Bug 1485265 (CVE-2017-13686)

Summary: CVE-2017-13686 kernel: NULL pointer dereference due to late check for a NULL fi field when RTM_F_FIB_MATCH is set
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: agordeev, airlied, ajax, aquini, bhu, blc, bskeggs, dhoward, eparis, esammons, esandeen, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jglisse, jkacur, jonathan, josef, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, lwang, matt, m.a.young, mchehab, mcressma, mguzik, mjg59, mlangsdo, nhorman, nmurray, plougher, quintela, rt-maint, rvrbovsk, steved, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2017-08-25 08:47:45 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-08-25 08:47:02 UTC 
net/ipv4/route.c in the Linux kernel 4.13-rc1 through 4.13-rc6 is too
late to check for a NULL fi field when RTM_F_FIB_MATCH is set, which
allows local users to cause a denial of service (NULL pointer
dereference) or possibly have unspecified other impact via crafted
system calls. NOTE: this does not affect any stable release.

Upstream patch:

https://github.com/torvalds/linux/commit/bc3aae2bbac46dd894c89db5d5e98f7f0ef9e205