CVE-2026-23456HIGH 8.2EPSS p35.2%
CVE-2026-23456CVE-2026-23456
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().
Scoring
| CVSS 3.1 | 8.2 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
| EPSS | 0.44% probability of exploitation · percentile 35.2% · 2026-06-18T12:00:27Z |
| Published | 2026-04-03 |
| Last modified | 2026-05-26 |
Underlying weaknesses· 1
References
- https://git.kernel.org/stable/c/1e3a3593162c96e8a8de48b1e14f60c3b57fca8a
- https://git.kernel.org/stable/c/41b417ff73a24b2c68134992cc44c88db27f482d
- https://git.kernel.org/stable/c/52235bf88159a1ef16434ab49e47e99c8a09ab20
- https://git.kernel.org/stable/c/6bce72daeccca9aa1746e92d6c3d4784e71f2ebb
- https://git.kernel.org/stable/c/774a434f8c9c8602a976b2536f65d0172a07f4d2
- https://git.kernel.org/stable/c/a2cd54b9348e485d338b3c132338a4410c99afaf
- https://git.kernel.org/stable/c/c95dc674ebf01ecfb40388b6facfc89b81fed3b7
- https://git.kernel.org/stable/c/fb6c3596823ec5dd09c2123340330d7448f51a59
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Out-of-bounds Readcwe-125 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.