CVE-2026-43373
net: ncsi: fix skb leak in error paths
Description
In the Linux kernel, the following vulnerability has been resolved: net: ncsi: fix skb leak in error paths Early return paths in NCSI RX and AEN handlers fail to release the received skb, resulting in a memory leak. Specifically, ncsi_aen_handler() returns on invalid AEN packets without consuming the skb. Similarly, ncsi_rcv_rsp() exits early when failing to resolve the NCSI device, response handler, or request, leaving the skb unfreed.
INFO
Published Date :
May 8, 2026, 3:16 p.m.
Last Modified :
May 8, 2026, 3:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the kernel patch for net: ncsi: fix skb leak.
- Update the Linux kernel to the resolved version.
- Ensure proper skb handling in NCSI error paths.
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-2026-43373.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43373 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-2026-43373
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-2026-43373 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-43373 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
May. 08, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net: ncsi: fix skb leak in error paths Early return paths in NCSI RX and AEN handlers fail to release the received skb, resulting in a memory leak. Specifically, ncsi_aen_handler() returns on invalid AEN packets without consuming the skb. Similarly, ncsi_rcv_rsp() exits early when failing to resolve the NCSI device, response handler, or request, leaving the skb unfreed. Added Reference https://git.kernel.org/stable/c/553366c271479c0d571dd1bb5d1bcde4747fb82e Added Reference https://git.kernel.org/stable/c/59962588197863d0d746879f193905c0c6b3df49 Added Reference https://git.kernel.org/stable/c/5c3398a54266541610c8d0a7082e654e9ff3e259 Added Reference https://git.kernel.org/stable/c/81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a Added Reference https://git.kernel.org/stable/c/87138dde2d6937b12b967f28fe598a7d59000ae4 Added Reference https://git.kernel.org/stable/c/9891d7f4f1ede473c54b49776ae07755083eef06 Added Reference https://git.kernel.org/stable/c/b70c4e5e711931cdd56e6e905737b72f1e649189 Added Reference https://git.kernel.org/stable/c/fef5aa6e3bcf3c8053307642663a63b7362d7552