CVE-2026-53110
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.12%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/202e42e4aa890172366354b233c42c73107a3f59Patch
- https://git.kernel.org/stable/c/366b0e05ee24f5ba62bdc7ec1346038258b9a797Patch
- https://git.kernel.org/stable/c/44c4f999b03f55debb1a0c5ab5c1796895a1adf8Patch
- https://git.kernel.org/stable/c/834918a77be51419383bf1dda9f02b81ecf26b34Patch
- https://git.kernel.org/stable/c/edc90a12073b9a530064a99945c183dde120cb99Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.