Vulnerability in Linux

CVE-2023-53705

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix out-of-bounds access in ipv6_find_tlv() optlen is fetched without checking whether there is more than one byte to parse. It can lead to out-of-bounds access. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (44.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-53705: held from 0.005 to 0.006.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000

Affected products

  • Linux — versions c61a404325093250b676f40ad8f4dd00f3bcab5f, 2.6.19, 0

References

Frequently asked questions

What is CVE-2023-53705?
CVE-2023-53705 is a high-severity vulnerability in Linux. CVSS score: 8.2/10. Published 2025-10-22.
How severe is CVE-2023-53705?
High severity. CVSS v3 base score is 8.2 out of 10.