NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 6 fixed, 4 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN We found a few different systems hung up in writeback waiting on the same page lock, and one task waiting on the NFS_LAYOUT_DRAIN bit in pnfs_update_layout(), however the pnfs_layout_hdr's plh_outstanding count was zero. It seems most likely that this is another race between the waiter and waker similar to commit ed0172af5d6f ("SUNRPC: Fix a race to wake a sync task"). Fix it up by applying the advised barrier.
Why it matters now
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 | 5.10.124 to before 5.10.240; 5.15.49 to before 5.15.187; 5.18.6 to before 5.19 | 5.10.240, 5.15.187, 5.19 | Patch available | CNA |
| Linux | Linux | 5.19 and later | 5.10.240, 5.15.187, 6.1.144, 6.6.97, 6.12.37, 6.15.6, 6.16 | Patch available | CNA |
- Linux VendorLinux Affected 5.10.124 to before 5.10.240; 5.15.49 to before 5.15.187; 5.18.6 to before 5.19 Fixed in 5.10.240, 5.15.187, 5.19 Patch available CNA
- Linux VendorLinux Affected 5.19 and later Fixed in 5.10.240, 5.15.187, 6.1.144, 6.6.97, 6.12.37, 6.15.6, 6.16 Patch available CNA
CPE configurations NVD · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.10.124 to before 5.10.240; 5.15.49 to before 5.15.187; 5.18.6 to before 5.19; 5.19.1 to before 6.1.144; 6.2 to before 6.6.97; 6.7 to before 6.12.37; 6.13 to before 6.15.6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:-:*:*:*:*:*:* | 5.19 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* | 5.19 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:* | 5.19 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:* | 5.19 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:* | 5.19 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc7:*:*:*:*:*:* | 5.19 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc8:*:*:*:*:*:* | 5.19 rc8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* | 6.16 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:* | 6.16 rc2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.10.124 to before 5.10.240; 5.15.49 to before 5.15.187; 5.18.6 to before 5.19; 5.19.1 to before 6.1.144; 6.2 to before 6.6.97; 6.7 to before 6.12.37; 6.13 to before 6.15.6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:-:*:*:*:*:*:* Versions 5.19 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* Versions 5.19 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:* Versions 5.19 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:* Versions 5.19 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:* Versions 5.19 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc7:*:*:*:*:*:* Versions 5.19 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc8:*:*:*:*:*:* Versions 5.19 rc8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* Versions 6.16 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:* Versions 6.16 rc2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.240, 5.15.187, 5.19
- Fix · CNA Linux (Linux) Fixed in 5.10.240, 5.15.187, 6.1.144, 6.6.97, 6.12.37, 6.15.6, 6.16
Red Hat 3 advisories
- RHSA-2025:11850 Released 2025-07-28 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.64.1.el8_10, kernel-4.18.0-553.64.1.el8_10, kernel-abi-stablelists-4.18.0-553.64.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.64.1.el8_10
- RHSA-2023:7077 Released 2023-11-14 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-513.5.1.el8_9
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-513.5.1.el8_9, kernel-4.18.0-513.5.1.el8_9, kernel-abi-stablelists-4.18.0-513.5.1.el8_9 +19
- 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 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2023:7077 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:2458 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2023:7077, RHSA-2025:11850 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2023:2458 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2025:11850 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2023:2458 |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2025-38393
- 2026-10-03 Alias added: GHSA-93f5-rwwh-v8p5
References
Patch 7
- https://git.kernel.org/stable/c/08287df60bac5b008b6bcdb03053988335d3d282
- https://git.kernel.org/stable/c/8846fd02c98da8b79e6343a20e6071be6f372180
- https://git.kernel.org/stable/c/e4b13885e7ef1e64e45268feef1e5f0707c47e72
- https://git.kernel.org/stable/c/8ca65fa71024a1767a59ffbc6a6e2278af84735e
- https://git.kernel.org/stable/c/864a54c1243ed3ca60baa4bc492dede1361f4c83
- https://git.kernel.org/stable/c/1f4da20080718f258e189a2c5f515385fa393da6
- https://git.kernel.org/stable/c/c01776287414ca43412d1319d2877cbad65444ac
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- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2025-38393 · CVE Program
- CVE-2025-38393 · NVD
- FIRST EPSS
- GHSA-93f5-rwwh-v8p5 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-38393 · Red Hat security data · CC BY 4.0
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