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 breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Linux / Linux7.1 – *
- Linux / Linux528eb2cb87bc1353235a6384696b4849bde8b0ba – edc90a12073b9a530064a99945c183dde120cb99
- Linux / Linux528eb2cb87bc1353235a6384696b4849bde8b0ba – 44c4f999b03f55debb1a0c5ab5c1796895a1adf8
- Linux / Linux528eb2cb87bc1353235a6384696b4849bde8b0ba – 366b0e05ee24f5ba62bdc7ec1346038258b9a797
- Linux / Linux528eb2cb87bc1353235a6384696b4849bde8b0ba – 834918a77be51419383bf1dda9f02b81ecf26b34
- Linux / Linux528eb2cb87bc1353235a6384696b4849bde8b0ba – 202e42e4aa890172366354b233c42c73107a3f59
- Linux / Linux6.3 – 6.3
- Linux / Linux0 – 6.3
- Linux / Linux6.6.141 – 6.6.*
- Linux / Linux6.12.91 – 6.12.*
- Linux / Linux6.18.33 – 6.18.*
- Linux / Linux7.0.10 – 7.0.*
References
- MISChttps://git.kernel.org/stable/c/edc90a12073b9a530064a99945c183dde120cb99
- MISChttps://git.kernel.org/stable/c/44c4f999b03f55debb1a0c5ab5c1796895a1adf8
- MISChttps://git.kernel.org/stable/c/366b0e05ee24f5ba62bdc7ec1346038258b9a797
- MISChttps://git.kernel.org/stable/c/834918a77be51419383bf1dda9f02b81ecf26b34
- MISChttps://git.kernel.org/stable/c/202e42e4aa890172366354b233c42c73107a3f59