CVE-2022-49747

In the Linux kernel, the following vulnerability has been resolved: erofs/zmap.c: Fix incorrect offset calculation Effective offset to add to length was being incorrectly calculated, which resulted in iomap->length being set to 0, triggering a WARN_ON in iomap_iter_done(). Fix that, and describe it in comments. This was reported as a crash by syzbot under an issue about a warning encountered in iomap_iter_done(), but unrelated to erofs. C reproducer: https://syzkaller.appspot.com/text?tag=ReproC&x=1037a6b2880000 Kernel config: https://syzkaller.appspot.com/text?tag=KernelConfig&x=e2021a61197ebe02 Dashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb	Patch
https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff	Patch
https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.2:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.2:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.2:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.2:rc4::::::

History

No history.

Information

Published : 2025-03-27 17:15

Updated : 2025-10-29 17:18

NVD link : CVE-2022-49747

Mitre link : CVE-2022-49747

CVE.ORG link : CVE-2022-49747

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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