CVE-2026-31405

Advisory lineage Upstream: 0 Downstream: 5
Analyzed
Published: 06 Apr 2026, 07:33
Last modified:11 May 2026, 22:08

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (cve.org)
EPSS Score
0.55% LOW
1% probability +0.48%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

06 Apr 2026, 07:33
Published
Vulnerability first disclosed
11 May 2026, 22:08
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.55%• Percentile: 41%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • linux•linux

    ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e51238718217c4abdb3ccc3b0c0cde265c7ec629 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b2bd2ee73b697c177157bba534e1b1064c2e66a0 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 29ef43ceb121d67b87f4cbb08439e4e9e732eff8 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 1a6da3dbb9985d00743073a1cc1f96e59f5abc30 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 145e50c2c700fa52b840df7bab206043997dd18e | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8bde543d2a5f935ba2a6a6325a2e02f8a9256fbe | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f2b65dcb78c8990e4c68a906627433be1fe38a92 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 24d87712727a5017ad142d63940589a36cd25647 | 2.6.12

  • linux•linux_kernel

    ≥ 2.6.12.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.167 | ≥ 6.2, < 6.6.130 | ≥ 6.7, < 6.12.78 | ≥ 6.13, < 6.18.19 | ≥ 6.19, < 6.19.9 | 2.6.12 | 2.6.12:rc2 | 2.6.12:rc3 | 2.6.12:rc4 | 2.6.12:rc5 | 7.0:rc1 | 7.0:rc2

References (8)