{"id":"CVE-2026-31405","summary":"media: dvb-net: fix OOB access in ULE extension header tables","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-net: fix OOB access in ULE extension header tables\n\nThe ule_mandatory_ext_handlers[] and ule_optional_ext_handlers[] tables\nin handle_one_ule_extension() are declared with 255 elements (valid\nindices 0-254), but the index htype is derived from network-controlled\ndata as (ule_sndu_type & 0x00FF), giving a range of 0-255. When\nhtype equals 255, an out-of-bounds read occurs on the function pointer\ntable, and the OOB value may be called as a function pointer.\n\nAdd a bounds check on htype against the array size before either table\nis accessed. Out-of-range values now cause the SNDU to be discarded.","modified":"2026-04-14T03:48:22.991774Z","published":"2026-04-06T07:33:00.544Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31405.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/145e50c2c700fa52b840df7bab206043997dd18e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1a6da3dbb9985d00743073a1cc1f96e59f5abc30"},{"type":"WEB","url":"https://git.kernel.org/stable/c/24d87712727a5017ad142d63940589a36cd25647"},{"type":"WEB","url":"https://git.kernel.org/stable/c/29ef43ceb121d67b87f4cbb08439e4e9e732eff8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8bde543d2a5f935ba2a6a6325a2e02f8a9256fbe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f2b65dcb78c8990e4c68a906627433be1fe38a92"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31405.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31405"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"},{"fixed":"29ef43ceb121d67b87f4cbb08439e4e9e732eff8"},{"fixed":"1a6da3dbb9985d00743073a1cc1f96e59f5abc30"},{"fixed":"145e50c2c700fa52b840df7bab206043997dd18e"},{"fixed":"8bde543d2a5f935ba2a6a6325a2e02f8a9256fbe"},{"fixed":"f2b65dcb78c8990e4c68a906627433be1fe38a92"},{"fixed":"24d87712727a5017ad142d63940589a36cd25647"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31405.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.12"},{"fixed":"6.1.167"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.78"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.19"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31405.json"}}],"schema_version":"1.7.5"}