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NVD / CVE Program· CNA Linux

CVE-2026-80865: bpf: Add missing access_ok call to copy_user_syms

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: 0.16% (FIRST EPSS).
  • Fixed version: Linux Linux 0b6252afcd1965f77c6a6f8a802a2e1381822b98, 128391b57e0977c35243672a6f970073651f3831, 28ce7bcf8a29aa395b60764df4c97be745de89d0.

Low priority for now. Upgrade to Linux Linux 0b6252afcd1965f77c6a6f8a802a2e1381822b98, 128391b57e0977c35243672a6f970073651f3831, 28ce7bcf8a29aa395b60764df4c97be745de89d0 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: bpf: Add missing access_ok call to copy_user_syms As reported by sashiko we use __get_user without prior access_ok call on the user space pointer. Adding the missing call for the whole pointer array. Plus removing the err check in the error path, because it's not needed and also we can return -ENOMEM directly from the first kvmalloc_array fail path. [1] https://lore.kernel.org/bpf/20260611115503.AC16D1F00893@smtp.kernel.org/

—No exploit Fix available
Published
Sep 4, 2026
Updated
Sep 4, 2026
EPSS
0.1% · 5th 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 · 0.1%

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Noroxi analysis

What does it mean in your environment?

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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

    • 5.19affected
    • 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and later · before a67f7f9647cb243b3be32163e88e5bc76e3d51e9affected · git
    • 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and later · before 8b719cef5ac30ab83ce5693c5faf10e4944874afaffected · git
    • 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and later · before 128391b57e0977c35243672a6f970073651f3831affected · git
    • 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and later · before 0b6252afcd1965f77c6a6f8a802a2e1381822b98affected · git
    • 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and later · before 28ce7bcf8a29aa395b60764df4c97be745de89d0affected · git
    • 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and later · before d5dc200c3a3f217de072af269dd90adddf90e48daffected · git
    • before 5.19not affected · semver
    • 6.1.178 and later · up to and including 6.1.*not affected · semver
    • 6.6.145 and later · up to and including 6.6.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
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-2026-80785Sep 4, 2026 · fbdev: serialize mode sysfs access with lock_fb_info()
    0Monitor
  • ← EarlierCVE-2026-80820Sep 4, 2026 · xfs: don't livelock in scrub on a circular unlinked list
    0Monitor
  • Later →CVE-2026-80867Sep 4, 2026 · alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
    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 Linux0b6252afcd1965f77c6a6f8a802a2e1381822b98Vendor (CNA)
Linux Linux128391b57e0977c35243672a6f970073651f3831Vendor (CNA)
Linux Linux28ce7bcf8a29aa395b60764df4c97be745de89d0Vendor (CNA)
Linux Linux8b719cef5ac30ab83ce5693c5faf10e4944874afVendor (CNA)
Linux Linuxa67f7f9647cb243b3be32163e88e5bc76e3d51e9Vendor (CNA)
Linux Linuxd5dc200c3a3f217de072af269dd90adddf90e48dVendor (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.

—

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 (5 more)

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

All records