do not initialize support for RDMA.
But, this free cannot be gated by the status bit for RDMA, since it is
allocated if the driver detects support for RDMA at probe time, but the
driver can enter into a state where RDMA is not supported after the IDA
has been allocated at probe time and this would lead to a memory leak.

Initialize aux_idx to an invalid value and check for a valid value when
unloading to determine if an IDA free is necessary.

Affected configurations

Vulners
Node
linuxlinux_kernelRange5.145.14.15
OR
linuxlinux_kernelRange5.15.0

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/intel/ice/ice_main.c"
    ],
    "versions": [
      {
        "version": "d25a0fc41c1f",
        "lessThan": "777682e59840",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d25a0fc41c1f",
        "lessThan": "73e30a62b19b",
        "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/net/ethernet/intel/ice/ice_main.c"
    ],
    "versions": [
      {
        "version": "5.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.14",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.14.15",
        "lessThanOrEqual": "5.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

6.7 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.0%