Unknown

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

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/

Published Sep 4, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.16%

ahead of 5% of scored CVEs · Oct 27, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and < a67f7f9647cb243b3be32163e88e5bc76e3d51e9≥ 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and < 8b719cef5ac30ab83ce5693c5faf10e4944874af≥ 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and < 128391b57e0977c35243672a6f970073651f3831≥ 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and < 0b6252afcd1965f77c6a6f8a802a2e1381822b98≥ 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and < 28ce7bcf8a29aa395b60764df4c97be745de89d0≥ 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec and < d5dc200c3a3f217de072af269dd90adddf90e48dversion 5.19	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 27, 2026 · 12 reading(s) · max 0.22%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 4, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

6 on the record

git.kernel.org/stable/c/d5dc200c3a3f217de072af269dd90adddf90e48d
NIST National Vulnerability Database
git.kernel.org/stable/c/a67f7f9647cb243b3be32163e88e5bc76e3d51e9
NIST National Vulnerability Database
git.kernel.org/stable/c/128391b57e0977c35243672a6f970073651f3831
NIST National Vulnerability Database
git.kernel.org/stable/c/8b719cef5ac30ab83ce5693c5faf10e4944874af
NIST National Vulnerability Database
git.kernel.org/stable/c/28ce7bcf8a29aa395b60764df4c97be745de89d0
NIST National Vulnerability Database
git.kernel.org/stable/c/0b6252afcd1965f77c6a6f8a802a2e1381822b98
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-99215 power: supply: core: prevent unregistering a power supply while a callback runs 10h
Unknown CVE-2026-99216 Drivers: hv: Don't reset VMBus connection state on error/exit paths 10h
Unknown CVE-2026-99213 vsock: treat TCP_CLOSING as once-established 10h
Unknown CVE-2026-99207 scsi: target: Disable interrupts while holding delayed_cmd_lock 10h
Unknown CVE-2026-99208 drm/xe/oa: Zero OA buffer at allocation 10h
Unknown CVE-2026-99209 drm/xe: skip eviction of a BO with no resource 10h

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-80865 is "bpf: Add missing access_ok call to copy_user_syms", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.16% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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