Bug 1775724 (CVE-2019-19077) - CVE-2019-19077 kernel: memory leak in bnxt_re_create_srq function in drivers/infiniband/hw/bnxt_re/ib_verbs.c
Summary: CVE-2019-19077 kernel: memory leak in bnxt_re_create_srq function in drivers/...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19077
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1724772 1775725 1829254 1829255 1829256 1829257
Blocks: 1775726
TreeView+ depends on / blocked
 
Reported: 2019-11-22 16:33 UTC by Guilherme de Almeida Suckevicz
Modified: 2023-10-06 18:48 UTC (History)
46 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2021-10-25 22:12:51 UTC
Embargoed:

Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2019-11-22 16:33:49 UTC 
A memory leak in the bnxt_re_create_srq() function in drivers/infiniband/hw/bnxt_re/ib_verbs.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering copy to udata failures, aka CID-4a9d46a9fe14.

Upstream commit:
https://github.com/torvalds/linux/commit/4a9d46a9fe14401f21df69cea97c62396d5fb053
Comment 1 Guilherme de Almeida Suckevicz 2019-11-22 16:34:18 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1775725]
Comment 2 Justin M. Forbes 2019-11-27 17:32:15 UTC 
This is fixed for Fedora in the 5.3.13 stable kernel update.
Comment 5 Petr Matousek 2020-04-29 10:12:09 UTC 
Statement:

This issue is rated as having Moderate impact because local attacker is needed in order to trigger it.
Comment 6 Petr Matousek 2020-04-29 10:12:18 UTC 
Mitigation:

In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module bnxt_re. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278 .
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