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CVE-2024-50006

ext4: fix i_data_sem unlock order in ext4_ind_migrate()

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

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 24 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-50006, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1Medium4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.19% · top 91% of all CVEs (11 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.

Affected products

  • Linux · Linux

    • affected e8238f9a8339b3578c85e4192a7a23bc2bdc0333 – < 4192adefc9c570698821c5eb9873320eac2fcbf1
    • affected e8238f9a8339b3578c85e4192a7a23bc2bdc0333 – < 3c46d6060d3e38de22196c1fe7706c5a3c696285
    • affected e8238f9a8339b3578c85e4192a7a23bc2bdc0333 – < 53b1999cfd2c7addf2e581a32865fe8835467b44
    • affected e8238f9a8339b3578c85e4192a7a23bc2bdc0333 – < ef05572da0c0eb89614ed01cc17d3c882bdbd1ff
    • affected e8238f9a8339b3578c85e4192a7a23bc2bdc0333 – < 9fedf51ab8cf7b69bff08f37fe0989fec7f5d870
    • affected e8238f9a8339b3578c85e4192a7a23bc2bdc0333 – < d43776b907659affef1de888525847d64b244194
    • affected e8238f9a8339b3578c85e4192a7a23bc2bdc0333 – < 6252cb6bde7fc76cb8dcb49d1def7c326b190820
    • affected e8238f9a8339b3578c85e4192a7a23bc2bdc0333 – < d58a00e981d3118b91d503da263e640b7cde6729
    • affected e8238f9a8339b3578c85e4192a7a23bc2bdc0333 – < cc749e61c011c255d81b192a822db650c68b313f

  • Linux · Linux

    • affected 3.10
    • unaffected < 3.10
    • unaffected 4.19.323 – ≤ 4.19.*
    • unaffected 5.4.285 – ≤ 5.4.*
    • unaffected 5.10.227 – ≤ 5.10.*
    • unaffected 5.15.168 – ≤ 5.15.*
    • unaffected 6.1.113 – ≤ 6.1.*
    • unaffected 6.6.55 – ≤ 6.6.*
    • unaffected 6.10.14 – ≤ 6.10.*
    • unaffected 6.11.3 – ≤ 6.11.*
    • unaffected 6.12 – ≤ *

References

References14

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .