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Vulnerability record · CVE-2026-43373 · published 8 May 2026

CVE-2026-43373: Linux kernel memory leak vulnerability

Linux · Linux Kernel

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.

7.5 CVSS 3.1 High EPSS 0.72% · top 48.1% CWE-401 · Memory leak
7.5CVSS 3.1 base score
0.72%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/553366c271479c0d571dd1bb5d1bcde4747fb82e Patch
https://git.kernel.org/stable/c/59962588197863d0d746879f193905c0c6b3df49 Patch
https://git.kernel.org/stable/c/5c3398a54266541610c8d0a7082e654e9ff3e259 Patch
https://git.kernel.org/stable/c/81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a Patch
https://git.kernel.org/stable/c/87138dde2d6937b12b967f28fe598a7d59000ae4 Patch
https://git.kernel.org/stable/c/9891d7f4f1ede473c54b49776ae07755083eef06 Patch
https://git.kernel.org/stable/c/b70c4e5e711931cdd56e6e905737b72f1e649189 Patch
https://git.kernel.org/stable/c/fef5aa6e3bcf3c8053307642663a63b7362d7552 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43373), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.