🛡️ CVE-2026-46308 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()

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

pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()

In scpsys_get_bus_protection_legacy(), of_find_node_with_property()

returns a device node with its reference count incremented. The function

then calls of_node_put(node) before checking whether

syscon_regmap_lookup_by_phandle() returns an error. If an error occurs,

dev_err_probe() dereferences the node pointer to print diagnostic

information, but the node memory may have already been freed due to the

earlier of_node_put(), leading to a use-after-free vulnerability.

Fix this by moving the of_node_put() call after the error check, ensuring

the node is still valid when accessed in the error path.

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 high, integrity high, availability high.

Affected software

CVE-2026-46308 is recorded against 3 packages.

  • kernel (from 6.19.0 up to 7.0.7)
  • 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)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2026-46308 on other distributions

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

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 6.19.0 7.0.7
linux-kernel — —
unknown — —

Similar Threats

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