Bug 2059294 (CVE-2022-0742)
| Summary: | CVE-2022-0742 kernel: bug memory leaks in ICMPv6 handlers | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Alex <allarkin> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED NOTABUG | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | acaringi, adscvr, airlied, alciregi, bhu, brdeoliv, bskeggs, chwhite, crwood, dhoward, dvlasenk, fhrbata, fpacheco, hdegoede, hkrzesin, jarod, jarodwilson, jburrell, jeremy, jfaracco, jforbes, jglisse, jlelli, joe.lawrence, jonathan, josef, jshortt, jstancek, jwboyer, jwyatt, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, lzampier, masami256, mchehab, nmurray, ptalbert, qzhao, rvrbovsk, scweaver, security-response-team, steved, vkumar, walters, williams, zulinx86 |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Linux kernel 5.17-rc7 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A memory leak flaw was found in the Linux kernel’s ICMPv6 networking protocol, in the way a user generated malicious ICMPv6 packets.
This flaw allows a remote user to crash the system.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-05-17 12:16:12 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: | 2059308, 2059309, 2063534 | ||
| Bug Blocks: | 2059178 | ||
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 2063534] This was fixed for Fedora with the 5.16.13 stable kernel updates. This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2022-0742 |
A flaw in the Linux Kernel found. If looking at a suspect synchronize_net() added in the blamed commit f185de28d9ae ("mld: add new workqueues for process mld events"), I found that igmp6_event_query() and igmp6_event_report() simply forget to free skbs when their respective queues are full. The fix is for the void mld_process_v2(..) in net/ipv6/mcast.c This means that attackers can remotely OOM hosts, which is not nice. Reference: TODO add link to patch when public