CVE-2024-46834 ethtool: fail closed if we can't get max channel used in indirection tables

2024-09-2712:39:31

Linux

www.cve.org

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

ethtool: fail closed if we can’t get max channel used in indirection tables

Commit 0d1b7d6c9274 (“bnxt: fix crashes when reducing ring count with
active RSS contexts”) proves that allowing indirection table to contain
channels with out of bounds IDs may lead to crashes. Currently the
max channel check in the core gets skipped if driver can’t fetch
the indirection table or when we can’t allocate memory.

Both of those conditions should be extremely rare but if they do
happen we should try to be safe and fail the channel change.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ethtool/channels.c",
      "net/ethtool/common.c",
      "net/ethtool/common.h",
      "net/ethtool/ioctl.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f4",
        "lessThan": "101737d8b88d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "2899d58462ba",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ethtool/channels.c",
      "net/ethtool/common.c",
      "net/ethtool/common.h",
      "net/ethtool/ioctl.c"
    ],
    "versions": [
      {
        "version": "6.10.10",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

References

git.kernel.org/stable/c/101737d8b88dbd4be6010bac398fe810f1950036

git.kernel.org/stable/c/2899d58462ba868287d6ff3acad3675e7adf934f

JSON

Related for CVELIST:CVE-2024-46834