CVE-2023-3640

SCTF2023kernelpwn SCTF 2023 커널 pwn 여담: 광고 하나 하자면, 필자는 2024년 졸업 예정 학부생이며, 올해 가을 채용에 참여 중입니다. 연락 주시면 감사하겠습니다 sycrop 이 문제는 두 가지 포인트를 테스트하고자 했습니다. 1. cpu entry area 매핑 영역의 시작점에는 커널 텍스트 세그먼트와의 오프셋이 고정된 몇 개의 주소가 있습니다. 자세한 내용은 아래 그림을 참조하세요. 이는 단순한 트릭이며, Google의 KCTF에 처음 등장한 후 국제 대회에서 몇 번 등장했습니다. 2. 유저...

CVE-2026-98150

A flaw was found in the Linux kernel's BPF Berkeley Packet Filter subsystem. A local user could trigger a Denial of Service DoS by providing an invalid processor identifier during per-CPU map operations on systems with non-contiguous CPU configurations. Due to improper validation of CPU flags, th...

SUSE CVE-2026-98149

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix percpu map update indexing with sparse CPU IDs Per-CPU array, hash, and cgroup storage map updates without BPFFCPU or BPFFALLCPUS use a value buffer whose per-CPU slots are packed in possible-CPU order. The buffer is siz...

CVE-2026-97526

In the Linux kernel, the following vulnerability has been resolved: s390/pai: Support CPU hotplug for PMU PAI The command 'perf stat -e paicrypto/CRYPTOALL/ -- ' crashes the kernel when CPUs are hotplug added during that run. Root cause is the missing allocation of per-CPU data structures for tha...

CVE-2026-98149: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix percpu map update indexing with sparse CPU IDs Per-CPU array, hash, and cgroup storage map updates without BPFFCPU or BPFFALLCPUS use a value buffer whose per-CPU slots are packed in possible-CPU order. The buffer is siz...

PT-2026-98811

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the BPF Berkeley Packet Filter subsystem regarding per-CPU map updates for array, hash, and cgroup storage maps when BPF F CPU or BPF F ALL CPUS are not used. The syst...

Linux Distros Unpatched Vulnerability : CVE-2026-93174

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Copy per-CPU map value padding in copymapvaluelong In kernel, per-CPU map elements are stored with roundupmap-valuesize, 8 bytes. On UAPI lookup paths, it...

Linux Distros Unpatched Vulnerability : CVE-2026-90121

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - irqchip/gic-v5: Clear per-CPU IRS data on teardown IRS affinity setup publishes an IRS pointer and IAFFID state in the per-CPU data before the remaining IRS...

DEBIAN-CVE-2026-93174

In the Linux kernel, the following vulnerability has been resolved: bpf: Copy per-CPU map value padding in copymapvaluelong In kernel, per-CPU map elements are stored with roundupmap-valuesize, 8 bytes. On UAPI lookup paths, it copies the rounded size for each CPU into a temporary buffer. However...

CVE-2026-90121

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v5: Clear per-CPU IRS data on teardown IRS affinity setup publishes an IRS pointer and IAFFID state in the per-CPU data before the remaining IRS initialization can fail. The error path then frees the IRS data without...

CVE-2026-93174 bpf: Copy per-CPU map value padding in copy_map_value_long()

In the Linux kernel, the following vulnerability has been resolved: bpf: Copy per-CPU map value padding in copymapvaluelong In kernel, per-CPU map elements are stored with roundupmap-valuesize, 8 bytes. On UAPI lookup paths, it copies the rounded size for each CPU into a temporary buffer. However...

EUVD-2026-82282

In the Linux kernel, the following vulnerability has been resolved: bpf: Copy per-CPU map value padding in copymapvaluelong In kernel, per-CPU map elements are stored with roundupmap-valuesize, 8 bytes. On UAPI lookup paths, it copies the rounded size for each CPU into a temporary buffer. However...

EUVD-2026-81714

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v5: Clear per-CPU IRS data on teardown IRS affinity setup publishes an IRS pointer and IAFFID state in the per-CPU data before the remaining IRS initialization can fail. The error path then frees the IRS data without...

CVE-2026-90121 irqchip/gic-v5: Clear per-CPU IRS data on teardown

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v5: Clear per-CPU IRS data on teardown IRS affinity setup publishes an IRS pointer and IAFFID state in the per-CPU data before the remaining IRS initialization can fail. The error path then frees the IRS data without...

CVE-2026-90121

CVE-2026-90121 affects the Linux kernel GICv5 interrupt controller driver (irqchip/gic-v5). During IRS (Interrupt Routing Structure) affinity setup, an IRS pointer and IAFFID state are published in per-CPU data before the remaining initialization can fail. On the error path and normal teardown, t...

CVE-2026-90121 irqchip/gic-v5: Clear per-CPU IRS data on teardown

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v5: Clear per-CPU IRS data on teardown IRS affinity setup publishes an IRS pointer and IAFFID state in the per-CPU data before the remaining IRS initialization can fail. The error path then frees the IRS data without...

CVE-2026-93174: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Copy per-CPU map value padding in copymapvaluelong In kernel, per-CPU map elements are stored with roundupmap-valuesize, 8 bytes. On UAPI lookup paths, it copies the rounded size for each CPU into a temporary buffer. However...

CVE-2026-90121: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v5: Clear per-CPU IRS data on teardown IRS affinity setup publishes an IRS pointer and IAFFID state in the per-CPU data before the remaining IRS initialization can fail. The error path then frees the IRS data without...

SUSE CVE-2026-89581

In the Linux kernel, the following vulnerability has been resolved: bpf, x86: Fix per-CPU address resolution into an extended register The destination of the per-CPU address MOV is encoded in ModRM.reg, which is extended by REX.R, but the REX prefix is built with add1mod, which sets REX.B. REX.B...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: sh: cpuinfo: Fixed a warning for CONFIGCPUMASKOFFSTACK When CONFIGCPUMASKOFFSTACK and CONFIGDEBUGPERCPUMAPS are selected, cpumaxbitswarn generates a runtime warning similar to the following when showing /proc/cpuinfo. This issue...