Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

kernel: x86/bugs: Enable IBPB flush on BPF JIT allocation

A flaw was found in the Linux kernel. This vulnerability involves an incomplete defense against Spectre-v2, a type of attack that can expose sensitive information by exploiting how modern processors predict future operations. Specifically, when the Berkeley Packet Filter BPF Just-In-Time JIT...

kernel: i2c: stub: Reject I2C block transfers with invalid length

A flaw was found in the Linux kernel's i2c-stub driver. A local user with access to the /dev/i2c- device can exploit this vulnerability by issuing an I2C System Management Bus SMBus input/output control ioctl command with a specially crafted block transfer length. This invalid length can cause th...

kernel: KVM: arm64: vgic: Check the interrupt is still ours before migrating it

A flaw was found in the KVM Kernel-based Virtual Machine arm64 vgic Virtual Generic Interrupt Controller component of the Linux kernel. During interrupt migration, the vgicpruneaplist function temporarily drops and reacquires locks. If an interrupt is removed from the active processor list aplist...

kernel: af_unix: Unlink scc_entry in unix_del_edge()

A flaw was found in the Linux kernel's afunix component. A race condition during concurrent send and close operations can lead to the garbage collector GC partially freeing a Strongly Connected Component SCC. This inconsistent state may cause subsequent GC operations to iterate over a partially...

kernel: thermal: core: Fix thermal zone device registration error path

A flaw was found in the Linux kernel's thermal core subsystem. When thermalzonedeviceregisterwithtrips fails during device registration, it does not properly wait for the thermal zone device's removal completion. This can lead to the premature freeing of the device's memory, creating a...

kernel: macsec: fix replay protection at XPN lower-PN wrap

A flaw was found in the Linux kernel's MACsec Media Access Control Security subsystem. When using Extended Packet Numbering XPN, a vulnerability exists where the replay protection mechanism can be bypassed. An attacker can exploit an integer overflow when the packet number reaches its maximum...

kernel: openvswitch: fix GSO userspace truncation underflow

A flaw was found in the Open vSwitch component of the Linux kernel. This vulnerability arises from an underflow condition when handling Generic Segmentation Offload GSO packets in userspace. A length calculation error can lead to a buffer underflow when data is processed by the skbzerocopy...

kernel: bpf: Support for hardening against JIT spraying

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF Just-In-Time JIT compiler. The BPF JIT allocator reuses memory space, and when new code is written, an indirect jump into the new program can reuse a branch prediction left behind by an old program. This could allow an attacker to...

CVE-2025-8061-Exploit

CVE-2025-8061 Exploit Overview Proof-of-Concept exploit for LnvMSRIO.sys Lenovo MSR I/O Driver, demonstrating arbitrary physical memory read/write and kernel memory access via Superfetch VA-to-PA translation. Driver Information Property| Value ---|--- Driver Name| LnvMSRIO.sys Device Name|...

Important: Red Hat Security Advisory: kpatch-patch-4_18_0-477_107_1, kpatch-patch-4_18_0-477_120_1, kpatch-patch-4_18_0-477_130_1, kpatch-patch-4_18_0-477_143_1, and kpatch-patch-4_18_0-477_161_1 security update

An update for multiple packages is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event()

A flaw was found in the Linux kernel's RDMA/mlx4 component. This vulnerability arises from the incorrect use of Read-Copy Update RCU in the mlx4srqevent function. An attacker could potentially trigger an event before the srq object is fully initialized, leading to a system crash. This could resul...

kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

A flaw was found in the Linux kernel's IPv4 networking component. The ipv4sysctlexitnet function prematurely frees the net-ipv4.sysctllocalreservedports memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can resul...

ghostlock-selinux-disabler

GhostLock SELinux Disabler Write-1-only extraction of JoinChang/ghostlock-oneplus for CVE-2026-43499. It disables SELinux enforcing on supported, vulnerable OnePlus kernels with a locked bootloader, and does nothing else: no cred overwrite, no root shell, no KernelSU, no bootstrap, and no KASLR...

dirtyclone-CVE-2026-43503

CVE-2026-43503 — DirtyClone Linux local privilege escalation. A cloned skbuff loses the SKBFLSHAREDFRAG flag, so ESP in-place decryption writes into file-backed page-cache memory. The PoC patches /etc/passwd in cache to inject a uid-0 account and gives a root shell. Disk is never modified. Fixed ...

CVE-2025-7771-Vulnerability-Exploration

🔓 ThrottleStop.sys Kernel Exploit — HVCI-Compatible Physical Memory Mapper CVE-2025-7771 — Arbitrary Physical Memory Read/Write via ThrottleStop.sys IOCTLs ⚠️ Disclaimer This project is published for educational and research purposes only. The goal is to demonstrate how a signed, trusted kernel...

dirtyfrag-arm64

dirtyfrag-arm64 arm64/aarch64 port of V4bel/dirtyfrag CVE-2026-43284, CVE-2026-43500. Tested on Ubuntu 24.04.4 LTS with linux-aws 6.17.0-1013-aws on AWS Graviton newest available as of this writing. Full writeup with AppArmor bypass analysis, hardening notes, and detection notes:...

kernel: io_uring/poll: fix signed comparison in io_poll_get_ownership()

A flaw was found in the Linux kernel's iouring/poll component. A logic error exists in the iopollgetownership function due to an incorrect signed comparison. This flaw prevents the necessary slowpath from being triggered when the IOPOLLCANCELFLAG is set, potentially leading to unexpected behavior...

kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

A flaw was found in the Linux kernel's IPv4 networking component. The ipv4sysctlexitnet function prematurely frees the net-ipv4.sysctllocalreservedports memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can resul...

kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event()

A flaw was found in the Linux kernel's RDMA/mlx4 component. This vulnerability arises from the incorrect use of Read-Copy Update RCU in the mlx4srqevent function. An attacker could potentially trigger an event before the srq object is fully initialized, leading to a system crash. This could resul...