CVE-2026-53110

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux528eb2cb87bc1353235a6384696b4849bde8b0ba < edc90a12073b9a530064a99945c183dde120cb99affected
LinuxLinux528eb2cb87bc1353235a6384696b4849bde8b0ba < 44c4f999b03f55debb1a0c5ab5c1796895a1adf8affected
LinuxLinux528eb2cb87bc1353235a6384696b4849bde8b0ba < 366b0e05ee24f5ba62bdc7ec1346038258b9a797affected
LinuxLinux528eb2cb87bc1353235a6384696b4849bde8b0ba < 834918a77be51419383bf1dda9f02b81ecf26b34affected
LinuxLinux528eb2cb87bc1353235a6384696b4849bde8b0ba < 202e42e4aa890172366354b233c42c73107a3f59affected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.6.141 <= 6.6.*unaffected
LinuxLinux6.12.91 <= 6.12.*unaffected
LinuxLinux6.18.33 <= 6.18.*unaffected
LinuxLinux7.0.10 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References