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Vulnerability record · CVE-2026-53110 · published 24 June 2026

CVE-2026-53110: Linux kernel vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.12% · top 98.4%
7.8CVSS 3.1 base score
0.12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
23 Jul 2026Last modified by NVD

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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/202e42e4aa890172366354b233c42c73107a3f59 Patch
https://git.kernel.org/stable/c/366b0e05ee24f5ba62bdc7ec1346038258b9a797 Patch
https://git.kernel.org/stable/c/44c4f999b03f55debb1a0c5ab5c1796895a1adf8 Patch
https://git.kernel.org/stable/c/834918a77be51419383bf1dda9f02b81ecf26b34 Patch
https://git.kernel.org/stable/c/edc90a12073b9a530064a99945c183dde120cb99 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-53110), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.