CVE - CVE-2023-52598

CVE-ID
CVE-2023-52598	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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().
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/02c6bbfb08bad78dd014e24c7b893723c15ec7a1 URL:https://git.kernel.org/stable/c/02c6bbfb08bad78dd014e24c7b893723c15ec7a1 MISC:https://git.kernel.org/stable/c/28a1f492cb527f64593457a0a0f0d809b3f36c25 URL:https://git.kernel.org/stable/c/28a1f492cb527f64593457a0a0f0d809b3f36c25 MISC:https://git.kernel.org/stable/c/6ccf904aac0292e1f6b1a1be6c407c414f7cf713 URL:https://git.kernel.org/stable/c/6ccf904aac0292e1f6b1a1be6c407c414f7cf713 MISC:https://git.kernel.org/stable/c/6d0822f2cc9b153bf2df49a84599195a2e0d21a8 URL:https://git.kernel.org/stable/c/6d0822f2cc9b153bf2df49a84599195a2e0d21a8 MISC:https://git.kernel.org/stable/c/7a4d6481fbdd661f9e40e95febb95e3dee82bad3 URL:https://git.kernel.org/stable/c/7a4d6481fbdd661f9e40e95febb95e3dee82bad3 MISC:https://git.kernel.org/stable/c/856caf2730ea18cb39e95833719c02a02447dc0a URL:https://git.kernel.org/stable/c/856caf2730ea18cb39e95833719c02a02447dc0a MISC:https://git.kernel.org/stable/c/8b13601d19c541158a6e18b278c00ba69ae37829 URL:https://git.kernel.org/stable/c/8b13601d19c541158a6e18b278c00ba69ae37829 MISC:https://git.kernel.org/stable/c/bdce67df7f12fb0409fbc604ce7c4254703f56d4 URL:https://git.kernel.org/stable/c/bdce67df7f12fb0409fbc604ce7c4254703f56d4
Assigning CNA
kernel.org
Date Record Created
20240302	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240302)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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