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This was fixed for Fedora with the 4.17.13 stable kernel updates.
There are 2 more upstream patches that fix upstream's fa0f527358bd which was backported to Fedora. we believe the below 2 patches should be backported also, as they have direct security impact: commit 5d407b071dc369c26a38398326ee2be53651cfe4 Author: Taehee Yoo <ap420073> Date: Mon Sep 10 02:47:05 2018 +0900 ip: frags: fix crash in ip_do_fragment() commit 70837ffe3085c9a91488b52ca13ac84424da1042 Author: Dan Carpenter <dan.carpenter> Date: Mon Aug 6 22:17:35 2018 +0300 ipv4: frags: precedence bug in ip_expire()
70837ffe3085c9a91488b52ca13ac84424da1042 fixes a bug that was introduced 4 days prior, it should not be in any shipped tree anywhere.
5d407b071dc3 ("ip: frags: fix crash in ip_do_fragment()") fixes tag that is only applicable to rawhide $ git tag --contains fa0f527358bd v4.19-rc1 v4.19-rc2 v4.19-rc3
Closing this as neither patch is relevant to Fedora.
*** Bug 1630279 has been marked as a duplicate of this bug. ***
these bugs are relevant to fedora, as they existed not only in 4.19-rc kernels, but in all kernels which has backported fa0f527358bd in order to fix CVE-2018-5391, i.e. in fedora-27/28 also. now fedora-27/28 has this fix for fa0f527358bd, thank you: https://src.fedoraproject.org/cgit/rpms/kernel.git/commit/?h=f27&id=dfce0df4f20e7da1c5c707dabd658d657ee7aac5 https://src.fedoraproject.org/cgit/rpms/kernel.git/commit/?h=f28&id=0fc194c42cc120bc3f00abfe5d57450b6a29681a