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CVE-2023-53747 vc_screen: reload load of struct vc_data pointer in vcs_write() to avoid UAF

🗓️ 08 Dec 2025 01:19:06Reported by GoogleType 
osv
 osv🔗 osv.dev👁 4 Views

vc_screen reloads vc_data pointer in vcs_write after console_lock to prevent use-after-free in vcs_size.

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Refs
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Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2023-021 (ALASKERNEL-5.15-2023-021)
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Tenable Nessus		EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1244)
10 Mar 202600:00
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Tenable Nessus		EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1280)
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Tenable Nessus		EulerOS Virtualization 2.13.1 : kernel (EulerOS-SA-2026-2132)
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Tenable Nessus		Photon OS 4.0: Linux PHSA-2021-4.0-0065
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02 Apr 2026 09:45Current
6Medium risk
Vulners AI Score6
EPSS0.0004
linux kernelvc_screenvc_data pointervcs_writevcs_sizeuse after free
4