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[87.106.108.193]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48fec9cd43bsm5726190f8f.14.2026.11.04.13.09.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2026 13:09:38 -0800 (PST) From: =?utf-8?q?G=C3=BCnther_Noack?= Date: Wed, 04 Nov 2026 22:09:05 +0100 Subject: [PATCH v2 19/27] selftests/landlock: Fix off-by-one in regex_escape() X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20261104-selftests-refactor-v2-19-c52f23f7ce33@gmail.com> References: <20261104-selftests-refactor-v2-0-c52f23f7ce33@gmail.com> In-Reply-To: <20261104-selftests-refactor-v2-0-c52f23f7ce33@gmail.com> To: =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= , =?utf-8?q?G=C3=BCnther_Noack?= , Shuah Khan Cc: linux-security-module@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?G=C3=BCnther_Noack?= X-Mailer: b4 0.15.2 The final check in regex_escape() was off by one byte and should require one byte less to put the NUL byte. Signed-off-by: Günther Noack --- tools/testing/selftests/landlock/common.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/landlock/common.h b/tools/testing/selftests/landlock/common.h index dcfdcfecde86..0df8ae88d4fa 100644 --- a/tools/testing/selftests/landlock/common.h +++ b/tools/testing/selftests/landlock/common.h @@ -307,7 +307,7 @@ static __maybe_unused ssize_t regex_escape(const char *const src, char *dst, *d++ = *s; } } - if (d >= dst + dst_size - 1) + if (d >= dst + dst_size) goto err_nomem; *d = '\0'; -- 2.56.0