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Tue, 5 Mar 2024 18:45:05 +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 D5gDDDFo52XIIwAAD6G6ig (envelope-from ); Tue, 05 Mar 2024 18:45:05 +0000 Date: Tue, 5 Mar 2024 19:45:04 +0100 From: Michal Hocko To: cve@kernel.org, linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman Subject: Re: CVE-2021-47090: mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page() Message-ID: References: <2024030413-CVE-2021-47090-a429@gregkh> 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=us-ascii Content-Disposition: inline In-Reply-To: <2024030413-CVE-2021-47090-a429@gregkh> Authentication-Results: smtp-out2.suse.de; dkim=pass header.d=suse.com header.s=susede1 header.b=Vdu527ov X-Spamd-Result: default: False [-2.75 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_DKIM_ALLOW(-0.20)[suse.com:s=susede1]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; DKIM_TRACE(0.00)[suse.com:+]; MX_GOOD(-0.01)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:dkim]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; MID_RHS_NOT_FQDN(0.50)[]; RCVD_TLS_ALL(0.00)[]; BAYES_HAM(-2.94)[99.73%] X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Rspamd-Queue-Id: 548D2200F9 X-Spam-Level: X-Spam-Score: -2.75 X-Spam-Flag: NO On Mon 04-03-24 19:11:17, Greg KH wrote: > Description > =========== > > In the Linux kernel, the following vulnerability has been resolved: > > mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page() I would like to dispute this CVE. The interface is behind CAP_SYSADMIN and allowing access to this to any untrusted party is risking serious troubles. This is a testing only feature. -- Michal Hocko SUSE Labs