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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1663 [SECURITY] [DLA 1392-1] linux security update 4 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Debian Operating System: Debian GNU/Linux 7 Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-10940 CVE-2018-8897 CVE-2018-1130 CVE-2018-1093 Reference: ASB-2018.0107 ESB-2018.1655 ESB-2018.1623 ESB-2018.1407 ESB-2018.1335 Original Bulletin: https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html - --------------------------BEGIN INCLUDED TEXT-------------------- Package : linux Version : 3.2.102-1 CVE ID : CVE-2018-1093 CVE-2018-1130 CVE-2018-8897 CVE-2018-10940 Debian Bug : 898100 Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service. CVE-2018-1093 Wen Xu reported that a crafted ext4 filesystem image could trigger an out-of-bounds read in the ext4_valid_block_bitmap() function. A local user able to mount arbitrary filesystems could use this for denial of service. CVE-2018-1130 The syzbot software found that the DCCP implementation of sendmsg() does not check the socket state, potentially leading to a null pointer dereference. A local user could use this to cause a denial of service (crash). 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. CVE-2018-10940 Dan Carpenter reported that the cdrom driver does not correctly validate the parameter to the CDROM_MEDIA_CHANGED ioctl. A user with access to a cdrom device could use this to cause a denial of service (crash). For Debian 7 "Wheezy", these problems have been fixed in version 3.2.102-1. This version also includes bug fixes from upstream version 3.2.102, including a fix for a regression in the SCTP implementation in version 3.2.101. We recommend that you upgrade your linux packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Ben Hutchings - Debian developer, member of kernel, installer and LTS teams - --------------------------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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWxSbDGaOgq3Tt24GAQgwghAAvrNk4Op6ODTrgH6O7AbTfUWVukOGqaa+ a1mA+7wkjk1gElD9qwkVQ8ZcUrEaHDJl2gQof9D8fezap+P+HI4mPG8k1T27jGqn OXAuFYxD7rfg9JU3TOXirjCdS0q/wm8oIqSxlCZdcaEiz6bCAZp9JkFuz2sw8UXs eFrqYOh3QqIaK2s8iNHXbSlVJCREEMnYVEr295REwqQqpt4Hmi2h6a0WEqvyqhBd nVGRXHkfMZmCC70tmAo2tWWAoLR4Lk8TqO0see0LZEn2C58JRm4dE2C7VecsOoB8 87AfRmpJMDaVpwKUU7LwrQFc+SUx2U8iT04NF43r7H/VUlZvA+mHicLzboMeVwqC kA1pk6swbSEplKV0se9BhrQ0FdyHcP1MKybJrxjYf+OhnW8h8Irmw6vaPWLTd6n2 I6/4NWjIRRn5Ya9v4Ulc31JulNo2F6y9YxirCl+dKX7lmDqyVCo7qcBrNmla05xB Sflj1njdlLo+ijt708bw1u+XxywwCbEGaTR1OLMmtYTFygcT4A4qy6utYuFt5WF7 NOpM2tHweWw3cZ8cOZgxNq07j/xGzNKetXUB7mUKuUw2wj1JaAnm6pdFJsjkVbsF 04zfkahD7MpNRyIdVzPf/yR6+FTUtvu0NWdLQXN7rheXG7ZwQc3MwY7/LyBYr0Cs bKx5AdawRP4= =zgC6 -----END PGP SIGNATURE-----