Unknown

CVE-2026-72428 — bpf: Fix stack slot index in nospec checks

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix stack slot index in nospec checks check_stack_write_fixed_off() computes the byte slot for a fixed-offset stack write as -off - 1, and records each written byte in slot_type[] with (slot - i) % BPF_REG_SIZE. The Spectre v4 sanitization pre-check uses slot_type[i] instead. For a 4-byte write at fp-8 after the lower half of fp-8 has been zeroed, the pre-check scans bytes 0..3 and sees STACK_ZERO while the actual write updates bytes 7..4. That can leave the second half-slot write without nospec_result even though the bytes being overwritten still require sanitization. Use the same slot index in the sanitization pre-check that the write path uses when updating slot_type[].

Published Aug 15, 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)+2

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

0.22%

ahead of 13% of scored CVEs · Oct 29, 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	≥ 0e9280654aa482088ee6ef3deadef331f5ac5fb0 and < e62268e695075a481a6c4feeb022c19cf57422a6≥ 2039f26f3aca5b0e419b98f65dd36481337b86ee and < a71eb8f730a91271cf47ce291e785b6b7e54622f≥ 2039f26f3aca5b0e419b98f65dd36481337b86ee and < ca119656baa8f48a56e0c2f3ab63fdd33ca9e307≥ 2039f26f3aca5b0e419b98f65dd36481337b86ee and < 475405593de2b796224c6297aece44f321195919≥ 2039f26f3aca5b0e419b98f65dd36481337b86ee and < f1471aa76d74e0df3b2a90731ca0208f498c670b≥ 2039f26f3aca5b0e419b98f65dd36481337b86ee and < 68b41e68a62299f26cb16af422b5c7d1c69dafd9≥ 2039f26f3aca5b0e419b98f65dd36481337b86ee and < db8f1dcf5950b91886b9df4270bc816370d292c1≥ 2039f26f3aca5b0e419b98f65dd36481337b86ee and < d1d53aa30ab3b5ae89161c9cc840b3f7489ad386 and 8 more version 872968502114d68c21419cf7eb5ab97717e7b803version f5893af2704eb763eb982f01d573f5b19f06b623version 0b27bdf02c400684225ee5ee99970bcbf5082282≥ 5.10.56 and < 5.10.261≥ 4.19.207 and < 4.20≥ 5.4.146 and < 5.5≥ 5.13.8 and < 5.14version 5.14	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 29, 2026 · 14 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
Aug 15, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

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

References

8 on the record

git.kernel.org/stable/c/a71eb8f730a91271cf47ce291e785b6b7e54622f
NIST National Vulnerability Database
git.kernel.org/stable/c/ca119656baa8f48a56e0c2f3ab63fdd33ca9e307
NIST National Vulnerability Database
git.kernel.org/stable/c/475405593de2b796224c6297aece44f321195919
NIST National Vulnerability Database
git.kernel.org/stable/c/db8f1dcf5950b91886b9df4270bc816370d292c1
NIST National Vulnerability Database
git.kernel.org/stable/c/d1d53aa30ab3b5ae89161c9cc840b3f7489ad386
NIST National Vulnerability Database
git.kernel.org/stable/c/68b41e68a62299f26cb16af422b5c7d1c69dafd9
NIST National Vulnerability Database
git.kernel.org/stable/c/e62268e695075a481a6c4feeb022c19cf57422a6
NIST National Vulnerability Database
git.kernel.org/stable/c/f1471aa76d74e0df3b2a90731ca0208f498c670b
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-99216 Drivers: hv: Don't reset VMBus connection state on error/exit paths 2d
Unknown CVE-2026-99215 power: supply: core: prevent unregistering a power supply while a callback runs 2d
Unknown CVE-2026-99207 scsi: target: Disable interrupts while holding delayed_cmd_lock 2d
Unknown CVE-2026-99208 drm/xe/oa: Zero OA buffer at allocation 2d
Unknown CVE-2026-99209 drm/xe: skip eviction of a BO with no resource 2d
Unknown CVE-2026-99210 accel/rocket: clear rdev on device init failure 2d

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-2026-72428 is "bpf: Fix stack slot index in nospec checks", 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 0.22% 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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