Is CVE-2023-53817 in the CISA KEV catalog?

No. CVE-2023-53817 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2023-53817?

CVE-2023-53817 has an EPSS score of 0.20% (10th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-53817?

Upgrade linux on debian 11 to 5.10.197-1 or later.

CVE & CISA-KEV Catalog

CVE-2023-53817

UNSCORED

NVD

Description

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()

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.197-1CVE-2023-53817

Fixed in:6.1.55-1CVE-2023-53817

Fixed in:6.5.6-1CVE-2023-53817

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.20%probability of exploitation in 30 days

10thpercentile

Low risk: more likely to be exploited than 10% of all known CVEs.

References

Other references8

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-09.