[ANNOUNCE] libnftnl 1.2.7 release

Phil Sutter phil at netfilter.org
Mon Jul 15 14:58:42 CEST 2024


Hi!

The Netfilter project proudly presents:

        libnftnl 1.2.7

libnftnl is a userspace library providing a low-level netlink
programming interface (API) to the in-kernel nf_tables subsystem.
This library is currently used by nftables.

This release contains fixes only:

* Avoid potential use-after-free when clearing set's expression list
* Avoid misc buffer overflows in attribute setters
* Implement nftnl_obj_unset symbol already exported in libnftnl.map
* Remove unimplemented symbols from libnftnl.map
* Drop some unused internal functions
* Validate per-expression and per-object attribute value and data length
* Enable some attribute validation where missing
* Fix synproxy object setter with unaligned data
* Fix for unsetting userdata attributes in table and chain objects

See ChangeLog that comes attached to this email for more details on
the updates.

You can download it from:

https://www.netfilter.org/projects/libnftnl/downloads.html

Happy firewalling.
-------------- next part --------------
Florian Westphal (1):
  expr: fix buffer overflows in data value setters

Nicholas Vinson (1):
  chain: Removed non-defined functions

Pablo Neira Ayuso (7):
  object: define nftnl_obj_unset()
  set: buffer overflow in NFTNL_SET_DESC_CONCAT setter
  set_elem: use nftnl_data_cpy() in NFTNL_SET_ELEM_{KEY,KEY_END,DATA}
  obj: ct_timeout: setter checks for timeout array boundaries
  expr: immediate: check for chain attribute to release chain name
  udata: incorrect userdata buffer size validation
  utils: remove unused code

Phil Sutter (24):
  set: Do not leave free'd expr_list elements in place
  tests: Fix objref test case
  expr: Repurpose struct expr_ops::max_attr field
  expr: Call expr_ops::set with legal types only
  include: Sync nf_log.h with kernel headers
  expr: Introduce struct expr_ops::attr_policy
  expr: Enforce attr_policy compliance in nftnl_expr_set()
  chain: Validate NFTNL_CHAIN_USE, too
  table: Validate NFTNL_TABLE_USE, too
  flowtable: Validate NFTNL_FLOWTABLE_SIZE, too
  obj: Validate NFTNL_OBJ_TYPE, too
  set: Validate NFTNL_SET_ID, too
  table: Validate NFTNL_TABLE_OWNER, too
  obj: Do not call nftnl_obj_set_data() with zero data_len
  obj: synproxy: Use memcpy() to handle potentially unaligned data
  utils: Fix for wrong variable use in nftnl_assert_validate()
  obj: Return value on setters
  obj: Repurpose struct obj_ops::max_attr field
  obj: Call obj_ops::set with legal attributes only
  obj: Introduce struct obj_ops::attr_policy
  obj: Enforce attr_policy compliance in nftnl_obj_set_data()
  utils: Introduce and use nftnl_set_str_attr()
  obj: Respect data_len when setting attributes
  expr: Respect data_len when setting attributes

corubba (1):
  object: getters take const struct


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