What’s Vulnerable › Vulnerabilities

CVE-2026-72041: espintcp: use sk_msg_free_partial to fix partial send

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-10-19
• Weakness: CWE-664

Description

In the Linux kernel, the following vulnerability has been resolved: espintcp: use sk_msg_free_partial to fix partial send sk_msg_free_partial() ensures consistency of the skmsg at every iteration, without having to manually handle uncharges and offsets. This simplifies the code, and fixes some bugs in skmsg accounting when we don't send the full contents.

Affected products

• Linux kernel: 5.6 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/007800408002d871f5699bdb944f985896730b8f
• https://git.kernel.org/stable/c/14c0b42c8a2cd9b5361bbff45b52f69c62c6a286
• https://git.kernel.org/stable/c/4ea8c051b4bd7feec7749a980f2f70e1782b84d7
• https://git.kernel.org/stable/c/518dcb84b997dff461800b079e5f2596389f766a
• https://git.kernel.org/stable/c/54d73f18f8919735f4d04d6f43374f75756c0180
• https://git.kernel.org/stable/c/a338ce41bc933d8f74c39d9b3b6f1d8ca53d9714
• https://git.kernel.org/stable/c/a66d45e0ce6d73cd79962d422388e61bfaf0cb50
• https://git.kernel.org/stable/c/a977f78adce40b39d90d9567e7987bb110102810

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