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
0.0004
EPSS Percentile
13.1%
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 (22)
Linux/Linux
< 2.6.12
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 145e50c2c700fa52b840df7bab206043997dd18e
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 1a6da3dbb9985d00743073a1cc1f96e59f5abc30
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 24d87712727a5017ad142d63940589a36cd25647
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 29ef43ceb121d67b87f4cbb08439e4e9e732eff8
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 8bde543d2a5f935ba2a6a6325a2e02f8a9256fbe
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - b2bd2ee73b697c177157bba534e1b1064c2e66a0
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - e51238718217c4abdb3ccc3b0c0cde265c7ec629
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - f2b65dcb78c8990e4c68a906627433be1fe38a92
Linux/Linux
2.6.12
... and 12 more
Published
Apr 06, 2026
Tracked Since
Apr 06, 2026