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Tue, 08 Sep 2026 08:26:51 -0700 (PDT) From: Alexander Martyniuk To: stable@vger.kernel.org, Greg Kroah-Hartman Cc: Alexander Martyniuk , lvc-project@linuxtesting.org, David Howells , Marc Dionne , linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, Deepakkumar Karn , Christian Brauner Subject: [PATCH 6.12/6.18] afs: Fix leak of ungot volume Date: Tue, 8 Sep 2026 18:26:27 +0300 Message-ID: <20260908152628.200856-1-alexevgmart@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: David Howells commit d672c276f685a540ed2b2a8bafaed4650a89022c upstream. Fix afs_lookup_volume_rcu() so that it doesn't leak a dying volume if afs_try_get_volume() fails. Fixes: 32222f09782f ("afs: Apply server breaks to mmap'd files in the call processor") Closes: https://sashiko.dev/#/patchset/20260609081738.770127-1-dhowells%40redhat.com Signed-off-by: David Howells Link: https://patch.msgid.link/20260622090856.2746629-17-dhowells@redhat.com cc: Marc Dionne cc: Deepakkumar Karn cc: linux-afs@lists.infradead.org Signed-off-by: Christian Brauner (Amutable) Signed-off-by: Alexander Martyniuk --- Backport fix for CVE-2026-80878 fs/afs/callback.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/afs/callback.c b/fs/afs/callback.c index 0a09a9ca3c6b..652c4301d56e 100644 --- a/fs/afs/callback.c +++ b/fs/afs/callback.c @@ -138,6 +138,7 @@ static struct afs_volume *afs_lookup_volume_rcu(struct afs_cell *cell, if (volume && afs_try_get_volume(volume, afs_volume_trace_get_callback)) break; + volume = NULL; if (!need_seqretry(&cell->volume_lock, seq)) break; } -- 2.43.0