{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-40225", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.180Z", "datePublished": "2025-12-04T15:31:17.057Z", "dateUpdated": "2026-05-11T21:45:12.887Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:45:12.887Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix kernel panic on partial unmap of a GPU VA region\n\nThis commit address a kernel panic issue that can happen if Userspace\ntries to partially unmap a GPU virtual region (aka drm_gpuva).\nThe VM_BIND interface allows partial unmapping of a BO.\n\nPanthor driver pre-allocates memory for the new drm_gpuva structures\nthat would be needed for the map/unmap operation, done using drm_gpuvm\nlayer. It expected that only one new drm_gpuva would be needed on umap\nbut a partial unmap can require 2 new drm_gpuva and that's why it\nended up doing a NULL pointer dereference causing a kernel panic.\n\nFollowing dump was seen when partial unmap was exercised.\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000078\n Mem abort info:\n ESR = 0x0000000096000046\n EC = 0x25: DABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x06: level 2 translation fault\n Data abort info:\n ISV = 0, ISS = 0x00000046, ISS2 = 0x00000000\n CM = 0, WnR = 1, TnD = 0, TagAccess = 0\n GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n user pgtable: 4k pages, 48-bit VAs, pgdp=000000088a863000\n [000000000000078] pgd=080000088a842003, p4d=080000088a842003, pud=0800000884bf5003, pmd=0000000000000000\n Internal error: Oops: 0000000096000046 [#1] PREEMPT SMP\n \n pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : panthor_gpuva_sm_step_remap+0xe4/0x330 [panthor]\n lr : panthor_gpuva_sm_step_remap+0x6c/0x330 [panthor]\n sp : ffff800085d43970\n x29: ffff800085d43970 x28: ffff00080363e440 x27: ffff0008090c6000\n x26: 0000000000000030 x25: ffff800085d439f8 x24: ffff00080d402000\n x23: ffff800085d43b60 x22: ffff800085d439e0 x21: ffff00080abdb180\n x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000010\n x17: 6e656c202c303030 x16: 3666666666646466 x15: 393d61766f69202c\n x14: 312d3d7361203a70 x13: 303030323d6e656c x12: ffff80008324bf58\n x11: 0000000000000003 x10: 0000000000000002 x9 : ffff8000801a6a9c\n x8 : ffff00080360b300 x7 : 0000000000000000 x6 : 000000088aa35fc7\n x5 : fff1000080000000 x4 : ffff8000842ddd30 x3 : 0000000000000001\n x2 : 0000000100000000 x1 : 0000000000000001 x0 : 0000000000000078\n Call trace:\n panthor_gpuva_sm_step_remap+0xe4/0x330 [panthor]\n op_remap_cb.isra.22+0x50/0x80\n __drm_gpuvm_sm_unmap+0x10c/0x1c8\n drm_gpuvm_sm_unmap+0x40/0x60\n panthor_vm_exec_op+0xb4/0x3d0 [panthor]\n panthor_vm_bind_exec_sync_op+0x154/0x278 [panthor]\n panthor_ioctl_vm_bind+0x160/0x4a0 [panthor]\n drm_ioctl_kernel+0xbc/0x138\n drm_ioctl+0x240/0x500\n __arm64_sys_ioctl+0xb0/0xf8\n invoke_syscall+0x4c/0x110\n el0_svc_common.constprop.1+0x98/0xf8\n do_el0_svc+0x24/0x38\n el0_svc+0x40/0xf8\n el0t_64_sync_handler+0xa0/0xc8\n el0t_64_sync+0x174/0x178" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/panthor/panthor_mmu.c" ], "versions": [ { "version": "647810ec247641eb5aec8caef818919a4518a0b1", "lessThan": "efe6dced3512066ebee2cf7c4c38d1c99625814e", "status": "affected", "versionType": "git" }, { "version": "647810ec247641eb5aec8caef818919a4518a0b1", "lessThan": "e9c19d19dd7e08db89cead5b0337c18590dc6645", "status": "affected", "versionType": "git" }, { "version": "647810ec247641eb5aec8caef818919a4518a0b1", "lessThan": "4eabd0d8791eaf9a7b114ccbf56eb488aefe7b1f", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/panthor/panthor_mmu.c" ], "versions": [ { "version": "6.10", "status": "affected" }, { "version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.56", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17.6", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.12.56" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.17.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.18" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/efe6dced3512066ebee2cf7c4c38d1c99625814e" }, { "url": "https://git.kernel.org/stable/c/e9c19d19dd7e08db89cead5b0337c18590dc6645" }, { "url": "https://git.kernel.org/stable/c/4eabd0d8791eaf9a7b114ccbf56eb488aefe7b1f" } ], "title": "drm/panthor: Fix kernel panic on partial unmap of a GPU VA region", "x_generator": { "engine": "bippy-1.2.0" } } } }