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kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service.

🗓️ 25 Feb 2026 15:20:23Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 12 Views

Linux kernel framebuffer out-of-bounds write in bit_putcs enables low-privilege local users to escalate privileges, disclose information, or cause denial of service.

Related
Packages
Refs
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Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1350)
8 Jan 202600:00
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Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1495)
30 Mar 202600:00
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Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-112 (ALASKERNEL-5.10-2026-112)
19 Feb 202600:00
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Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2025-096 (ALASKERNEL-5.15-2025-096)
5 Jan 202600:00
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Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2026-118 (ALASKERNEL-5.4-2026-118)
19 Feb 202600:00
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Tenable Nessus		AlmaLinux 10 : kernel (ALSA-2026:2282)
12 Feb 202600:00
–nessus
Tenable Nessus		AlmaLinux 8 : kernel (ALSA-2026:2720)
26 Feb 202600:00
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Tenable Nessus		AlmaLinux 9 : kernel (ALSA-2026:2722)
26 Feb 202600:00
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Tenable Nessus		AlmaLinux 8 : kernel-rt (ALSA-2026:2821)
23 Feb 202600:00
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Tenable Nessus		Debian dla-4404 : ata-modules-5.10.0-35-armmp-di - security update
12 Dec 202500:00
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.4x86_64bpftool4.18.0-305.186.1.el8_4bpftool-4.18.0-305.186.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64bpftool-debuginfo4.18.0-305.186.1.el8_4bpftool-debuginfo-4.18.0-305.186.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel4.18.0-305.186.1.el8_4kernel-4.18.0-305.186.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4noarchkernel-abi-stablelists4.18.0-305.186.1.el8_4kernel-abi-stablelists-4.18.0-305.186.1.el8_4.noarch.rpm
Red Hat Enterprise Linux8.4x86_64kernel-core4.18.0-305.186.1.el8_4kernel-core-4.18.0-305.186.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug4.18.0-305.186.1.el8_4kernel-debug-4.18.0-305.186.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-core4.18.0-305.186.1.el8_4kernel-debug-core-4.18.0-305.186.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-debuginfo4.18.0-305.186.1.el8_4kernel-debug-debuginfo-4.18.0-305.186.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-devel4.18.0-305.186.1.el8_4kernel-debug-devel-4.18.0-305.186.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-modules4.18.0-305.186.1.el8_4kernel-debug-modules-4.18.0-305.186.1.el8_4.x86_64.rpm
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30 Jun 2026 04:33Current
5.8Medium risk
Vulners AI Score5.8
EPSS0.00171
SSVC
CWE-787
Linux kernelframebuffer deviceout of bounds writebit_putcslocal userprivilege escalationinformation disclosuredenial of service
12