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CVE-2024-50006 In the Linux kernel, the following vulnerability has been resolved: ext4: fix i_data_sem unlock order in…

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

Produits et versions touchés

Produit Versions touchées Corrigé en
Linux 6.12 premières → < 6.12 6.12
Linux 6.11 premières → < 6.11.3 6.11.3
Linux 6.10 premières → < 6.10.14 6.10.14
Linux 6.6 premières → < 6.6.55 6.6.55
Linux 6.1 premières → < 6.1.113 6.1.113
Linux 5.15 premières → < 5.15.168 5.15.168
Linux 5.10 premières → < 5.10.227 5.10.227
Linux 5.4 premières → < 5.4.285 5.4.285
Linux 4.19 premières → < 4.19.323 4.19.323
Afficher les 8 autres branches
Produit Versions touchées Corrigé en
Linux 3.10 Pas de correctif indiqué
RUGGEDCOM RST2428P 3.2 premières → < 3.2 3.2
SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family 3.2 premières → < 3.2 3.2
SCALANCE XCM-/XRM-/XCH-/XRH-300 family 3.2 premières → < 3.2 3.2
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem 1.1 premières → < 1.1.1 1.1.1
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.0 → < 3.1.5 3.1.5
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 3.1.0 → < 3.1.5 3.1.5
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.0 → < 3.1.5 3.1.5

Références

Chronologie

  1. Publiée
  2. Dernière modification

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