CVE-2023-53817
crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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()
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 9, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < fde791e8a96a64ea7b0ad2440e43586447a209c6 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < ae63e84ffda74267bf7277c38415ba38389229a0 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 61f5453e9706e99713825594e0c8f9031485fb5f 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 0fc7147c694394f8a8cbc19570c6bc918cac0906 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 67589d247909043e94d2dd5fb590958e0f99d58d 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < d3ad023a39f1127dcfd331c562673355dc078650 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 12ac013ad7ff0df066451e825801d805095b3776 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 9e47a758b70167c9301d2b44d2569f86c7796f2d
Linux / Linux
3.7
References
git.kernel.org: https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6 git.kernel.org: https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0 git.kernel.org: https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f git.kernel.org: https://git.kernel.org/stable/c/0fc7147c694394f8a8cbc19570c6bc918cac0906 git.kernel.org: https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d git.kernel.org: https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650 git.kernel.org: https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776 git.kernel.org: https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d