CVE-2022-49747

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

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

29 Oct 2025, 17:18

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: erofs/zmap.c: Se corrigió el cálculo incorrecto del desplazamiento. El desplazamiento efectivo para añadir a length se calculaba incorrectamente, lo que provocaba que iomap->length se estableciera en 0, lo que activaba un WARN_ON en iomap_iter_done(). Se corrigió y se describió en los comentarios. syzbot reportó esto como un fallo en un problema relacionado con una advertencia encontrada en iomap_iter_done(), pero no relacionada con erofs. Reproductor C: https://syzkaller.appspot.com/text?tag=ReproC&x=1037a6b2880000 Configuración del kernel: https://syzkaller.appspot.com/text?tag=KernelConfig&x=e2021a61197ebe02 Enlace del panel: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE NVD-CWE-noinfo
References () https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb - () https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb - Patch
References () https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff - () https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff - Patch
References () https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c - () https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c - Patch

27 Mar 2025, 17:15

Type Values Removed Values Added
New CVE
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