CVE-2025-21808 (GCVE-0-2025-21808)

Vulnerability from cvelistv5 – Published: 2025-02-27 20:01 – Updated: 2025-05-04 07:21
VLAI?
Title
net: xdp: Disallow attaching device-bound programs in generic mode
Summary
In the Linux kernel, the following vulnerability has been resolved: net: xdp: Disallow attaching device-bound programs in generic mode Device-bound programs are used to support RX metadata kfuncs. These kfuncs are driver-specific and rely on the driver context to read the metadata. This means they can't work in generic XDP mode. However, there is no check to disallow such programs from being attached in generic mode, in which case the metadata kfuncs will be called in an invalid context, leading to crashes. Fix this by adding a check to disallow attaching device-bound programs in generic mode.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 , < b1bc4a35a04cbeb85b6ef5911ec015baa424989f (git)
Affected: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 , < 557707906dd3e34b8a8c265f664d19f95799937e (git)
Affected: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 , < 5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1 (git)
Affected: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 , < 3595599fa8360bb3c7afa7ee50c810b4a64106ea (git)
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    Linux Linux Affected: 6.3
Unaffected: 0 , < 6.3 (semver)
Unaffected: 6.6.76 , ≤ 6.6.* (semver)
Unaffected: 6.12.13 , ≤ 6.12.* (semver)
Unaffected: 6.13.2 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: xdp: Disallow attaching device-bound programs in generic mode\n\nDevice-bound programs are used to support RX metadata kfuncs. These\nkfuncs are driver-specific and rely on the driver context to read the\nmetadata. This means they can\u0027t work in generic XDP mode. However, there\nis no check to disallow such programs from being attached in generic\nmode, in which case the metadata kfuncs will be called in an invalid\ncontext, leading to crashes.\n\nFix this by adding a check to disallow attaching device-bound programs\nin generic mode."
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    "datePublished": "2025-02-27T20:01:00.328Z",
    "dateReserved": "2024-12-29T08:45:45.772Z",
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    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1"
}


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Detection rules are retrieved from Rulezet.