CVE-2024-50006

MEDIUM EPSS 8.2%
Published Oct 21, 20241y ago · Modified Jun 17, 20261w ago
4.7 CVSS 3.1
Medium
Find Similar
Published Oct 21, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

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

CVSS Details

Base Score
4.7
Exploitability
1.0
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
8.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-667

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel* <5.10.227
linuxlinux_kernel*≥5.11  –  <5.15.168
linuxlinux_kernel*≥5.16  –  <6.1.113
linuxlinux_kernel*≥6.2  –  <6.6.55
linuxlinux_kernel*≥6.7  –  <6.10.14
linuxlinux_kernel*≥6.11  –  <6.11.3

References 14

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-355557.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-398330.html
  • git.kernel.org https://git.kernel.org/stable/c/3c46d6060d3e38de22196c1fe7706c5a3c696285
  • git.kernel.org https://git.kernel.org/stable/c/4192adefc9c570698821c5eb9873320eac2fcbf1
  • git.kernel.org https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ff
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ff
    Patch