Date: Fri, 29 Jan 2021 06:47:47 +0000 (UTC) From: Philip Paeps <philip@FreeBSD.org> To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: svn commit: r563172 - head/security/vuxml Message-ID: <202101290647.10T6lllh095582@repo.freebsd.org>
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Author: philip Date: Fri Jan 29 06:47:47 2021 New Revision: 563172 URL: https://svnweb.freebsd.org/changeset/ports/563172 Log: security/vuxml: add FreeBSD SA-21:01.fsdisclosure Modified: head/security/vuxml/vuln.xml Modified: head/security/vuxml/vuln.xml ============================================================================== --- head/security/vuxml/vuln.xml Fri Jan 29 04:57:06 2021 (r563171) +++ head/security/vuxml/vuln.xml Fri Jan 29 06:47:47 2021 (r563172) @@ -77,6 +77,44 @@ Notes: * Do not forget port variants (linux-f10-libxml2, libxml2, etc.) --> <vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">; + <vuln vid="a9c6e9be-61fb-11eb-b87a-901b0ef719ab"> + <topic>FreeBSD -- Uninitialized kernel stack leaks in several file systems</topic> + <affects> + <package> + <name>FreeBSD-kernel</name> + <range><ge>12.2</ge><lt>12.2_3</lt></range> + <range><ge>12.1</ge><lt>12.1_13</lt></range> + <range><ge>11.4</ge><lt>11.4_7</lt></range> + </package> + </affects> + <description> + <body xmlns="http://www.w3.org/1999/xhtml">; + <h1>Problem Description:</h1> + <p>Several file systems were not properly initializing the d_off field + of the dirent structures returned by VOP_READDIR. In particular, + tmpfs(5), smbfs(5), autofs(5) and mqueuefs(5) were failing to do so. + As a result, eight uninitialized kernel stack bytes may be leaked to + userspace by these file systems. This problem is not present in + FreeBSD 11.</p> + <p>Additionally, msdosfs(5) was failing to zero-fill a pair of padding + fields in the dirent structure, resulting in a leak of three + uninitialized bytes.</p> + <h1>Impact:</h1> + <p>Kernel stack disclosures may leak sensitive information which could + be used to compromise the security of the system.</p> + </body> + </description> + <references> + <cvename>CVE-2020-25578</cvename> + <cvename>CVE-2020-25579</cvename> + <freebsdsa>SA-21:01.fsdisclosure</freebsdsa> + </references> + <dates> + <discovery>2021-01-29</discovery> + <entry>2021-01-29</entry> + </dates> + </vuln> + <vuln vid="13ca36b8-6141-11eb-8a36-7085c2fb2c14"> <topic>pngcheck -- Buffer-overrun vulnerability</topic> <affects>
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