Critical 9.8Published Apr 6, 2026

CVE-2026-31405media: dvb-net: fix OOB access in ULE extension header tables

Updated under an hour ago (Oct 27, 2026, 7:00 AM ET)

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Exploited in the last 30 days

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: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e51238718217c4abdb3ccc3b0c0cde265c7ec629; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b2bd2ee73b697c177157bba534e1b1064c2e66a0; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 29ef43ceb121d67b87f4cbb08439e4e9e732eff8; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 builds before 1a6da3dbb9985d00743073a1cc1f96e59f5abc30; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 145e50c2c700fa52b840df7bab206043997dd18e; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8bde543d2a5f935ba2a6a6325a2e02f8a9256fbe; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f2b65dcb78c8990e4c68a906627433be1fe38a92; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 24d87712727a5017ad142d63940589a36cd25647	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.12.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.78; from 6.13 before 6.18.19; from 6.19 before 6.19.9; 2.6.12; and 6 more ranges	NVD

References

References

https://git.kernel.org/stable/c/e51238718217c4abdb3ccc3b0c0cde265c7ec629	patch
https://git.kernel.org/stable/c/b2bd2ee73b697c177157bba534e1b1064c2e66a0	patch
https://git.kernel.org/stable/c/29ef43ceb121d67b87f4cbb08439e4e9e732eff8	patch
https://git.kernel.org/stable/c/1a6da3dbb9985d00743073a1cc1f96e59f5abc30	patch
https://git.kernel.org/stable/c/145e50c2c700fa52b840df7bab206043997dd18e	patch
https://git.kernel.org/stable/c/8bde543d2a5f935ba2a6a6325a2e02f8a9256fbe	patch
https://git.kernel.org/stable/c/f2b65dcb78c8990e4c68a906627433be1fe38a92	patch
https://git.kernel.org/stable/c/24d87712727a5017ad142d63940589a36cd25647	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.