Bug 1775050 (CVE-2019-19057)
Summary: | CVE-2019-19057 kernel: Two memory leaks in the mwifiex_pcie_init_evt_ring() function in drivers/net/wireless/marvell/mwifiex/pcie.c allows for a DoS | ||
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Product: | [Other] Security Response | Reporter: | Marian Rehak <mrehak> |
Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
Status: | CLOSED ERRATA | QA Contact: | |
Severity: | low | Docs Contact: | |
Priority: | low | ||
Version: | unspecified | CC: | acaringi, airlied, bdettelb, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jschorr, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, pmatouse, qzhao, rt-maint, rvrbovsk, steved, williams, wmealing |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | If docs needed, set a value | |
Doc Text: |
Two memory leak flaws were found in the Linux kernel's mwifiex_pcie_init_evt_ring() function. A local attacker, able to reload the kernel module or hotplug Marvell WiFi hardware using this driver, can cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2020-04-28 16:34:52 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: | 1775051, 1776600, 1776601, 1776602, 1781531, 1781534 | ||
Bug Blocks: | 1775052 |
Description
Marian Rehak
2019-11-21 11:40:59 UTC
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1775051] My initial findings show that this is only on bringing up the device, not on a regular interval. It is definitely wasted memory if device bringup fails and triggers the flaw, but I don't imagine this is a big impact flaw. The affected function mwifiex_pcie_init_evt_ring Which is called in two possible ways. mwifiex_init_pcie() -> mwifiex_pcie_alloc_buffers() -> mwifiex_pcie_create_evtbd_ring() -> mwifiex_pcie_init_evt_ring() mwifiex_pcie_up_dev() -> mwifiex_pcie_alloc_buffers() -> mwifiex_pcie_create_evtbd_ring() -> mwifiex_pcie_init_evt_ring() Both of these functions are used during PCIE device initialization time, with no network traffic existing on the card at this time. Other reports may show this as a network based attack however as this issue is during the hardware initialization the network attack vector is not correct. This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:1567 https://access.redhat.com/errata/RHSA-2020:1567 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:1769 https://access.redhat.com/errata/RHSA-2020:1769 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-2019-19057 |