CVE-2025-39902

In the Linux kernel, the following vulnerability has been resolved: mm/slub: avoid accessing metadata when pointer is invalid in object_err() object_err() reports details of an object for further debugging, such as the freelist pointer, redzone, etc. However, if the pointer is invalid, attempting to access object metadata can lead to a crash since it does not point to a valid object. One known path to the crash is when alloc_consistency_checks() determines the pointer to the allocated object is invalid because of a freelist corruption, and calls object_err() to report it. The debug code should report and handle the corruption gracefully and not crash in the process. In case the pointer is NULL or check_valid_pointer() returns false for the pointer, only print the pointer value and skip accessing metadata.
Configurations

Configuration 1 (hide)

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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

16 Jan 2026, 19:30

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/0ef7058b4dc6fcef622ac23b45225db57f17b83f - () https://git.kernel.org/stable/c/0ef7058b4dc6fcef622ac23b45225db57f17b83f - Patch
References () https://git.kernel.org/stable/c/1f0797f17927b5cad0fb7eced422f9a7c30a3191 - () https://git.kernel.org/stable/c/1f0797f17927b5cad0fb7eced422f9a7c30a3191 - Patch
References () https://git.kernel.org/stable/c/3baa1da473e6e50281324ff1d332d1a07a3bb02e - () https://git.kernel.org/stable/c/3baa1da473e6e50281324ff1d332d1a07a3bb02e - Patch
References () https://git.kernel.org/stable/c/7e287256904ee796c9477e3ec92b07f236481ef3 - () https://git.kernel.org/stable/c/7e287256904ee796c9477e3ec92b07f236481ef3 - Patch
References () https://git.kernel.org/stable/c/872f2c34ff232af1e65ad2df86d61163c8ffad42 - () https://git.kernel.org/stable/c/872f2c34ff232af1e65ad2df86d61163c8ffad42 - Patch
References () https://git.kernel.org/stable/c/b4efccec8d06ceb10a7d34d7b1c449c569d53770 - () https://git.kernel.org/stable/c/b4efccec8d06ceb10a7d34d7b1c449c569d53770 - Patch
References () https://git.kernel.org/stable/c/dda6ec365ab04067adae40ef17015db447e90736 - () https://git.kernel.org/stable/c/dda6ec365ab04067adae40ef17015db447e90736 - Patch
References () https://git.kernel.org/stable/c/f66012909e7bf383fcdc5850709ed5716073fdc4 - () https://git.kernel.org/stable/c/f66012909e7bf383fcdc5850709ed5716073fdc4 - Patch
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - Third Party Advisory
CPE cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*
CWE CWE-476
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 5.5
First Time Linux
Debian
Debian debian Linux
Linux linux Kernel

03 Nov 2025, 18:16

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html -
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html -

01 Oct 2025, 08:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-10-01 08:15

Updated : 2026-01-16 19:30


NVD link : CVE-2025-39902

Mitre link : CVE-2025-39902

CVE.ORG link : CVE-2025-39902


JSON object : View

Products Affected

debian

  • debian_linux

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference