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NVD / CVE Program· CNA Linux

CVE-2026-72181: mips: sched: Fix CPUMASK_OFFSTACK memory corruption

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.16% (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 15ba8053fe4162c933855f1676fb321cdb6251c7, 1caee6e084a96ada94658f261ced377d85af3f03, 2f7730c03a9deea3ba7a1c980070d363b4ea2046.

Low priority for now. Upgrade to Linux Linux 15ba8053fe4162c933855f1676fb321cdb6251c7, 1caee6e084a96ada94658f261ced377d85af3f03, 2f7730c03a9deea3ba7a1c980070d363b4ea2046 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: mips: sched: Fix CPUMASK_OFFSTACK memory corruption This patch addresses a critical memory management flaw. When CONFIG_CPUMASK_OFFSTACK is enabled, cpumask_var_t is a pointer. Consequently, sizeof(new_mask) evaluates to the pointer size, causing copy_from_user() to clobber the mask pointer. Furthermore, the old logic performed copy_from_user() before allocating the mask. Fix this by allocating new_mask first. To handle variable-sized user masks correctly, use cpumask_size() to truncate overly large user masks or pad undersized masks with zeros before copying the data directly into the allocated buffer.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 19, 2026
EPSS
0.1% · 5th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-72181

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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

    • 2.6.23affected
    • 295cbf6d63165fe4253cf1d9ceadcda47a318b48 and later · before 2f7730c03a9deea3ba7a1c980070d363b4ea2046affected · git
    • 295cbf6d63165fe4253cf1d9ceadcda47a318b48 and later · before d20ee42f8226607b5693b2bc2f115ca2d270221aaffected · git
    • 295cbf6d63165fe4253cf1d9ceadcda47a318b48 and later · before 15ba8053fe4162c933855f1676fb321cdb6251c7affected · git
    • 295cbf6d63165fe4253cf1d9ceadcda47a318b48 and later · before 3446ffb5d03c36f9ce88ede7ca5be319a2968d96affected · git
    • 295cbf6d63165fe4253cf1d9ceadcda47a318b48 and later · before 87a56c1e8e36d06ebe8640432f911538ded7827daffected · git
    • 295cbf6d63165fe4253cf1d9ceadcda47a318b48 and later · before 1caee6e084a96ada94658f261ced377d85af3f03affected · git
    • 295cbf6d63165fe4253cf1d9ceadcda47a318b48 and later · before a1dd41d00c57efb1fbc6f361c5f48c9d00cca51caffected · git
    • 295cbf6d63165fe4253cf1d9ceadcda47a318b48 and later · before 98e37db4a34d3af3fb2f4648295c25b5e40b20e3affected · git
    • before 2.6.23not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

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-2026-72179Aug 15, 2026 · riscv: cacheinfo: Fix node reference leak in populate_cache_leaves
    0Monitor
  • ← EarlierCVE-2026-72180Aug 15, 2026 · mm/huge_memory: preserve pmd_swp_uffd_wp on device-private PMD downgrade
    0Monitor
  • Later →CVE-2026-72182Aug 15, 2026 · power: supply: charger-manager: fix refcount leak in is_full_charged()
    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 / packageFixed versionSource
Linux Linux15ba8053fe4162c933855f1676fb321cdb6251c7Vendor (CNA)
Linux Linux1caee6e084a96ada94658f261ced377d85af3f03Vendor (CNA)
Linux Linux2f7730c03a9deea3ba7a1c980070d363b4ea2046Vendor (CNA)
Linux Linux3446ffb5d03c36f9ce88ede7ca5be319a2968d96Vendor (CNA)
Linux Linux87a56c1e8e36d06ebe8640432f911538ded7827dVendor (CNA)
Linux Linux98e37db4a34d3af3fb2f4648295c25b5e40b20e3Vendor (CNA)
Linux Linuxa1dd41d00c57efb1fbc6f361c5f48c9d00cca51cVendor (CNA)
Linux Linuxd20ee42f8226607b5693b2bc2f115ca2d270221aVendor (CNA)
debian:linux6.1.180-1 · Debian:12Package 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).

Technical details

Attack conditions

  • 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.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records