CVE-2026-23364
ksmbd: Compare MACs in constant time
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Compare MACs in constant time To prevent timing attacks, MAC comparisons need to be constant-time. Replace the memcmp() with the correct function, crypto_memneq().
INFO
Published Date :
March 25, 2026, 11:16 a.m.
Last Modified :
March 25, 2026, 11:16 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-23364
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Replace memcmp() with crypto_memneq() in ksmbd.
- Apply the kernel patch for constant-time MAC comparison.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23364.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23364 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23364
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23364 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23364 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 25, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ksmbd: Compare MACs in constant time To prevent timing attacks, MAC comparisons need to be constant-time. Replace the memcmp() with the correct function, crypto_memneq(). Added Reference https://git.kernel.org/stable/c/2cdc56ed67615ba0921383a688f24415ebe065f3 Added Reference https://git.kernel.org/stable/c/307afccb751f542246bd5dc68a2c1ffe1a78418c Added Reference https://git.kernel.org/stable/c/93c0a22fec914ec4b697e464895a0f594e29fb28 Added Reference https://git.kernel.org/stable/c/c5794709bc9105935dbedef8b9cf9c06f2b559fa Added Reference https://git.kernel.org/stable/c/cd52a0e309659537048a864211abc3ea4c5caa63 Added Reference https://git.kernel.org/stable/c/f4588b85efd6007d46b80aa1b9fb746628ffb3dc