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Tue, 23 Sep 2025 08:03:07 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id tJ90BDtU0mgEOQAAD6G6ig (envelope-from ); Tue, 23 Sep 2025 08:03:07 +0000 Date: Tue, 23 Sep 2025 10:03:47 +0200 From: Cyril Hrubis To: Andrea Cervesato Message-ID: References: <20250922-cve-2025-21756-v1-1-074da211288a@suse.com> <4721ff31-7d9f-42a2-8217-6d1d4006f661@suse.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <4721ff31-7d9f-42a2-8217-6d1d4006f661@suse.com> X-Spamd-Result: default: False [-4.30 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; ARC_NA(0.00)[]; MISSING_XM_UA(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCVD_TLS_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; SEM_URIBL_UNKNOWN_FAIL(0.00)[suse.cz:query timed out]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:email,imap1.dmz-prg2.suse.org:helo] X-Virus-Scanned: clamav-milter 1.0.7 at in-5.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [PATCH] cve: add test reproducer for cve-2025-21756 X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ltp@lists.linux.it Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Hi! > I guess we need to verify that, if system is not crashed, we should > check kernel messages in order to find any error. Is there a smart way > to do it? I could parse data via FILE_LINES_SCANF() macro, but that > would require multiple iterations. The alternative is just to parse the > entire /dev/kmsg via read() and to find: > > 1. use-after-free message > 2. test name after it > 3. failing syscall vsock_release > > WDYT? Maybe there are better ways to do it. We have library functions to watch for kernel taint flags, that should be enough to detect this. -- Cyril Hrubis chrubis@suse.cz -- Mailing list info: https://lists.linux.it/listinfo/ltp