PT-2026-35011 · Linux+1 · Linux Kernel+1
CVE-2026-31659
·
Published
2026-04-24
·
Updated
2026-07-29
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An issue exists in the batman-adv module where the
batadv tt prepare tvlv global data() function calculates the allocation length for a global TT response using 16-bit temporaries. If a remote originator advertises a sufficiently large global TT, the sum of the TT payload length and the VLAN header offset can exceed 65535, causing an integer wrap before the kmalloc() call. Because the full-table response path continues to use the original payload length when filling tt change, the allocated buffer is too small, leading to a heap-based buffer overflow where data is written past the end of the heap object.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel