CVE-2025-39902High· 7.1▾ TwilightIn 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
0.2% → 0.2%
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.
Linux >= 81819f0fc8285a2a5a921c019e3e3d7b6169d225 < 872f2c34ff232af1e65ad2df86d61163c8ffad42Linux >= 81819f0fc8285a2a5a921c019e3e3d7b6169d225 < f66012909e7bf383fcdc5850709ed5716073fdc4Linux >= 81819f0fc8285a2a5a921c019e3e3d7b6169d225 < 7e287256904ee796c9477e3ec92b07f236481ef3Linux >= 81819f0fc8285a2a5a921c019e3e3d7b6169d225 < 1f0797f17927b5cad0fb7eced422f9a7c30a3191Linux >= 81819f0fc8285a2a5a921c019e3e3d7b6169d225 < 0ef7058b4dc6fcef622ac23b45225db57f17b83fLinux >= 81819f0fc8285a2a5a921c019e3e3d7b6169d225 < dda6ec365ab04067adae40ef17015db447e90736Linux >= 81819f0fc8285a2a5a921c019e3e3d7b6169d225 < 3baa1da473e6e50281324ff1d332d1a07a3bb02eLinux >= 81819f0fc8285a2a5a921c019e3e3d7b6169d225 < b4efccec8d06ceb10a7d34d7b1c449c569d53770Linux 2.6.22Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-99118Nonedrm/i915/dmc: Harden DMC firmware payload parsing
CVE-2026-99117Nonenet: bridge: mcast: don't truncate the port group walk on teardown
CVE-2026-99121Noneipv4: avoid divide by zero in fib_rebalance
CVE-2026-99120NoneKVM: x86/mmu: Cope with the SS bit being set in #NPF exit codes
CVE-2026-99119Nonedrm/amdgpu/userq: actually validate userq BOs
CVE-2026-99123Nonevsock/virtio: validate packet source for connected sockets