CVE-2026-53110
Analyzed
Analyzed - Analysis Complete
Zero-Extension Flaw in Linux Kernel BPF JIT
Vulnerability report for CVE-2026-53110, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-06-24
Last updated on: 2026-07-23
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
s390/bpf: Zero-extend bpf prog return values and kfunc arguments
s390x ABI requires callers to zero-extend unsigned arguments and
sign-extend signed arguments, and callees to zero-extend unsigned
return values and sign-extend signed return values.
s390 BPF JIT currently implements only sign extension. Fix this
omission and implement zero extension too.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 6.7 (inc) to 6.12.91 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.18.33 (exc) |
| linux | linux_kernel | From 6.19 (inc) to 7.0.10 (exc) |
| linux | linux_kernel | From 6.3 (inc) to 6.6.141 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
