Medium 5.5Published May 8, 2026

CVE-2026-43457mctp: i2c: fix skb memory leak in receive path

Updated under an hour ago (Oct 27, 2026, 9:50 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: mctp: i2c: fix skb memory leak in receive path When 'midev->allow_rx' is false, the newly allocated skb isn't consumed by netif_rx(), it needs to free the skb directly.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from f5b8abf9fc3dacd7529d363e26fe8230935d65f8 before 0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb; from f5b8abf9fc3dacd7529d363e26fe8230935d65f8 before d7900a43b0a314a645ca0a2adf45928dbc7001f4; from f5b8abf9fc3dacd7529d363e26fe8230935d65f8 before 9f81be2ab9d8e4744871bfb3e868ef413413829f; from f5b8abf9fc3dacd7529d363e26fe8230935d65f8 before 1ec54187e1aa40a4cfa2b265e9a311179f24b98d; from f5b8abf9fc3dacd7529d363e26fe8230935d65f8 before 1b1be322342a6b0085bf6ee52235e5ac9834ec25; from f5b8abf9fc3dacd7529d363e26fe8230935d65f8 before e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69	CNA record
linux linux_kernel linux:linux_kernel	from 5.18 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.78; from 6.13 before 6.18.19; from 6.19 before 6.19.9; 7.0; 7.0; 7.0	NVD

References

References

https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb	patch
https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4	patch
https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f	patch
https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d	patch
https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25	patch
https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.