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Review reviewHigh

CVE-2026-64411

Linux

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 expl...

CVSS
7.1
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.25
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.1

Vulnerability overview

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 expl...

Affected product and versions

Product
Linux
Affected versions
>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4c046ca4e35a83ea32f6e748f54139f5fe2a1d01, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ab63ccefb9c71627f957a0724c2b9ebc869c6f20, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c6f539311e58e76aa96feef0f1572b13a564f8a2, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2664f537ca5bcb2ef3fac2683dcca602e51fad24, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7436da6c1bc44654b7f11a17e746f6999fd37250, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6fe8d3cecd20bfaaaf440db3a06ba674d2f2e322, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b6183b1b88a722b6d8ea0cecc99eba168a15e0be, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a622d2e9608c9dff47fc2e5759ac7aa3a836b45d, >= 2.6.12
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
Not available
CVE-2026-64411 — Linux | SECUFOCUS NOW