linux-kernel - [PATCH net v3 0/1] atm: mpoa: Fix UAF on qos

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Message-Id: <20251204062421.96986-1-ii4gsp@gmail.com>
Date: Thu,  4 Dec 2025 15:24:20 +0900
From: Minseong Kim <ii4gsp@...il.com>
To: "David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Minseong Kim <ii4gsp@...il.com>
Subject: [PATCH net v3 0/1] atm: mpoa: Fix UAF on qos_head list in procfs

Changes since v2:
  - Replace atm_mpoa_search_qos() with atm_mpoa_get_qos() to avoid
    returning an unprotected pointer.
  - Add atm_mpoa_delete_qos_by_ip() so search+unlink+free is atomic
    under qos_mutex, preventing double-free/UAF.
  - Update all callers accordingly.

Minseong Kim (1):
  atm: mpoa: Fix UAF on qos_head list in procfs

 net/atm/mpc.c         | 184 ++++++++++++++++++++++++++++++++----------
 net/atm/mpc.h         |   3 +-
 net/atm/mpoa_caches.c |  17 ++--
 net/atm/mpoa_proc.c   |   2 +-
 4 files changed, 149 insertions(+), 57 deletions(-)

-- 
2.39.5 (Apple Git-154)