krie

KRIe KRIe is a research project that aims to detect Linux Kernel exploits with eBPF. KRIe is far from being a bulletproof strategy: from eBPF related limitations to post exploitation detections that might rely on a compromised kernel to emit security events, it is clear that a motivated attacker...

mquire

mquire mquire, a play on the memory and inquire words, is a memory querying tool inspired by osquery. Key advantage: No external debug symbols needed mquire can analyze Linux kernel memory snapshots without requiring external debug symbols. Everything needed for analysis is already embedded in th...

cve-2024-23113-poc

CVE-2024-23113-poc CVE-2024-23113 is a vulnerability discovered in the Linux Kernel , classified as an arbitrary code execution vulnerability that affects the bpf Berkeley Packet Filter subsystem. Specifically, this vulnerability affects objects of the bpfprog type in bpf programs, and can allow ...

CVE-2026-93148

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF component. This vulnerability arises from incorrect boundary checks during BPF Type Format BTF struct walks for memory-allocated objects. Specifically, the system fails to reject accesses that extend beyond the allocated object's...

CVE-2026-93138

A flaw was found in the Linux kernel. Specifically, a race condition exists within the Berkeley Packet Filter BPF subsystem when preparing vmlinux BPF Type Format BTF data. This issue occurs because the system can publish a pointer to the BTF data before its contents are fully visible, allowing...

UBUNTU-CVE-2026-98813

In the Linux kernel, the following vulnerability has been resolved: bpf: Hold map BTF for the memory allocator destructor record bpfmasetdtor duplicates map-record so that the bpfmemalloc destructor can release the special fields of hash and rhash map elements once the allocator frees them for...

SUSE CVE-2026-98813

In the Linux kernel, the following vulnerability has been resolved: bpf: Hold map BTF for the memory allocator destructor record bpfmasetdtor duplicates map-record so that the bpfmemalloc destructor can release the special fields of hash and rhash map elements once the allocator frees them for...

CVE-2026-98813 bpf: Hold map BTF for the memory allocator destructor record

In the Linux kernel, the following vulnerability has been resolved: bpf: Hold map BTF for the memory allocator destructor record bpfmasetdtor duplicates map-record so that the bpfmemalloc destructor can release the special fields of hash and rhash map elements once the allocator frees them for...

CVE-2026-98813 bpf: Hold map BTF for the memory allocator destructor record

In the Linux kernel, the following vulnerability has been resolved: bpf: Hold map BTF for the memory allocator destructor record bpfmasetdtor duplicates map-record so that the bpfmemalloc destructor can release the special fields of hash and rhash map elements once the allocator frees them for...

CVE-2026-98813

The Linux kernel contains a vulnerability where the bpf memory allocator fails to maintain a reference to the map BTF within the destructor record. When bpf_mem_alloc_destroy() defers a final drain to a workqueue, bpf_map_free() may free the map's BTF while the worker still holds a duplicate reco...

CVE-2026-98813

In the Linux kernel, the following vulnerability has been resolved: bpf: Hold map BTF for the memory allocator destructor record bpfmasetdtor duplicates map-record so that the bpfmemalloc destructor can release the special fields of hash and rhash map elements once the allocator frees them for...

PT-2026-116866

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix divide-by-zero in btf struct walk When an access goes past the struct and the last member is a flexible array, btf struct walk folds the offset back into a single element with off - moff % t-size, but never checks that t...

Linux Kernel Security Vulnerabilities

There are security vulnerabilities in Linux kernels versions 6.12.112 to 6.13, 6.18.55 to 6.19, and 7.0. These vulnerabilities stem from the function bpfmasetdtor, which copies map-record but does not maintain the BTF reference within the destructor context. As a result, the working queue still...

CVE-2026-98065

A flaw was found in the Linux kernel's BPF Berkeley Packet Filter subsystem. A local user can cause a Denial of Service DoS by creating a hash map lacking key type information and reading it through the BPF file system. Due to missing validation of BPF Type Format BTF metadata, the kernel attempt...

CVE-2026-98064

A flaw was found in the Linux kernel. A local user can cause a Denial of Service DoS and crash the system by running a specially crafted BPF Berkeley Packet Filter program. The issue occurs within the BPF Type Format BTF component when attempting to display data referencing a void data type, whic...

CVE-2026-98063

A flaw was found in the Linux kernel's BPF Berkeley Packet Filter subsystem. When formatting data using BPF Type Format BTF, the kernel attempts to access type identifiers without checking if they are initialized. A local user with permissions to execute BPF programs can exploit this vulnerabilit...

AZL-104492 CVE-2026-98063 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL-ptr-deref in btfvarshow btfvarshow calls btftypeidresolve unconditionally, which dereferences btf-resolvedids. That is NULL for a base BTF - e.g. the vmlinux BTF that bpfsnprintfbtf renders against - since base BTF ...

CVE-2026-98065

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject key-less BTF for hash maps mapcheckbtf allows a key-less BTF btfkeytypeid == 0 only for maps that have a -mapcheckbtf callback, and leaves the actual decision to that callback. Hash maps used to have no -mapcheckbtf, ...

CVE-2026-98065

The Linux kernel contains a vulnerability where key-less BTF (Type ID 0) can be created for hash maps (htab and rhtab ). This occurs because these maps gained a ->map_check_btf callback that fails to validate the key, allowing the creation of maps that were previously rejected. When reading th...

EUVD-2026-86718

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject key-less BTF for hash maps mapcheckbtf allows a key-less BTF btfkeytypeid == 0 only for maps that have a -mapcheckbtf callback, and leaves the actual decision to that callback. Hash maps used to have no -mapcheckbtf, ...