linux-cve-announce - CVE-2023-53027: erofs: fix kvcalloc() misuse with __GFP

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Message-ID: <2025032719-CVE-2023-53027-dc56@gregkh>
Date: Thu, 27 Mar 2025 17:44:14 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2023-53027: erofs: fix kvcalloc() misuse with __GFP_NOFAIL

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

erofs: fix kvcalloc() misuse with __GFP_NOFAIL

As reported by syzbot [1], kvcalloc() cannot work with  __GFP_NOFAIL.
Let's use kcalloc() instead.

[1] https://lore.kernel.org/r/0000000000007796bd05f1852ec2@google.com

The Linux kernel CVE team has assigned CVE-2023-53027 to this issue.


Affected and fixed versions
===========================

	Issue introduced in 6.0 with commit 4f05687fd7036473605a161ca47a2cf9fd3cbfc5 and fixed in 6.1.9 with commit 7b28a8920844042ca9f44934d8f15d210ef42c75
	Issue introduced in 6.0 with commit 4f05687fd7036473605a161ca47a2cf9fd3cbfc5 and fixed in 6.2 with commit 12724ba38992bd045e92a9a88a868a530f89d13e

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2023-53027
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	fs/erofs/zdata.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/7b28a8920844042ca9f44934d8f15d210ef42c75
	https://git.kernel.org/stable/c/12724ba38992bd045e92a9a88a868a530f89d13e