NVD / CVE Program· CNA Linux

CVE-2026-53278: arm_mpam: Check whether the config array is allocated before destroying it

MediumCVSS 5.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.14% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 6ccbb613b42a1f1ba7bfd547a148f644a902a25c, 8eb6dc76eeae5302c0d885906a0e469ef9630a59.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 6ccbb613b42a1f1ba7bfd547a148f644a902a25c, 8eb6dc76eeae5302c0d885906a0e469ef9630a59 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: arm_mpam: Check whether the config array is allocated before destroying it __destroy_component_cfg() is called to free the configuration array. It uses the embedded 'garbage' structure, which means the array has to be allocated. If __destroy_component_cfg() is called from mpam_disable() before the configuration was ever allocated, then a NULL pointer is dereferenced. Check for this case and return early if the configuration is not allocated. __destroy_component_cfg() also frees the mbwu_state as this is allocated by __allocate_component_cfg(). As the mbwu_state is allocated after comp->cfg is set, and is also under mpam_list_lock, only the first pointer needs checking.

BDU:2026-14074

Published: Jun 26, 2026
Updated: Nov 6, 2026
EPSS: 0.1% · 3th percentile
CWE: CWE-476

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

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No public exploit code on record
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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

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
- 6.19affected
- 3bd04fe7d807bbdcfe75b29ca82fae4e2d7dc524 and later · before 8eb6dc76eeae5302c0d885906a0e469ef9630a59affected · git
- 3bd04fe7d807bbdcfe75b29ca82fae4e2d7dc524 and later · before 6ccbb613b42a1f1ba7bfd547a148f644a902a25caffected · git
- before 6.19not affected · semver
- 7.0.10 and later · up to and including 7.0.*not affected · semver
- 7.1 and laternot affected · original_commit_for_fix

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel6.19 and later · before 7.0.10
linux linux kernel7.1

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:14	linux	before 7.0.10-1	7.0.10-1

Same product

linux: all records

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Published before and after this one in the same product

← EarlierCVE-2026-53322Jun 26, 2026 · vfio/pci: Clean up DMABUFs before disabling function
35Monitor
← EarlierCVE-2026-53323Jun 26, 2026 · net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops
22Monitor
Later →CVE-2026-53279Jun 26, 2026 · drm/gma500/oaktrail_lvds: fix hang on init failure
22Monitor

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
Linux Linux	6ccbb613b42a1f1ba7bfd547a148f644a902a25c	Vendor (CNA)
Linux Linux	8eb6dc76eeae5302c0d885906a0e469ef9630a59	Vendor (CNA)
debian:linux	7.0.10-1 · Debian:14	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.