PT-2025-25847 · Linux+5 · Linux Kernel+5

Published 2025-04-23 · Updated 2026-05-26 · CVE-2025-38073

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A race condition exists between the set blocksize and read paths in the Linux kernel, which can cause a kernel crash. This issue arises when the set blocksize function changes i blksize and the folio order in a way that conflicts with a concurrent reader. Specifically, if a reader creates an order-0 folio to read data from a disk and is then preempted, a subsequent call to set blksize can update i blksize and the minimum folio order, leading to inconsistencies when the reader resumes. To resolve this, the page cache is truncated after flushing but before updating i blksize, and both the i rwsem and invalidate lock are taken in exclusive mode for invalidations and in shared mode for read/write operations.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

NULL Pointer Dereference

Race Condition

Weakness Enumeration

CWE-476

CWE-362

Related Identifiers

BDU:2026-04474

CVE-2025-38073

ECHO-B9BF-35DB-F641

USN-7769-1

USN-7769-2

USN-7769-3

USN-7770-1

USN-7771-1

USN-7789-1

USN-7789-2

Affected Products

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Ubuntu

References · 230

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38073.json · Exploit
• https://ubuntu.com/security/CVE-2025-38151 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38038 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38099 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7771-1 · Vendor Advisory
• https://git.kernel.org/stable/c/8c5cf440a378801d313eb58be996fdc81a8878a4 · Patch
• https://ubuntu.com/security/CVE-2025-38119 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38037 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38096 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38306 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38272 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38311 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-38073 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38040 · Vendor Advisory