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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-64411 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: terminate table name before find_table_lock() update_counters() and compat_update_counters() forward a user-supplied 32-byte table name to find_table_lock() without NUL-terminating it. On a lookup miss, find_inlist_lock() calls try_then_request_module(..., "%s%s", "ebtable_", name), and vsnprintf() reads past the name field and the stack object until it hits a zero byte. BUG: KASAN: stack-out-of-bounds in string (lib/vsprintf.c:648 lib/vsprintf.c:730) Read of size 1 at addr ffff8880119dfb20 by task exploit/147 Call Trace: ... string (lib/vsprintf.c:648 lib/vsprintf.c:730) vsnprintf (lib/vsprintf.c:2945) __request_module (kernel/module/kmod.c:150) do_update_counters.isra.0 (net/bridge/netfilter/ebtables.c:371 net/bridge/netfilter/ebtables.c:380) update_counters (net/bridge/netfilter/ebtables.c:1440) do_ebt_set_ctl (net/bridge/netfilter/ebtables.c:2573) nf_setsockopt (net/netfilter/nf_sockopt.c:101) ip_setsockopt (net/ipv4/ip_sockglue.c:1424) raw_setsockopt (net/ipv4/raw.c:847) __sys_setsockopt (net/socket.c:2393) ... compat_do_replace() shares the same unterminated name via compat_copy_ebt_replace_from_user(); terminate it there too so all find_table_lock() callers behave alike. The other callers already terminate the name after the copy.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/2664f537ca5bcb2ef3fac2683dcca602e51fad24 kernel.org
https://git.kernel.org/stable/c/4c046ca4e35a83ea32f6e748f54139f5fe2a1d01 kernel.org
https://git.kernel.org/stable/c/6fe8d3cecd20bfaaaf440db3a06ba674d2f2e322 kernel.org
https://git.kernel.org/stable/c/7436da6c1bc44654b7f11a17e746f6999fd37250 kernel.org
https://git.kernel.org/stable/c/a622d2e9608c9dff47fc2e5759ac7aa3a836b45d kernel.org
https://git.kernel.org/stable/c/ab63ccefb9c71627f957a0724c2b9ebc869c6f20 kernel.org
https://git.kernel.org/stable/c/b6183b1b88a722b6d8ea0cecc99eba168a15e0be kernel.org
https://git.kernel.org/stable/c/c6f539311e58e76aa96feef0f1572b13a564f8a2 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-64411
NVD Published Date:
07/25/2026
NVD Last Modified:
08/17/2026
Source:
kernel.org