CVE-2026-23456 — Out-of-bounds Read in Linux
Severity
6.4MEDIUM
No vectorEPSS
0.0%
top 90.94%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 3
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…
Affected Packages3 packages
▶CVEListV5linux/linux5e35941d990123f155b02d5663e51a24f816b6f3 — 41b417ff73a24b2c68134992cc44c88db27f482d+6
🔴Vulnerability Details
2OSV▶
CVE-2026-23456: 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↗2026-04-03
GHSA▶
GHSA-qgh9-fcm6-v6pg: In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_conntrack_h323: fix OOB read in decode_int() CONS case
In decode_i↗2026-04-03