CVE-2024-50006
Linux Kernel EXT4 Data Semaphores Deadlock
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
INFO
Published Date :
Oct. 21, 2024, 7:15 p.m.
Last Modified :
Nov. 8, 2024, 4:15 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.0
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-2024-50006.
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).
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The following list is the news that have been mention
CVE-2024-50006 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-50006 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.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 08, 2024
Action Type Old Value New Value Added Reference kernel.org https://git.kernel.org/stable/c/4192adefc9c570698821c5eb9873320eac2fcbf1 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/3c46d6060d3e38de22196c1fe7706c5a3c696285 [No types assigned] -
Initial Analysis by [email protected]
Nov. 01, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44 No Types Assigned https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44 Patch Changed Reference Type https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820 No Types Assigned https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820 Patch Changed Reference Type https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870 No Types Assigned https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870 Patch Changed Reference Type https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313f No Types Assigned https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313f Patch Changed Reference Type https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194 No Types Assigned https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194 Patch Changed Reference Type https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729 No Types Assigned https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729 Patch Changed Reference Type https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ff No Types Assigned https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ff Patch Added CWE NIST CWE-667 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.10.227 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.168 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.113 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.55 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.11 up to (excluding) 6.11.3 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2024
Action Type Old Value New Value Added 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 Added Reference kernel.org https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ff [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313f [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-50006 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-2024-50006
weaknesses.