Bug 1945379 (CVE-2021-29649) - CVE-2021-29649 kernel: memory leak in user mode driver due to lack of cleanup steps in kernel/usermode_driver.c and kernel/bpf/preload/bpf_preload_kern.c
Summary: CVE-2021-29649 kernel: memory leak in user mode driver due to lack of cleanup...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-29649
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: 1945384
Blocks: 1945386
TreeView+ depends on / blocked
 
Reported: 2021-03-31 18:27 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-04-13 12:39 UTC (History)
44 users (show)

Fixed In Version:
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Doc Text:
A flaw was found in the Linux kernel. The user mode driver (UMD) has a copy_process() memory leak, related to a lack of cleanup steps in kernel/usermode_driver.c and kernel/bpf/preload/bpf_preload_kern.c.
Clone Of:
Environment:
Last Closed: 2021-04-13 12:39:11 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2021-03-31 18:27:36 UTC 
An issue was discovered in the Linux kernel before 5.11.11. The user mode driver (UMD) has a copy_process() memory leak, related to a lack of cleanup steps in kernel/usermode_driver.c and kernel/bpf/preload/bpf_preload_kern.c.

Reference and upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f60a85cad677c4f9bb4cadd764f1d106c38c7cf8
Comment 1 Guilherme de Almeida Suckevicz 2021-03-31 18:32:05 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1945384]
Comment 2 Fedora Update System 2021-04-02 00:17:23 UTC 
FEDORA-2021-41fb54ae9f has been pushed to the Fedora 34 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 3 Fedora Update System 2021-04-02 01:14:31 UTC 
FEDORA-2021-6b0f287b8b has been pushed to the Fedora 32 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 4 Fedora Update System 2021-04-02 01:21:35 UTC 
FEDORA-2021-2306e89112 has been pushed to the Fedora 33 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 5 Product Security DevOps Team 2021-04-13 12:39:11 UTC 
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-2021-29649
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