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CVE-2025-40247· NVD / CVE Program· CNA Linux

drm/msm: Fix pgtable prealloc error path

In the Linux kernel, the following vulnerability has been resolved: drm/msm: Fix pgtable prealloc error path The following splat was reported: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010 Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=00000008d0fd8000 [0000000000000010] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000096000004 [#1] SMP CPU: 5 UID: 1000 PID: 149076 Comm: Xwayland Tainted: G S 6.16.0-rc2-00809-g0b6974bb4134-dirty #367 PREEMPT Tainted: [S]=CPU_OUT_OF_SPEC Hardware name: Qualcomm Technologies, Inc. SM8650 HDK (DT) pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : build_detached_freelist+0x28/0x224 lr : kmem_cache_free_bulk.part.0+0x38/0x244 sp : ffff000a508c7a20 x29: ffff000a508c7a20 x28: ffff000a508c7d50 x27: ffffc4e49d16f350 x26: 0000000000000058 x25: 00000000fffffffc x24: 0000000000000000 x23: ffff00098c4e1450 x22: 00000000fffffffc x21: 0000000000000000 x20: ffff000a508c7af8 x19: 0000000000000002 x18: 00000000000003e8 x17: ffff000809523850 x16: ffff000809523820 x15: 0000000000401640 x14: ffff000809371140 x13: 0000000000000130 x12: ffff0008b5711e30 x11: 00000000001058fa x10: 0000000000000a80 x9 : ffff000a508c7940 x8 : ffff000809371ba0 x7 : 781fffe033087fff x6 : 0000000000000000 x5 : ffff0008003cd000 x4 : 781fffe033083fff x3 : ffff000a508c7af8 x2 : fffffdffc0000000 x1 : 0001000000000000 x0 : ffff0008001a6a00 Call trace: build_detached_freelist+0x28/0x224 (P) kmem_cache_free_bulk.part.0+0x38/0x244 kmem_cache_free_bulk+0x10/0x1c msm_iommu_pagetable_prealloc_cleanup+0x3c/0xd0 msm_vma_job_free+0x30/0x240 msm_ioctl_vm_bind+0x1d0/0x9a0 drm_ioctl_kernel+0x84/0x104 drm_ioctl+0x358/0x4d4 __arm64_sys_ioctl+0x8c/0xe0 invoke_syscall+0x44/0x100 el0_svc_common.constprop.0+0x3c/0xe0 do_el0_svc+0x18/0x20 el0_svc+0x30/0x100 el0t_64_sync_handler+0x104/0x130 el0t_64_sync+0x170/0x174 Code: aa0203f5 b26287e2 f2dfbfe2 aa0303f4 (f8737ab6) ---[ end trace 0000000000000000 ]--- Since msm_vma_job_free() is called directly from the ioctl, this looks like an error path cleanup issue. Which I think results from prealloc_cleanup() called without a preceding successful prealloc_allocate() call. So handle that case better. Patchwork: https://patchwork.freedesktop.org/patch/678677/

—No exploit Fix available
Published
Dec 4, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 7th percentile
CWE
—
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CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Affected systems

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.12affected
    • 0cf6c71d70d8aa39b8fd0e39c9009602a0e0d300 and later · before b865da18b6cb878f33b5920693d03f23b9c4d1a3affected · git
    • 0cf6c71d70d8aa39b8fd0e39c9009602a0e0d300 and later · before 830d68f2cb8ab6fb798bb9555016709a9e012af0affected · git
    • before 3.12not affected · semver
    • 6.17.10 and later · up to and including 6.17.*not affected · semver
    • 6.18 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxall versions—
Debian:14linuxbefore 6.17.10-16.17.10-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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  • CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux830d68f2cb8ab6fb798bb9555016709a9e012af0Vendor (CNA)
Linux Linuxb865da18b6cb878f33b5920693d03f23b9c4d1a3Vendor (CNA)
debian:linux6.17.10-1 · Debian:14Package registry (OSV)

Exploit status

No known public exploit

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Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

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Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

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—

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Change log

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References

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