CVE-2025-22108 (GCVE-0-2025-22108)

Vulnerability from cvelistv5 – Published: 2025-04-16 14:12 – Updated: 2026-05-11 21:13
VLAI
Title
bnxt_en: Mask the bd_cnt field in the TX BD properly
Summary
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Mask the bd_cnt field in the TX BD properly The bd_cnt field in the TX BD specifies the total number of BDs for the TX packet. The bd_cnt field has 5 bits and the maximum number supported is 32 with the value 0. CONFIG_MAX_SKB_FRAGS can be modified and the total number of SKB fragments can approach or exceed the maximum supported by the chip. Add a macro to properly mask the bd_cnt field so that the value 32 will be properly masked and set to 0 in the bd_cnd field. Without this patch, the out-of-range bd_cnt value will corrupt the TX BD and may cause TX timeout. The next patch will check for values exceeding 32.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3948b05950fdd64002a5f182c65ba5cf2d53cf71 , < f60b41b815826f15c4d0323f923f398c423178d0 (git)
Affected: 3948b05950fdd64002a5f182c65ba5cf2d53cf71 , < 107b25db61122d8f990987895c2912927b8b6e3f (git)
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Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.14.2 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "drivers/net/ethernet/broadcom/bnxt/bnxt.c",
            "drivers/net/ethernet/broadcom/bnxt/bnxt.h",
            "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"
          ],
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Mask the bd_cnt field in the TX BD properly\n\nThe bd_cnt field in the TX BD specifies the total number of BDs for\nthe TX packet.  The bd_cnt field has 5 bits and the maximum number\nsupported is 32 with the value 0.\n\nCONFIG_MAX_SKB_FRAGS can be modified and the total number of SKB\nfragments can approach or exceed the maximum supported by the chip.\nAdd a macro to properly mask the bd_cnt field so that the value 32\nwill be properly masked and set to 0 in the bd_cnd field.\n\nWithout this patch, the out-of-range bd_cnt value will corrupt the\nTX BD and may cause TX timeout.\n\nThe next patch will check for values exceeding 32."
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:13:07.457Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "bnxt_en: Mask the bd_cnt field in the TX BD properly",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-22108",
    "datePublished": "2025-04-16T14:12:55.737Z",
    "dateReserved": "2024-12-29T08:45:45.820Z",
    "dateUpdated": "2026-05-11T21:13:07.457Z",
    "state": "PUBLISHED"
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  }
}


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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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