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CVE-2026-23456

nvd nist
Published: Apr 3, 2026Modified: Oct 19, 2026

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8.2
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Exploitability: 3.9 / Impact: 4.2
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: fix OOB read in decode_int() CONS case In decode_int(), the CONS case calls get_bits(bs, 2) to read a length value, then calls get_uint(bs, len) without checking that len bytes remain in the buffer. The existing boundary check only validates the 2 bits for get_bits(), not the subsequent 1-4 bytes that get_uint() reads. This allows a malformed H.323/RAS packet to cause a 1-4 byte slab-out-of-bounds read. Add a boundary check for len bytes after get_bits() and before get_uint().

Affected (11)

Products: Linux: Linux Kernel
1 product
Linux Kernel
Configuration A
11 vulnerable
Vulnerable SoftwareAffected Versions
Linux
2.6.17 ≤ version < 5.10.253
5.11 ≤ version < 5.15.203
5.16 ≤ version < 6.1.167
6.13 ≤ version < 6.18.20
6.19 ≤ version < 6.19.10
6.2 ≤ version < 6.6.130
6.7 ≤ version < 6.12.78
Version 7.0 rc1
Version 7.0 rc2
Version 7.0 rc3
Version 7.0 rc4

References (11)

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

Timeline

No history available yet.