In the Linux kernel, the following vulnerability has been resolved: s390/ptrace: handle setting of fpc register correctly If the content of the floating point control (fpc) register of a traced process is modified with the ptrace interface the new value is tested for validity by temporarily loading it into the fpc register. This may lead to corruption of the fpc register of the tracing process: if an interrupt happens while the value is temporarily loaded into the fpc register, and within interrupt context floating point or vector registers are used, the current fp/vx registers are saved with save_fpu_regs() assuming they belong to user space and will be loaded into fp/vx registers when returning to user space. test_fp_ctl() restores the original user space fpc register value, however it will be discarded, when returning to user space. In result the tracer will incorrectly continue to run with the value that was supposed to be used for the traced process. Fix this by saving fpu register contents with save_fpu_regs() before using test_fp_ctl().
History

Mon, 04 Nov 2024 13:45:00 +0000

Type Values Removed Values Added
References

Mon, 04 Nov 2024 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-03-06T06:45:27.127Z

Updated: 2024-11-04T14:49:26.466Z

Reserved: 2024-03-02T21:55:42.572Z

Link: CVE-2023-52598

cve-icon Vulnrichment

Updated: 2024-08-02T23:03:21.151Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-03-06T07:15:09.990

Modified: 2024-11-04T13:16:40.033

Link: CVE-2023-52598

cve-icon Redhat

Severity : Low

Publid Date: 2024-03-06T00:00:00Z

Links: CVE-2023-52598 - Bugzilla