What is CVE-2024-42304?

CVE-2024-42304 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2024-42304 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-42304?

CVE-2024-42304 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2024-42304?

No patch is currently available for CVE-2024-42304. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2024-42304 actively exploited?

CVE-2024-42304 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-42304

Medium

In the Linux kernel, the following vulnerability has been resolved: ext4: make sure the first directory block is not a hole The syzbot constructs a directory that has no dirblock but is non-inline, i.e. the first directory block is a hole. And no errors are reported when creating files in this directory in the following flow. ext4_mknod ... ext4_add_entry // Read block 0 ext4_read_dirblock(dir, block, DIRENT) bh = ext4_bread(NULL, inode, block, 0) if (!bh && (type == INDEX || type == DIRENT_HTREE)) // The first directory block is a hole // But type == DIRENT, so no error is reported. After that, we get a directory block without '.' and '..' but with a valid dentry. This may cause some code that relies on dot or dotdot (such as make_indexed_dir()) to crash. Therefore when ext4_read_dirblock() finds that the first directory block is a hole report that the filesystem is corrupted and return an error to avoid loading corrupted data from disk causing something bad.

Package Linux Kernel

Published 2024-08-17

Last modified 2026-05-12

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

References

The following references provide additional information about CVE-2024-42304 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
Debian Security
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Cert-Portal
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Kernel patch commit
https://git.kernel.org/stable/c/299bc6ffa57e04e74c6cce866d6c0741fb4897a1
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9771e3d8365ae1dd5e8846a204cb9af14e3e656a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b609753cbbd38f8c0affd4956c0af178348523ac
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2024-42304

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-08-17

Modified 2026-05-12

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2024-42304?

CVE-2024-42304 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2024-42304 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-42304?

CVE-2024-42304 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2024-42304?

No patch is currently available for CVE-2024-42304. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2024-42304 actively exploited?

No — CVE-2024-42304 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.