NVD / CVE Program· CNA Linux

CVE-2026-68345: arm_mpam: guard MBWU state before adding it to garbage

Noroxi assessment

Priority: Monitor (action score 0/100)

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: 0.19% (FIRST EPSS).
Fixed version: Linux Linux 977f52909c624210178a1247fab0b02b110c1106, ca1f96334267ab8d47b2c9d535cdc9920fdde269.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 977f52909c624210178a1247fab0b02b110c1106, ca1f96334267ab8d47b2c9d535cdc9920fdde269 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: guard MBWU state before adding it to garbage __destroy_component_cfg() adds each RIS mbwu_state object to the MPAM garbage list when destroying component configuration. However, mbwu_state is allocated per RIS and only for RISes with MBWU monitors. A component can therefore have comp->cfg allocated while some RISes still have ris->mbwu_state set to NULL. Passing a NULL mbwu_state to add_to_garbage() dereferences the NULL pointer inside the macro. Skip RISes that do not have an mbwu_state object before adding them to the garbage list.

—No exploit Fix available

Published: Aug 10, 2026
Updated: Aug 17, 2026
EPSS: 0.1% · 9th percentile
CWE: —

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 0 / 40 · —
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

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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.

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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
- 6.19affected
- 41e8a14950e1732af51cfec8fa09f8ded02a5ca9 and later · before ca1f96334267ab8d47b2c9d535cdc9920fdde269affected · git
- 41e8a14950e1732af51cfec8fa09f8ded02a5ca9 and later · before 977f52909c624210178a1247fab0b02b110c1106affected · git
- before 6.19not affected · semver
- 7.1.6 and later · up to and including 7.1.*not affected · semver
- 7.2 and laternot affected · original_commit_for_fix

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 7.1.6-1	7.1.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
40Plan
CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
40Plan
CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
40Plan

Published before and after this one in the same product

← EarlierCVE-2026-68342Aug 10, 2026 · ovpn: avoid putting unrelated P2P peer on socket release
0Monitor
← EarlierCVE-2026-68344Aug 10, 2026 · usb: atm: ueagle-atm: reject descriptors that confuse probe and disconnect
0Monitor
Later →CVE-2026-68346Aug 10, 2026 · ALSA: hda: cs35l41: validate and free ACPI mute object
0Monitor

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	977f52909c624210178a1247fab0b02b110c1106	Vendor (CNA)
Linux Linux	ca1f96334267ab8d47b2c9d535cdc9920fdde269	Vendor (CNA)
debian:linux	7.1.6-1 · 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.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

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

No nightly-computed relations.

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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Bug bounty scope

No known public program.

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