CVE-2026-31405
CRITICAL
9.8
CVSS 3.1
Description
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.
Metadata
Severity & Metrics
9.8
CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e51238718217c4abdb3ccc3b0c0cde265c7ec629, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b2bd2ee73b697c177157bba534e1b1064c2e66a0, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 29ef43ceb121d67b87f4cbb08439e4e9e732eff8, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1a6da3dbb9985d00743073a1cc1f96e59f5abc30 … |
| Linux | Linux | — | 2.6.12, 0 < 2.6.12, 5.10.253 ≤ 5.10.*, 5.15.203 ≤ 5.15.* … |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 9.8 | CRITICAL | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References (8)
- https://git.kernel.org/stable/c/e51238718217c4abdb3ccc3b0c0cde265c7ec629
- https://git.kernel.org/stable/c/b2bd2ee73b697c177157bba534e1b1064c2e66a0
- https://git.kernel.org/stable/c/29ef43ceb121d67b87f4cbb08439e4e9e732eff8
- https://git.kernel.org/stable/c/1a6da3dbb9985d00743073a1cc1f96e59f5abc30
- https://git.kernel.org/stable/c/145e50c2c700fa52b840df7bab206043997dd18e
- https://git.kernel.org/stable/c/8bde543d2a5f935ba2a6a6325a2e02f8a9256fbe
- https://git.kernel.org/stable/c/f2b65dcb78c8990e4c68a906627433be1fe38a92
- https://git.kernel.org/stable/c/24d87712727a5017ad142d63940589a36cd25647