ext4: don't set up encryption key during jbd2 transaction
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 3 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.00103 1st percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.163, 5.15.87, 6.0.18 +2Red Hat: 1 advisoryRed Hat: 3 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.10 and later | 5.10.163, 5.15.87, 6.0.18, 6.1.4, 6.2 | Patch available | CNA |
- Linux VendorLinux Affected 5.10 and later Fixed in 5.10.163, 5.15.87, 6.0.18, 6.1.4, 6.2 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.10.1 to before 5.10.163; 5.11 to before 5.15.87; 5.16 to before 6.0.18; 6.1 to before 6.1.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:* | 5.10 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:* | 5.10 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc5:*:*:*:*:*:* | 5.10 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc6:*:*:*:*:*:* | 5.10 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc7:*:*:*:*:*:* | 5.10 rc7 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.10.1 to before 5.10.163; 5.11 to before 5.15.87; 5.16 to before 6.0.18; 6.1 to before 6.1.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:* Versions 5.10 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:* Versions 5.10 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc5:*:*:*:*:*:* Versions 5.10 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc6:*:*:*:*:*:* Versions 5.10 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc7:*:*:*:*:*:* Versions 5.10 rc7 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.163, 5.15.87, 6.0.18, 6.1.4, 6.2
Red Hat 1 advisory
- RHSA-2023:2458 Released 2023-05-09 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-284.11.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.11.1.el9_2, kernel-64k-devel-5.14.0-284.11.1.el9_2 +10
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.0.0-284.11.1.el9_2, kernel-5.14.0-284.11.1.el9_2, kernel-64k-5.14.0-284.11.1.el9_2 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-284.11.1.el9_2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:2458 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2023:2458 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2023:2458 |
Not affected: 3 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2022-50436
- 2026-10-03 Alias added: GHSA-h235-mqh4-6cp2
References
Patch 5
- https://git.kernel.org/stable/c/23ad034760dd38e12b0e0e1b28b9629f330810a1
- https://git.kernel.org/stable/c/6220ec405571ded17efedc56587190b542adf246
- https://git.kernel.org/stable/c/206dd3acfb9bca54a25b228c7c7c2257eedde09b
- https://git.kernel.org/stable/c/1ba993208bcfd691e241483420a2a761d3f15750
- https://git.kernel.org/stable/c/4c0d5778385cb3618ff26a561ce41de2b7d9de70
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Sources
- CVE-2022-50436 · CVE Program
- CVE-2022-50436 · NVD
- FIRST EPSS
- GHSA-h235-mqh4-6cp2 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-50436 · Red Hat security data · CC BY 4.0
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