Bug 1539599 (CVE-2018-1066)

Summary: CVE-2018-1066 kernel: Null pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() when empty TargetInfo is returned in NTLMSSP setup negotiation response allowing to crash client's kernel
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: airlied, ajax, aquini, bhu, blc, bskeggs, dhoward, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jkacur, john.j5live, jonathan, josef, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, linville, mchehab, mcressma, mjg59, mlangsdo, nmurray, pmatouse, rt-maint, rvrbovsk, skozina, steved, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 4.11 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel's client-side implementation of the cifs protocol. This flaw allows an attacker controlling the server to kernel panic a client which has the CIFS server mounted.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-10-27 10:54:22 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1550814, 1550815, 1550816, 1551374, 1551375    
Bug Blocks: 1539602    

Description Adam Mariš 2018-01-29 09:51:06 UTC
Null pointer dereference was found in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() function that is triggered when empty TargetInfo is returned in NTLMSSP setup negotiation response from Samba server allowing to crash client's kernel.

Bug report:

https://patchwork.kernel.org/patch/10187633/