Bug 1894589 (CVE-2020-29371) - CVE-2020-29371 kernel: crafted romfs filesystem leaks uninitialized memory to userspace
Summary: CVE-2020-29371 kernel: crafted romfs filesystem leaks uninitialized memory to...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-29371
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1894913
Blocks: 1868928
TreeView+ depends on / blocked
 
Reported: 2020-11-04 15:09 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-12-07 14:42 UTC (History)
45 users (show)

Fixed In Version:
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Last Closed: 2020-11-05 12:24:48 UTC


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Description Guilherme de Almeida Suckevicz 2020-11-04 15:09:42 UTC
Linux Kernel could allow a local authenticated attacker to obtain sensitive information, caused by a flaw in the romfs_dev_read function in romfs_dev_read. By using a specially-crafted file, an attacker could exploit this vulnerability to obtain uninitialized memory information in userspace.

Reference:
https://bugs.chromium.org/p/project-zero/issues/detail?id=2077

Upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2935e0a3cec1ffa558eea90db6279cff83aa3592

Comment 1 Petr Matousek 2020-11-05 12:25:58 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1894913]

Comment 2 Justin M. Forbes 2020-11-05 14:32:58 UTC
This was fixed for Fedora with the 5.8.4 stable kernel updates.


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