CVE - CVE-2024-50006

CVE-ID
CVE-2024-50006	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44 URL:https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44 MISC:https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820 URL:https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820 MISC:https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870 URL:https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870 MISC:https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313f URL:https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313f MISC:https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194 URL:https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194 MISC:https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729 URL:https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729 MISC:https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ff URL:https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ff
Assigning CNA
kernel.org
Date Record Created
20241021	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241021)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
This is an record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities.
Search CVE Using Keywords: You can also search by reference using the CVE Reference Maps.
For More Information: CVE Request Web Form (select "Other" from dropdown)