Orta CVSS 4.7
CVE-2024-50006: Linux Kernel: güvenlik açığı
Açıklama (NVD)
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
Özet bilgiler
- Ürün
- Linux Linux Kernel
- CVSS v3.1
- 4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS
- %0,19 (yüzdelik 9)
- CWE
- CWE-667
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | — | — | 5.10.227 |
| linux-linux-kernel | 5.11 | — | 5.15.168 |
| linux-linux-kernel | 5.16 | — | 6.1.113 |
| linux-linux-kernel | 6.2 | — | 6.6.55 |
| linux-linux-kernel | 6.7 | — | 6.10.14 |
| linux-linux-kernel | 6.11 | — | 6.11.3 |