CVE-2024-34027

HIGH7.0

f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock

Published Jun 24, 2024

Modified 8 months ago

Details

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

f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock

It needs to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock to avoid racing with checkpoint, otherwise, filesystem metadata including blkaddr in dnode, inode fields and .total_valid_block_count may be corrupted after SPO case.

References

WEBhttps://git.kernel.org/stable/c/0a4ed2d97cb6d044196cc3e726b6699222b41019 WEBhttps://git.kernel.org/stable/c/329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b WEBhttps://git.kernel.org/stable/c/5d47d63883735718825ca2efc4fca6915469774f WEBhttps://git.kernel.org/stable/c/69136304fd144144a4828c7b7b149d0f80321ba4 WEBhttps://git.kernel.org/stable/c/a6e1f7744e9b84f86a629a76024bba8468aa153b WEBhttps://git.kernel.org/stable/c/b5bac43875aa27ec032dbbb86173baae6dce6182 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2024-34027

CVSS Analysis

CVSS v3.1

7.0

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

HighAC:H

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

7/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Ecosystems

Timeline

PublishedJun 24, 2024

ModifiedMay 4, 2025