CVE-2026-99245
KEYS: Fix key_reject_and_link() race with keyring restriction
Description
In the Linux kernel, the following vulnerability has been resolved: KEYS: Fix key_reject_and_link() race with keyring restriction The restrict_link check in key_reject_and_link() is done before taking the keyring semaphore, racing with a concurrent keyring_restrict() that installs the restriction while holding the semaphore in write mode. Move the check to after __key_link_lock(), so it is done under the semaphore, matching the pattern used in __key_create_or_update().
INFO
Published Date :
Nov. 3, 2026, 12:17 p.m.
Last Modified :
Nov. 3, 2026, 12:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-99245
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
- Apply the resolved kernel patch.
- Ensure kernel is updated to the fixed version.
- Reboot the system after applying updates.
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-2026-99245.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-99245 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-2026-99245
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-2026-99245 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-99245 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
Nov. 03, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: KEYS: Fix key_reject_and_link() race with keyring restriction The restrict_link check in key_reject_and_link() is done before taking the keyring semaphore, racing with a concurrent keyring_restrict() that installs the restriction while holding the semaphore in write mode. Move the check to after __key_link_lock(), so it is done under the semaphore, matching the pattern used in __key_create_or_update(). Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/99xxx/CVE-2026-99245.json">CVE-2026-99245</a> Added Reference https://git.kernel.org/stable/c/01835d3a3709be508ae5209f806640336c48e395 Added Reference https://git.kernel.org/stable/c/19dfc37c9deefa69dc805d01d35d1f2fd7902e33 Added Reference https://git.kernel.org/stable/c/23a9163cc40b4996ba1e20533b1210a1a0bee416 Added Reference https://git.kernel.org/stable/c/2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f Added Reference https://git.kernel.org/stable/c/5787887eba0f0979a8c86d03a8e891395d5c24ad Added Reference https://git.kernel.org/stable/c/6fc0c818b1cac66003e937c8a0d3bfb23fd3f130 Added Reference https://git.kernel.org/stable/c/72f367417a6aee56821d0b0114cfd2b080008b63 Added Reference https://git.kernel.org/stable/c/c7956ec99ad0e173720d95de9fa788bb077809f2