In the Linux kernel, the following vulnerability has been resolved:

ext4: don't set up encryption key during jbd2 transaction

Commit a80f7fcf1867 ("ext4: fixup ext4_fc_track_* functions' signature")
extended the scope of the transaction in ext4_unlink() too far, making
it include the call to ext4_find_entry(). However, ext4_find_entry()
can deadlock when called from within a transaction because it may need
to set up the directory's encryption key.

Fix this by restoring the transaction to its original scope.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00014.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
a80f7fcf18672ae4971a6b713b58c0d389aa99fe affected < 23ad034760dd38e12b0e0e1b28b9629f330810a1
a80f7fcf18672ae4971a6b713b58c0d389aa99fe affected < 6220ec405571ded17efedc56587190b542adf246
a80f7fcf18672ae4971a6b713b58c0d389aa99fe affected < 206dd3acfb9bca54a25b228c7c7c2257eedde09b
a80f7fcf18672ae4971a6b713b58c0d389aa99fe affected < 1ba993208bcfd691e241483420a2a761d3f15750
a80f7fcf18672ae4971a6b713b58c0d389aa99fe affected < 4c0d5778385cb3618ff26a561ce41de2b7d9de70
Linux Linux affected
Version Status Constraints
5.10 affected —
0 unaffected < 5.10
5.10.163 unaffected ≤ 5.10.*
5.15.87 unaffected ≤ 5.15.*
6.0.18 unaffected ≤ 6.0.*
6.1.4 unaffected ≤ 6.1.*
6.2 unaffected ≤ *

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:rc7:*:*:*:*:*:*

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/1ba993208bcfd691e241483420a2a761d3f15750 cve-icon cve-icon
https://git.kernel.org/stable/c/206dd3acfb9bca54a25b228c7c7c2257eedde09b cve-icon cve-icon
https://git.kernel.org/stable/c/23ad034760dd38e12b0e0e1b28b9629f330810a1 cve-icon cve-icon
https://git.kernel.org/stable/c/4c0d5778385cb3618ff26a561ce41de2b7d9de70 cve-icon cve-icon
https://git.kernel.org/stable/c/6220ec405571ded17efedc56587190b542adf246 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025100159-CVE-2022-50436-ad37@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50436 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50436 cve-icon
History

Wed, 21 Jan 2026 21:45:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10:rc7:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Thu, 02 Oct 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Thu, 02 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Wed, 01 Oct 2025 12:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ext4: don't set up encryption key during jbd2 transaction Commit a80f7fcf1867 ("ext4: fixup ext4_fc_track_* functions' signature") extended the scope of the transaction in ext4_unlink() too far, making it include the call to ext4_find_entry(). However, ext4_find_entry() can deadlock when called from within a transaction because it may need to set up the directory's encryption key. Fix this by restoring the transaction to its original scope.
Title ext4: don't set up encryption key during jbd2 transaction
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-10-01T11:42:13.538Z

Reserved: 2025-09-17T14:53:07.009Z

Link: CVE-2022-50436

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2025-10-01T12:15:35.570

Modified: 2026-01-21T21:38:15.203

Link: CVE-2022-50436

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-01T00:00:00Z

Links: CVE-2022-50436 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-02T08:40:03Z

Weaknesses