[SECURITY] [DSA 3886-2] linux regression update

To: debian-security-announce@lists.debian.org

Subject: [SECURITY] [DSA 3886-2] linux regression update

From: Salvatore Bonaccorso <carnil@debian.org>

Date: Tue, 27 Jun 2017 19:31:22 +0000

Message-id: <[🔎] E1dPwCo-0002BI-4q@master.debian.org>

Reply-to: debian-security-announce-request@lists.debian.org

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3886-2 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso June 27, 2017 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : linux Debian Bug : 865303 The security update announced as DSA-3886-1 caused regressions for some applications using Java - including jsvc, LibreOffice and Scilab - due to the fix for CVE-2017-1000364. Updated packages are now available to correct this issue. For reference, the relevant part of the original advisory text follows. CVE-2017-1000364 The Qualys Research Labs discovered that the size of the stack guard page is not sufficiently large. The stack-pointer can jump over the guard-page and moving from the stack into another memory region without accessing the guard-page. In this case no page-fault exception is raised and the stack extends into the other memory region. An attacker can exploit this flaw for privilege escalation. The default stack gap protection is set to 256 pages and can be configured via the stack_guard_gap kernel parameter on the kernel command line. Further details can be found at https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt For the oldstable distribution (jessie), this problem has been fixed in version 3.16.43-2+deb8u2. For the stable distribution (stretch), this problem has been fixed in version 4.9.30-2+deb9u2. We recommend that you upgrade your linux packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAllSsjxfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0Q7Bw//Sdd+3lkJjSOUvuFOVpyrXR6zGgCW4+iQEDkTtfit5NZ5Uwa+89gQ3akJ CRvYJ55aCVc/LCrBpxaGhI0lb8kUSK4dLFTPnC+zm5SJF4XbXCCYhS3+UAC85Imo ElRMySUDEmbHLsnUvdcWAjcBmgV06asT2Ia+QsaGajLMf/+5reDI1D/MNXb8AI8M mnCgSOIlSy4neZTxKwmyYHtdMfrKMTYbXMG9zUfrM7jsOfbn6KvsaPWTdP1+5EBO lPrHrNkVzA8VUrO9sje82/kLpfl4cYPYlEoQfaXQUogrKuvMkJ0gOn858OqdD038 nbItnvdcmbHsFMckhykOOheL3Iin3QxOWHBK93MZCZseubNAphrkqFV5+omki5eD +M1UkvR15dPBilub0l+a8cVUIO2TY2yJSSaDZgTEPepuyTbOxCc0hvwNoqdG0hH6 gD6edfWJ1TNiDVD1pW9SGRF0QIf+HyoKhEVGyuJfJQtRe4hdgCcKxu2VAGbpdqul qIlu4UaQhzclx4P2urIRR+HRMX6K61IAj3mxuItUkP+Xa+xxTby2soGRH6Q9IMHc iqgdYZmmWe3gc21I8BaKclefDP8tNJgHiLr7j+CwQawzuj3lWHJ9ZmXx0EfU1VJT ZYbZthQ7XChu5fI6uRfmGWMocE3700HzQDtb6/NFRnsElxlx5L4= =VAqb -----END PGP SIGNATURE-----