CVE-2023-53817 (GCVE-0-2023-53817)

Vulnerability from cvelistv5 – Published: 2025-12-09 00:01 – Updated: 2025-12-09 00:01
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui() During NVMeTCP Authentication a controller can trigger a kernel oops by specifying the 8192 bit Diffie Hellman group and passing a correctly sized, but zeroed Diffie Hellamn value. mpi_cmp_ui() was detecting this if the second parameter was 0, but 1 is passed from dh_is_pubkey_valid(). This causes the null pointer u->d to be dereferenced towards the end of mpi_cmp_ui()
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fde791e8a96a64ea7b0ad2440e43586447a209c6 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ae63e84ffda74267bf7277c38415ba38389229a0 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 61f5453e9706e99713825594e0c8f9031485fb5f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0fc7147c694394f8a8cbc19570c6bc918cac0906 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 67589d247909043e94d2dd5fb590958e0f99d58d (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d3ad023a39f1127dcfd331c562673355dc078650 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 12ac013ad7ff0df066451e825801d805095b3776 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9e47a758b70167c9301d2b44d2569f86c7796f2d (git)
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    Linux Linux Unaffected: 4.14.326 , ≤ 4.14.* (semver)
Unaffected: 4.19.295 , ≤ 4.19.* (semver)
Unaffected: 5.4.257 , ≤ 5.4.* (semver)
Unaffected: 5.10.197 , ≤ 5.10.* (semver)
Unaffected: 5.15.133 , ≤ 5.15.* (semver)
Unaffected: 6.1.55 , ≤ 6.1.* (semver)
Unaffected: 6.5.5 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "lib/crypto/mpi/mpi-cmp.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()\n\nDuring NVMeTCP Authentication a controller can trigger a kernel\noops by specifying the 8192 bit Diffie Hellman group and passing\na correctly sized, but zeroed Diffie Hellamn value.\nmpi_cmp_ui() was detecting this if the second parameter was 0,\nbut 1 is passed from dh_is_pubkey_valid(). This causes the null\npointer u-\u003ed to be dereferenced towards the end of mpi_cmp_ui()"
        }
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      "providerMetadata": {
        "dateUpdated": "2025-12-09T00:01:15.411Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "dateReserved": "2025-12-08T23:58:35.277Z",
    "dateUpdated": "2025-12-09T00:01:15.411Z",
    "state": "PUBLISHED"
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}


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  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.