CVE-2025-38256 — Release of Invalid Pointer or Reference in Linux

CWE-763 — Release of Invalid Pointer or Reference17 documents6 sources
Severity
5.5MEDIUMNVD
OSV5.6
EPSS
0.0%
top 95.04%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedJul 9
Latest updateNov 4

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: fix folio unpinning syzbot complains about an unmapping failure: [ 108.070381][ T14] kernel BUG at mm/gup.c:71! [ 108.070502][ T14] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP [ 108.123672][ T14] Hardware name: QEMU KVM Virtual Machine, BIOS edk2-20250221-8.fc42 02/21/2025 [ 108.127458][ T14] Workqueue: iou_exit io_ring_exit_work [ 108.174205][ T14] Call trace: [ 108.175649][ T14] sanity_check_pinned_…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel6.12 — 6.12.36+2
▶Debianlinux/linux_kernel< 6.12.37-1+1
▶CVEListV5linux/linuxa8edbb424b1391b077407c75d8f5d2ede77aa70d — 53fd75f25b223878b5fff14932e3a22f42b54f77+3
▶debiandebian/linux< linux 6.12.37-1 (forky)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

8
OSV
linux-hwe-6.14 vulnerabilities↗2025-11-04
▶
OSV
linux-gcp-6.14 vulnerabilities↗2025-10-31
▶
OSV
linux-aws-6.14 vulnerabilities↗2025-10-24
▶
OSV
linux-realtime-6.14 vulnerabilities↗2025-10-22
▶
OSV
linux-azure, linux-azure-6.14, linux-azure-nvidia-6.14 vulnerabilities↗2025-10-22
▶

📋Vendor Advisories

8
Ubuntu
Linux kernel (HWE) vulnerabilities↗2025-11-04
▶
Ubuntu
Linux kernel (GCP) vulnerabilities↗2025-10-31
▶
Ubuntu
Linux kernel (AWS) vulnerabilities↗2025-10-24
▶
Ubuntu
Linux kernel (Azure) vulnerabilities↗2025-10-22
▶
Ubuntu
Linux kernel (Real-time) vulnerabilities↗2025-10-22
▶
CVE-2025-38256 — Linux vulnerability | cvebase