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CVE-2026-23083

nvd nist
Published: Feb 4, 2026Modified: Oct 19, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

Description

In the Linux kernel, the following vulnerability has been resolved: fou: Don't allow 0 for FOU_ATTR_IPPROTO. fou_udp_recv() has the same problem mentioned in the previous patch. If FOU_ATTR_IPPROTO is set to 0, skb is not freed by fou_udp_recv() nor "resubmit"-ted in ip_protocol_deliver_rcu(). Let's forbid 0 for FOU_ATTR_IPPROTO.

Affected (12)

Products: Linux: Linux Kernel
Linux
1 product
Linux Kernel
Configuration A
12 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
3.18 ≤ version < 5.10.249
Linux Kernel
5.11 ≤ version < 5.15.199
Linux Kernel
5.16 ≤ version < 6.1.162
Linux Kernel
6.13 ≤ version < 6.18.8
Linux Kernel
6.2 ≤ version < 6.6.122
Linux Kernel
6.7 ≤ version < 6.12.68
Linux Kernel
Version 6.19 rc1
Linux Kernel
Version 6.19 rc2
Linux Kernel
Version 6.19 rc3
Linux Kernel
Version 6.19 rc4
Linux Kernel
Version 6.19 rc5
Linux Kernel
Version 6.19 rc6

Related CWEs

CWE-20
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

References (9)

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

Timeline

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