CVE-2026-31405
CRITICALmedia: dvb-net: fix OOB access in ULE extension header tables
Title source: cnaDescription
In the Linux kernel, the following vulnerability has been resolved: media: dvb-net: fix OOB access in ULE extension header tables The ule_mandatory_ext_handlers[] and ule_optional_ext_handlers[] tables in handle_one_ule_extension() are declared with 255 elements (valid indices 0-254), but the index htype is derived from network-controlled data as (ule_sndu_type & 0x00FF), giving a range of 0-255. When htype equals 255, an out-of-bounds read occurs on the function pointer table, and the OOB value may be called as a function pointer. Add a bounds check on htype against the array size before either table is accessed. Out-of-range values now cause the SNDU to be discarded.
References (8)
Core 8
Core References
Scores
CVSS v3
9.8
EPSS
0.0055
EPSS Percentile
42.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-125
Status
published
Products (29)
linux/Kernel
2.6.12 - 5.10.253linux
linux/Kernel
5.11.0 - 5.15.203linux
linux/Kernel
5.16.0 - 6.1.167linux
linux/Kernel
6.13.0 - 6.18.19linux
linux/Kernel
6.19.0 - 6.19.9linux
linux/Kernel
6.2.0 - 6.6.130linux
linux/Kernel
6.7.0 - 6.12.78linux
Linux/Linux
< 2.6.12
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 145e50c2c700fa52b840df7bab206043997dd18e
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 1a6da3dbb9985d00743073a1cc1f96e59f5abc30
... and 19 more
Published
Apr 06, 2026
Tracked Since
Apr 06, 2026