CVE-2025-38584padata: Fix pd UAF once and for all
Updated under an hour ago ()
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It affects Linux and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: padata: Fix pd UAF once and for all There is a race condition/UAF in padata_reorder that goes back to the initial commit. A reference count is taken at the start of the process in padata_do_parallel, and released at the end in padata_serial_worker. This reference count is (and only is) required for padata_replace to function correctly. If padata_replace is never called then there is no issue. In the function padata_reorder which serves as the core of padata, as soon as padata is added to queue->serial.list, and the associated spin lock released, that padata may be processed and the reference count on pd would go away. Fix this by getting the next padata before the squeue->serial lock is released. In order to make this possible, simplify padata_reorder by only calling it once the next padata arrives.
- CVSS
- 7.0 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from 16295bec6398a3eedc9377e1af6ff4c71b98c300 before a2048e475e22b13dc3e53d485b7e6e11464ed9a6; 16295bec6398a3eedc9377e1af6ff4c71b98c300 builds before 73f132e60857038416540c3599b1de6033d7575a; 16295bec6398a3eedc9377e1af6ff4c71b98c300 builds before 609e59193fc6d9dd323f1c6ae1fdd721f1c79680; from 16295bec6398a3eedc9377e1af6ff4c71b98c300 before a11a12a9880ab37342b73c93cfe1a3ada02ff0db; from 16295bec6398a3eedc9377e1af6ff4c71b98c300 before f231d5d001ec75f5886c02d496a4c79edc383d45; from 16295bec6398a3eedc9377e1af6ff4c71b98c300 before dbe3e911a59bda6de96e7cae387ff882c2c177fa; from 16295bec6398a3eedc9377e1af6ff4c71b98c300 before cdf79bd2e1ecb3cc75631c73d8f4149be6019a52; from 16295bec6398a3eedc9377e1af6ff4c71b98c300 before 71203f68c7749609d7fc8ae6ad054bdedeb24f91 | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
linux linux_kernel linux:linux_kernel | from 2.6.34 before 6.15.10; from 6.16 before 6.16.1 | NVD |
References
- https://git.kernel.org/stable/c/a2048e475e22b13dc3e53d485b7e6e11464ed9a6
- https://git.kernel.org/stable/c/73f132e60857038416540c3599b1de6033d7575a
- https://git.kernel.org/stable/c/609e59193fc6d9dd323f1c6ae1fdd721f1c79680
- https://git.kernel.org/stable/c/a11a12a9880ab37342b73c93cfe1a3ada02ff0db
- https://git.kernel.org/stable/c/f231d5d001ec75f5886c02d496a4c79edc383d45
- https://git.kernel.org/stable/c/dbe3e911a59bda6de96e7cae387ff882c2c177fapatch
- https://git.kernel.org/stable/c/cdf79bd2e1ecb3cc75631c73d8f4149be6019a52patch
- https://git.kernel.org/stable/c/71203f68c7749609d7fc8ae6ad054bdedeb24f91patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.