{"id":"CVE-2026-53110","summary":"s390/bpf: Zero-extend bpf prog return values and kfunc arguments","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/bpf: Zero-extend bpf prog return values and kfunc arguments\n\ns390x ABI requires callers to zero-extend unsigned arguments and\nsign-extend signed arguments, and callees to zero-extend unsigned\nreturn values and sign-extend signed return values.\n\ns390 BPF JIT currently implements only sign extension. Fix this\nomission and implement zero extension too.","modified":"2026-07-08T08:09:45.167019121Z","published":"2026-06-24T16:30:44.036Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53110.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/202e42e4aa890172366354b233c42c73107a3f59"},{"type":"WEB","url":"https://git.kernel.org/stable/c/366b0e05ee24f5ba62bdc7ec1346038258b9a797"},{"type":"WEB","url":"https://git.kernel.org/stable/c/44c4f999b03f55debb1a0c5ab5c1796895a1adf8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/834918a77be51419383bf1dda9f02b81ecf26b34"},{"type":"WEB","url":"https://git.kernel.org/stable/c/edc90a12073b9a530064a99945c183dde120cb99"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53110.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53110"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"528eb2cb87bc1353235a6384696b4849bde8b0ba"},{"fixed":"edc90a12073b9a530064a99945c183dde120cb99"},{"fixed":"44c4f999b03f55debb1a0c5ab5c1796895a1adf8"},{"fixed":"366b0e05ee24f5ba62bdc7ec1346038258b9a797"},{"fixed":"834918a77be51419383bf1dda9f02b81ecf26b34"},{"fixed":"202e42e4aa890172366354b233c42c73107a3f59"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53110.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.3.0"},{"fixed":"6.6.141"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.91"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53110.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}