🛡️ CVE-2026-46278 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

drm/imagination: Fix segfault when updating ftrace mask

In the Linux kernel, the following vulnerability has been resolved:

drm/imagination: Fix segfault when updating ftrace mask

Fix invalid data access by passing right data for debugfs entry.

[ 171.549793] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000

[ 171.559248] Mem abort info:

[ 171.562173] ESR = 0x0000000096000044

[ 171.566227] EC = 0x25: DABT (current EL), IL = 32 bits

[ 171.573108] SET = 0, FnV = 0

[ 171.576448] EA = 0, S1PTW = 0

[ 171.579745] FSC = 0x04: level 0 translation fault

[ 171.584760] Data abort info:

[ 171.588012] ISV = 0, ISS = 0x00000044, ISS2 = 0x00000000

[ 171.593734] CM = 0, WnR = 1, TnD = 0, TagAccess = 0

[ 171.598962] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0

[ 171.604471] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000083837000

[ 171.611358] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000

[ 171.618500] Internal error: Oops: 0000000096000044 [#1] SMP

[ 171.624222] Modules linked in: powervr drm_shmem_helper drm_gpuvm...

[ 171.656580] CPU: 0 UID: 0 PID: 549 Comm: bash Not tainted 7.0.0-rc2-g730b257ba723-dirty #13 PREEMPT

[ 171.665773] Hardware name: BeagleBoard.org BeaglePlay (DT)

[ 171.671296] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)

[ 171.678306] pc : pvr_fw_trace_mask_set+0x78/0x154 [powervr]

[ 171.683959] lr : pvr_fw_trace_mask_set+0x4c/0x154 [powervr]

[ 171.689593] sp : ffff8000835ebb90

[ 171.692929] x29: ffff8000835ebc00 x28: ffff000005c60f80 x27: 0000000000000000

[ 171.700130] x26: 0000000000000000 x25: ffff00000504af28 x24: 0000000000000000

[ 171.707324] x23: ffff00000504af50 x22: 0000000000000203 x21: 0000000000000000

[ 171.714518] x20: ffff000005c44a80 x19: ffff000005c457b8 x18: 0000000000000000

[ 171.721715] x17: 0000000000000000 x16: 0000000000000000 x15: 0000aaaae8887580

[ 171.728908] x14: 0000000000000000 x13: 0000000000000000 x12: ffff8000835ebc30

[ 171.736095] x11: ffff00000504af2a x10: ffff00008504af29 x9 : 0fffffffffffffff

[ 171.743286] x8 : ffff8000835ebbf8 x7 : 0000000000000000 x6 : 000000000000002a

[ 171.750479] x5 : ffff00000504af2e x4 : 0000000000000000 x3 : 0000000000000010

[ 171.757674] x2 : 0000000000000203 x1 : 0000000000000000 x0 : ffff8000835ebba0

[ 171.764871] Call trace:

[ 171.767342] pvr_fw_trace_mask_set+0x78/0x154 [powervr] (P)

[ 171.772984] simple_attr_write_xsigned.isra.0+0xe0/0x19c

[ 171.778341] simple_attr_write+0x18/0x24

[ 171.782296] debugfs_attr_write+0x50/0x98

[ 171.786341] full_proxy_write+0x6c/0xa8

[ 171.790208] vfs_write+0xd4/0x350

[ 171.793561] ksys_write+0x70/0x108

[ 171.796995] __arm64_sys_write+0x1c/0x28

[ 171.800952] invoke_syscall+0x48/0x10c

[ 171.804740] el0_svc_common.constprop.0+0x40/0xe0

[ 171.809487] do_el0_svc+0x1c/0x28

[ 171.812834] el0_svc+0x34/0x108

[ 171.816013] el0t_64_sync_handler+0xa0/0xe4

[ 171.820237] el0t_64_sync+0x198/0x19c

[ 171.823939] Code: 32000262 b90ac293 1a931056 9134e293 (b9000036)

[ 171.830073] ---[ end trace 0000000000000000 ]---

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2026-46278 is recorded against 3 packages.

  • kernel (from 7.0.0 up to 7.0.4)
  • linux-kernel
  • unknown

Timeline and source

Published on 8 June 2026 and last revised on 25 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2026-46278 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2026-06-08
Updated 2026-08-12
Modified 2026-07-25

Affected Packages

Software From version Fixed in
kernel 7.0.0 7.0.4
linux-kernel — —
unknown — —

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