AZL-68019
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-68019.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-68019
- Upstream
- Published
- 2025-10-01T08:15:32Z
- Modified
- 2026-04-01T05:21:50Z
- Summary
- CVE-2025-39902 affecting package kernel for versions less than 6.6.112.1-1
- Details
-
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.
- References