CVE-2024-50006

Nov. 8, 2024, 4:15 p.m.

4.7
Medium

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix i_data_sem unlock order in ext4_ind_migrate() Fuzzing reports a possible deadlock in jbd2_log_wait_commit. This issue is triggered when an EXT4_IOC_MIGRATE ioctl is set to require synchronous updates because the file descriptor is opened with O_SYNC. This can lead to the jbd2_journal_stop() function calling jbd2_might_wait_for_commit(), potentially causing a deadlock if the EXT4_IOC_MIGRATE call races with a write(2) system call. This problem only arises when CONFIG_PROVE_LOCKING is enabled. In this case, the jbd2_might_wait_for_commit macro locks jbd2_handle in the jbd2_journal_stop function while i_data_sem is locked. This triggers lockdep because the jbd2_journal_start function might also lock the same jbd2_handle simultaneously. Found by Linux Verification Center (linuxtesting.org) with syzkaller. Rule: add

Product(s) Impacted

Vendor Product Versions
Linux
  • Linux Kernel
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-667
Improper Locking
The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
o linux linux_kernel / / / / / / / /
o linux linux_kernel / / / / / / / /
o linux linux_kernel / / / / / / / /
o linux linux_kernel / / / / / / / /
o linux linux_kernel / / / / / / / /
o linux linux_kernel / / / / / / / /

References

https://git.kernel.org/stable/c/3c46d6060d3e38de22196c1fe7706c5a3c696285
https://git.kernel.org/stable/c/4192adefc9c570698821c5eb9873320eac2fcbf1
https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44
https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820
https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870
https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313f
https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194
https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729
https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ff

Tags

416baaa9-dc9f-4396-8d5f-8c081fb06d67
CWE-667
2024-10-21
CVE-2024-50006

CVSS Score

4.7 / 10

CVSS Data - 3.1

  • Attack Vector: LOCAL
  • Attack Complexity: HIGH
  • Privileges Required: LOW
  • Scope: UNCHANGED
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: HIGH

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

    View Vector String

Timeline

Published: Oct. 21, 2024, 7:15 p.m.
Last Modified: Nov. 8, 2024, 4:15 p.m.

Status : Modified

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

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

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.