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CVE-2025-40225— drm/panthor: Fix kernel panic on partial unmap of a GPU VA region

EPSS 0.02% · P6
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I. Basic Information for CVE-2025-40225

Vulnerability Information
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Vulnerability Title
drm/panthor: Fix kernel panic on partial unmap of a GPU VA region
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix kernel panic on partial unmap of a GPU VA region This commit address a kernel panic issue that can happen if Userspace tries to partially unmap a GPU virtual region (aka drm_gpuva). The VM_BIND interface allows partial unmapping of a BO. Panthor driver pre-allocates memory for the new drm_gpuva structures that would be needed for the map/unmap operation, done using drm_gpuvm layer. It expected that only one new drm_gpuva would be needed on umap but a partial unmap can require 2 new drm_gpuva and that's why it ended up doing a NULL pointer dereference causing a kernel panic. Following dump was seen when partial unmap was exercised. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000078 Mem abort info: ESR = 0x0000000096000046 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000046, ISS2 = 0x00000000 CM = 0, WnR = 1, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=000000088a863000 [000000000000078] pgd=080000088a842003, p4d=080000088a842003, pud=0800000884bf5003, pmd=0000000000000000 Internal error: Oops: 0000000096000046 [#1] PREEMPT SMP <snip> pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : panthor_gpuva_sm_step_remap+0xe4/0x330 [panthor] lr : panthor_gpuva_sm_step_remap+0x6c/0x330 [panthor] sp : ffff800085d43970 x29: ffff800085d43970 x28: ffff00080363e440 x27: ffff0008090c6000 x26: 0000000000000030 x25: ffff800085d439f8 x24: ffff00080d402000 x23: ffff800085d43b60 x22: ffff800085d439e0 x21: ffff00080abdb180 x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000010 x17: 6e656c202c303030 x16: 3666666666646466 x15: 393d61766f69202c x14: 312d3d7361203a70 x13: 303030323d6e656c x12: ffff80008324bf58 x11: 0000000000000003 x10: 0000000000000002 x9 : ffff8000801a6a9c x8 : ffff00080360b300 x7 : 0000000000000000 x6 : 000000088aa35fc7 x5 : fff1000080000000 x4 : ffff8000842ddd30 x3 : 0000000000000001 x2 : 0000000100000000 x1 : 0000000000000001 x0 : 0000000000000078 Call trace: panthor_gpuva_sm_step_remap+0xe4/0x330 [panthor] op_remap_cb.isra.22+0x50/0x80 __drm_gpuvm_sm_unmap+0x10c/0x1c8 drm_gpuvm_sm_unmap+0x40/0x60 panthor_vm_exec_op+0xb4/0x3d0 [panthor] panthor_vm_bind_exec_sync_op+0x154/0x278 [panthor] panthor_ioctl_vm_bind+0x160/0x4a0 [panthor] drm_ioctl_kernel+0xbc/0x138 drm_ioctl+0x240/0x500 __arm64_sys_ioctl+0xb0/0xf8 invoke_syscall+0x4c/0x110 el0_svc_common.constprop.1+0x98/0xf8 do_el0_svc+0x24/0x38 el0_svc+0x40/0xf8 el0t_64_sync_handler+0xa0/0xc8 el0t_64_sync+0x174/0x178
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于GPU VA区域部分取消映射处理不当，可能导致内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 647810ec247641eb5aec8caef818919a4518a0b1 ~ efe6dced3512066ebee2cf7c4c38d1c99625814e -
LinuxLinux 6.10 -

II. Public POCs for CVE-2025-40225

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III. Intelligence Information for CVE-2025-40225

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Same Patch Batch · Linux · 2025-12-04 · 53 CVEs total

CVE-2025-40230mm: prevent poison consumption when splitting THP
CVE-2025-40214af_unix: Initialise scc_index in unix_add_edge().
CVE-2025-40215xfrm: delete x->tunnel as we delete x
CVE-2025-40220fuse: fix livelock in synchronous file put from fuseblk workers
CVE-2025-40217pidfs: validate extensible ioctls
CVE-2025-40218mm/damon/vaddr: do not repeat pte_offset_map_lock() until success
CVE-2025-40219PCI/IOV: Fix race between SR-IOV enable/disable and hotplug
CVE-2025-40216io_uring/rsrc: don't rely on user vaddr alignment
CVE-2025-40228mm/damon/sysfs: catch commit test ctx alloc failure
CVE-2025-40229mm/damon/core: fix potential memory leak by cleaning ops_filter in damon_destroy_scheme
CVE-2025-40227mm/damon/sysfs: dealloc commit test ctx always
CVE-2025-40231vsock: fix lock inversion in vsock_assign_transport()
CVE-2025-40232rv: Fully convert enabled_monitors to use list_head as iterator
CVE-2025-40233ocfs2: clear extent cache after moving/defragmenting extents
CVE-2025-40234platform/x86: alienware-wmi-wmax: Fix NULL pointer dereference in sleep handlers
CVE-2025-40236virtio-net: zero unused hash fields
CVE-2025-40235btrfs: directly free partially initialized fs_info in btrfs_check_leaked_roots()
CVE-2025-40237fs/notify: call exportfs_encode_fid with s_umount
CVE-2025-40238net/mlx5: Fix IPsec cleanup over MPV device
CVE-2025-40239net: phy: micrel: always set shared->phydev for LAN8814

Showing top 20 of 53 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40225

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