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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2709 Linux kernel vulnerability 12 September 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: linux kernel Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-5390 Reference: ESB-2018.2275 ESB-2018.2271 Original Bulletin: http://www.ubuntu.com/usn/usn-3763-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3763-1 September 11, 2018 linux vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 12.04 ESM Summary: The system could be made to crash if it received specially crafted network traffic. Software Description: - - linux: Linux kernel Details: Juha-Matti Tilli discovered that the TCP implementation in the Linux kernel performed algorithmically expensive operations in some situations when handling incoming packets. A remote attacker could use this to cause a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM: linux-image-3.2.0-135-generic 3.2.0-135.181 linux-image-3.2.0-135-generic-pae 3.2.0-135.181 linux-image-3.2.0-135-highbank 3.2.0-135.181 linux-image-3.2.0-135-omap 3.2.0-135.181 linux-image-3.2.0-135-powerpc-smp 3.2.0-135.181 linux-image-3.2.0-135-powerpc64-smp 3.2.0-135.181 linux-image-3.2.0-135-virtual 3.2.0-135.181 linux-image-generic 3.2.0.135.150 linux-image-generic-pae 3.2.0.135.150 linux-image-highbank 3.2.0.135.150 linux-image-omap 3.2.0.135.150 linux-image-powerpc-smp 3.2.0.135.150 linux-image-powerpc64-smp 3.2.0.135.150 linux-image-virtual 3.2.0.135.150 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://usn.ubuntu.com/usn/usn-3763-1 CVE-2018-5390 - --------------------------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 iQIVAwUBW5iaCGaOgq3Tt24GAQgg4w//WhcvEsuDIBLVADoHlZDBtPeYimEf4x00 vhJ1aTW2xc1a93RohiJqKqMJw0siDwrL7gUlKEqBm7sp+y4Uo5a9nxGlyTR5EhuZ +6+Ey61fAEV6D/sign2D1yKPt9nhHi18npuOkogN50DLb3SMWQ7lo9l1fCrxMxZy 8+ZSMm9HqKTLcKhqDkhbTRow5Xzal34PyDuGwpM22LA07woZ9/oyhbw2VK28JQJ8 EAK4hybTq4jgCAjsyYSFaod+r8ol0AKqVR3wdNdZJXj64wOaO9SzaEqoJh2eXN25 RLNA/UcrtLay9qGkQTTh9rujLQGMDWlq+NlirKriGAozO94rua8pDJtnG2uoAD8k 3SkH9ckXNo3e7uSn2o8ojClCw3GUIvN7SeibamFVM8Z/a3h6c1nDQ+mGMQZKldsL 6dq26GYDxwACmsUU/lHi5H6XEa9R2QIzlR0iLmgAzq0HvxmkUZFoTKBV5WOIIx9B knkgNtRzP6W4NLVjuyKknxH8VeQzzSF2WNNLFqFpY+c6VCEIoZ0MlGpZXDnmB7A4 uTErjI46mXr1Xxml6KAIQrYwedeIHMYRYHaehhW8HAfGR8TrAWxgDoWrWamsB16F veDHn4ZV3D/FOKOCkLpFPf10ZvTv3yTU4qu5qezFNM5Wrd9HxDLYWy/UQ0cvobrC VQJBmxcBmmc= =M9Pg -----END PGP SIGNATURE-----