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NVD / CVE Program· CNA Linux

CVE-2025-40036: misc: fastrpc: fix possible map leak in fastrpc_put_args

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: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 3ad42dc66445df6977cf4be0c06f1a655299ce6c, 78d33a041555db03903e8037fd053ed74fbd88cb, a085658264d0c8d4f795d4631f77d7289a021de9.

Low priority for now. Upgrade to Linux Linux 3ad42dc66445df6977cf4be0c06f1a655299ce6c, 78d33a041555db03903e8037fd053ed74fbd88cb, a085658264d0c8d4f795d4631f77d7289a021de9 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: misc: fastrpc: fix possible map leak in fastrpc_put_args copy_to_user() failure would cause an early return without cleaning up the fdlist, which has been updated by the DSP. This could lead to map leak. Fix this by redirecting to a cleanup path on failure, ensuring that all mapped buffers are properly released before returning.

—No exploit Fix available
Published
Oct 28, 2025
Updated
Oct 19, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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

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  • when exploit code appears or is weaponized
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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.

—

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

    • 5.1affected
    • c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 and later · before a085658264d0c8d4f795d4631f77d7289a021de9affected · git
    • c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 and later · before 3ad42dc66445df6977cf4be0c06f1a655299ce6caffected · git
    • c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 and later · before 78d33a041555db03903e8037fd053ed74fbd88cbaffected · git
    • c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 and later · before c000f65f0ac93d9f9cc69a230d372f6ca93e4879affected · git
    • c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 and later · before da1ba64176e0138f2bfa96f9e43e8c3640d01e1eaffected · git
    • before 5.1not affected · semver
    • 6.1.156 and later · up to and including 6.1.*not affected · semver
    • 6.6.112 and later · up to and including 6.6.*not affected · semver
    • 6.12.53 and later · up to and including 6.12.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.158-16.1.158-1
Debian:13linuxbefore 6.12.57-16.12.57-1
Debian:14linuxbefore 6.17.6-16.17.6-1
openSUSE:Tumbleweedkernel-sourcebefore 6.17.7-1.16.17.7-1.1

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-2025-40034Oct 28, 2025 · PCI/AER: Avoid NULL pointer dereference in aer_ratelimit()
    0Monitor
  • ← EarlierCVE-2025-40035Oct 28, 2025 · Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
    0Monitor
  • Later →CVE-2025-40037Oct 28, 2025 · fbdev: simplefb: Fix use after free in simplefb_detach_genpds()
    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 Linux3ad42dc66445df6977cf4be0c06f1a655299ce6cVendor (CNA)
Linux Linux78d33a041555db03903e8037fd053ed74fbd88cbVendor (CNA)
Linux Linuxa085658264d0c8d4f795d4631f77d7289a021de9Vendor (CNA)
Linux Linuxc000f65f0ac93d9f9cc69a230d372f6ca93e4879Vendor (CNA)
Linux Linuxda1ba64176e0138f2bfa96f9e43e8c3640d01e1eVendor (CNA)
debian:linux6.1.158-1 · Debian:12Package registry (OSV)
opensuse:kernel-source6.17.7-1.1 · openSUSE:TumbleweedPackage 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.

No history yet (it accumulates with the daily EPSS job).

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.

—

Bug bounty scope

No known public program.

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

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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✗ → ✓

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References

Show all references (4 more)

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

All records