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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1427 kernel security update for Debian 8 & 9 10 May 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Debian Operating System: Debian GNU/Linux 9 Debian GNU/Linux 8 Impact/Access: Increased Privileges -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-8897 CVE-2018-1108 CVE-2018-1087 Reference: ESB-2018.1407 ESB-2018.1335 Original Bulletin: http://www.debian.org/security/2018/dsa-4196 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-4196-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso May 08, 2018 https://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : linux CVE ID : CVE-2018-1087 CVE-2018-8897 Debian Bug : 897427 897599 898067 898100 Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation or denial of service. CVE-2018-1087 Andy Lutomirski discovered that the KVM implementation did not properly handle #DB exceptions while deferred by MOV SS/POP SS, allowing an unprivileged KVM guest user to crash the guest or potentially escalate their privileges. CVE-2018-8897 Nick Peterson of Everdox Tech LLC discovered that #DB exceptions that are deferred by MOV SS or POP SS are not properly handled, allowing an unprivileged user to crash the kernel and cause a denial of service. For the oldstable distribution (jessie), these problems have been fixed in version 3.16.56-1+deb8u1. This update includes various fixes for regressions from 3.16.56-1 as released in DSA-4187-1 (Cf. #897427, #898067 and #898100). For the stable distribution (stretch), these problems have been fixed in version 4.9.88-1+deb9u1. The fix for CVE-2018-1108 applied in DSA-4188-1 is temporarily reverted due to various regression, cf. #897599. We recommend that you upgrade your linux packages. For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux 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----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAlryHFFfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0SMQA/9HoJDt2OdyqqtfNUuWfP3sgGV1QVjIJnF39unKRdIaGw9m0RHQUu1G3rC cgxcYcpQ0h10Yy5KVh4APqt55K7aVWVQT6xB0yx2VddMEwwl3rp2r/eL7EtoOkQT zZW5JponzlEAjC9uGk7CouA7z/qFtd5awufFhAjMF5eL4ZQ6pG8wWEbae6DbU9nz c7F+okC4hL6yPuWVEWzTRUFK1W0hs2N+VQgHV/afZaMAAooeZJDJeq1Hn/PVYvwJ IHSOs01+kn0OUFHkVRA7kVdFAYUJlfhsDcXd9nB/lkxhc/HNI1g/dK76mRxjsiMo pJlkPbEmZlOtmNG7vogxEp72ab24j2CITIHiID7ftZH5R/I2CSxp2dIzRVKdmP6P tsfh/KcpUMNwwiPiGed1DMCjtsHOodBOkLtVsoHHJVMZg2xqfCrlqNRUn9o+0DcR gO7HBsWG9K1qvSBWuRtQLT8QP00P3dSdhHmfWyfN8eJxTot+WJuMF/o+jbF6GGrZ lPmzWqg4oL7jvQO8nlEkatjIFejEg0jmt+rCXyEbK8Uc9xjJk35GKIZne5X09BFe 36zY7HbMlPvLP/VHSb6fcPBpQo/HuG0/htAB1HpWS1fPrth1J76g2EmwFSG5Lo51 IRxTXP4UZuOL1sJHQ80220tThKs2dk1Yy77dKk8qQiQ2nC2JgNs= =CskH - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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