CVE-2026-31405
media: dvb-net: fix OOB access in ULE extension header tables
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.12
References 8
git.kernel.org
- stable/c/e51238718217c4abdb3ccc3b0c0cde265c7ec629
- stable/c/b2bd2ee73b697c177157bba534e1b1064c2e66a0
- stable/c/29ef43ceb121d67b87f4cbb08439e4e9e732eff8
- stable/c/1a6da3dbb9985d00743073a1cc1f96e59f5abc30
- stable/c/145e50c2c700fa52b840df7bab206043997dd18e
- stable/c/8bde543d2a5f935ba2a6a6325a2e02f8a9256fbe
- stable/c/f2b65dcb78c8990e4c68a906627433be1fe38a92
- stable/c/24d87712727a5017ad142d63940589a36cd25647