0.0
NA
CVE-2024-33847
"F2FS Compress Inode Truncation Vulnerability"
Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: don't allow unaligned truncation on released compress inode f2fs image may be corrupted after below testcase: - mkfs.f2fs -O extra_attr,compression -f /dev/vdb - mount /dev/vdb /mnt/f2fs - touch /mnt/f2fs/file - f2fs_io setflags compression /mnt/f2fs/file - dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=4 - f2fs_io release_cblocks /mnt/f2fs/file - truncate -s 8192 /mnt/f2fs/file - umount /mnt/f2fs - fsck.f2fs /dev/vdb [ASSERT] (fsck_chk_inode_blk:1256) --> ino: 0x5 has i_blocks: 0x00000002, but has 0x3 blocks [FSCK] valid_block_count matching with CP [Fail] [0x4, 0x5] [FSCK] other corrupted bugs [Fail] The reason is: partial truncation assume compressed inode has reserved blocks, after partial truncation, valid block count may change w/o .i_blocks and .total_valid_block_count update, result in corruption. This patch only allow cluster size aligned truncation on released compress inode for fixing.

INFO

Published Date :

June 24, 2024, 2:15 p.m.

Last Modified :

June 24, 2024, 7:26 p.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

Exploitability Score :

Affected Products

The following products are affected by CVE-2024-33847 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2024-33847.

URL Resource
https://git.kernel.org/stable/c/29ed2b5dd521ce7c5d8466cd70bf0cc9d07afeee
https://git.kernel.org/stable/c/3ccf5210dc941a7aa0180596ac021568be4d35ec
https://git.kernel.org/stable/c/5268241b41b1c5d0acca75e9b97d4fd719251c8c
https://git.kernel.org/stable/c/8acae047215024d1ac499b3c8337ef1b952f160b
https://git.kernel.org/stable/c/9f9341064a9b5246a32a7fe56b9f80c6f7f3c62d
https://git.kernel.org/stable/c/b8962cf98595d1ec62f40f23667de830567ec8bc

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-33847 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-33847 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jun. 24, 2024

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: don't allow unaligned truncation on released compress inode f2fs image may be corrupted after below testcase: - mkfs.f2fs -O extra_attr,compression -f /dev/vdb - mount /dev/vdb /mnt/f2fs - touch /mnt/f2fs/file - f2fs_io setflags compression /mnt/f2fs/file - dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=4 - f2fs_io release_cblocks /mnt/f2fs/file - truncate -s 8192 /mnt/f2fs/file - umount /mnt/f2fs - fsck.f2fs /dev/vdb [ASSERT] (fsck_chk_inode_blk:1256) --> ino: 0x5 has i_blocks: 0x00000002, but has 0x3 blocks [FSCK] valid_block_count matching with CP [Fail] [0x4, 0x5] [FSCK] other corrupted bugs [Fail] The reason is: partial truncation assume compressed inode has reserved blocks, after partial truncation, valid block count may change w/o .i_blocks and .total_valid_block_count update, result in corruption. This patch only allow cluster size aligned truncation on released compress inode for fixing.
    Added Reference kernel.org https://git.kernel.org/stable/c/b8962cf98595d1ec62f40f23667de830567ec8bc [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/8acae047215024d1ac499b3c8337ef1b952f160b [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/3ccf5210dc941a7aa0180596ac021568be4d35ec [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/9f9341064a9b5246a32a7fe56b9f80c6f7f3c62d [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/5268241b41b1c5d0acca75e9b97d4fd719251c8c [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/29ed2b5dd521ce7c5d8466cd70bf0cc9d07afeee [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-33847 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-33847 weaknesses.

NONE - Vulnerability Scoring System
: