PT-2025-38029 · Linux+3 · Linux Kernel+3
Publicado
2023-07-29
·
Atualizado
2025-11-19
·
CVE-2023-53311
CVSS v3.1
7.8
Alta
| Vetor | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a use-after-free vulnerability within the nilfs2 filesystem. The issue occurs during the unmount process, specifically when inodes are released and the
nilfs root structure is accessed after being freed. This can happen when mark inode dirty sync() is called from iput() after commit 0ae45f63d4ef, which introduced a change in how iput() handles dirty inodes. The vulnerability is triggered when the nilfs load inode block() function attempts to access the freed nilfs root structure. A fix involves adding a "purging flag" to the nilfs structure to prevent operations on the freed memory.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
Improper Resource Release
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Identificadores relacionados
Produtos afetados
Astra Linux
Linux Kernel
Suse
Nilfs2