I built Bionic, Cosmic and Disco test kernel with commit 9a764c1e59684c0358e16ccaafd870629f2cfe67. The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1805802
Can you test this kernel and see if it resolves this bug? Note about installing test kernels: • If the test kernel is prior to 4.15(Bionic) you need to install the linux-image and linux-image-extra .deb packages. • If the test kernel is 4.15(Bionic) or newer, you need to install the linux-modules, linux-modules-extra and linux-image-unsigned .deb packages. Thanks in advance! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1805802 Title: [UBUNTU] qeth: fix length check in SNMP processing Status in Ubuntu on IBM z Systems: In Progress Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: In Progress Status in linux source package in Cosmic: In Progress Status in linux source package in Disco: In Progress Bug description: Description: qeth: fix length check in SNMP processing Symptom: Undefined behaviour. Problem: The response for a SNMP request can consist of multiple parts, which the cmd callback stages into a kernel buffer until all parts have been received. If the callback detects that the staging buffer provides insufficient space, it bails out with error. This processing is buggy for the first part of the response - while it initially checks for a length of 'data_len', it later copies an additional amount of 'offsetof(struct qeth_snmp_cmd, data)' bytes. Solution: Fix the calculation of 'data_len' for the first part of the response. Upstream-ID: 9a764c1e59684c0358e16ccaafd870629f2cfe67 Should be applied to all Ubuntu Releases in Service To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1805802/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
