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().
Metrics
Affected Vendors & Products
References
History
Fri, 14 Feb 2025 17:00:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Linux
Linux linux Kernel |
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Weaknesses | CWE-125 | |
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
Vendors & Products |
Linux
Linux linux Kernel |
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Metrics |
cvssV3_1
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cvssV3_1
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Fri, 22 Nov 2024 12:00:00 +0000
Type | Values Removed | Values Added |
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References |
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Mon, 04 Nov 2024 13:45:00 +0000
Type | Values Removed | Values Added |
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References |
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Mon, 04 Nov 2024 13:15:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2024-12-19T08:22:20.690Z
Reserved: 2024-03-02T21:55:42.572Z
Link: CVE-2023-52598
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Updated: 2024-08-02T23:03:21.151Z
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Status : Analyzed
Published: 2024-03-06T07:15:09.990
Modified: 2025-02-14T16:40:38.513
Link: CVE-2023-52598
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