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[87.106.108.193]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48c71d113dasm11244781f8f.19.2026.10.08.07.27.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Oct 2026 07:27:15 -0700 (PDT) From: =?UTF-8?q?G=C3=BCnther=20Noack?= To: =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= Cc: Wang Yan , linux-kselftest@vger.kernel.org, =?UTF-8?q?G=C3=BCnther=20Noack?= , =?UTF-8?q?G=C3=BCnther=20Noack?= , Shuah Khan , linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 13/27] selftests/landlock: Fix memory leak in audit_init_filter_exe() Date: Thu, 8 Oct 2026 16:25:42 +0200 Message-ID: <20261008142604.39107-15-gnoack3000@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261008142604.39107-2-gnoack3000@gmail.com> References: <20261008142604.39107-2-gnoack3000@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit audit_init_filter_exe() does not free the buffer returned by realpath(3) when the path is too long. Assisted-by: LLM Signed-off-by: Günther Noack --- tools/testing/selftests/landlock/audit.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/landlock/audit.h b/tools/testing/selftests/landlock/audit.h index d428ce802f49..1e533b4e26db 100644 --- a/tools/testing/selftests/landlock/audit.h +++ b/tools/testing/selftests/landlock/audit.h @@ -507,8 +507,10 @@ static int audit_init_filter_exe(struct audit_filter *filter, const char *path) /* No need for the terminating NULL byte. */ filter->exe_len = strlen(absolute_path); - if (filter->exe_len > sizeof(filter->exe)) + if (filter->exe_len > sizeof(filter->exe)) { + free(absolute_path); return -E2BIG; + } memcpy(filter->exe, absolute_path, filter->exe_len); free(absolute_path); -- 2.56.0