CVE-2026-53110
s390/bpf: Zero-extend bpf prog return values and kfunc arguments
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.
INFO
Published Date :
June 24, 2026, 5:17 p.m.
Last Modified :
July 14, 2026, 3:26 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to the patched version.
- Verify BPF JIT extension handling.
- Ensure proper ABI compliance for arguments and return values.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53110.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53110 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53110
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53110 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53110 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 28, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 24, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '528eb2cb87bc1353235a6384696b4849bde8b0ba', 'lessThan': 'edc90a12073b9a530064a99945c183dde120cb99', 'versionType': 'git'}, {'status': 'affected', 'version': '528eb2cb87bc1353235a6384696b4849bde8b0ba', 'lessThan': '44c4f999b03f55debb1a0c5ab5c1796895a1adf8', 'versionType': 'git'}, {'status': 'affected', 'version': '528eb2cb87bc1353235a6384696b4849bde8b0ba', 'lessThan': '366b0e05ee24f5ba62bdc7ec1346038258b9a797', 'versionType': 'git'}, {'status': 'affected', 'version': '528eb2cb87bc1353235a6384696b4849bde8b0ba', 'lessThan': '834918a77be51419383bf1dda9f02b81ecf26b34', 'versionType': 'git'}, {'status': 'affected', 'version': '528eb2cb87bc1353235a6384696b4849bde8b0ba', 'lessThan': '202e42e4aa890172366354b233c42c73107a3f59', 'versionType': 'git'}], 'programFiles': ['arch/s390/net/bpf_jit_comp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.3'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.3', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/s390/net/bpf_jit_comp.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/202e42e4aa890172366354b233c42c73107a3f59 Added Reference https://git.kernel.org/stable/c/366b0e05ee24f5ba62bdc7ec1346038258b9a797 Added Reference https://git.kernel.org/stable/c/44c4f999b03f55debb1a0c5ab5c1796895a1adf8 Added Reference https://git.kernel.org/stable/c/834918a77be51419383bf1dda9f02b81ecf26b34 Added Reference https://git.kernel.org/stable/c/edc90a12073b9a530064a99945c183dde120cb99