EUVD-2026-76569

In the Linux kernel, the following vulnerability has been resolved: libceph: validate OSD extent maps before cursor advance net/ceph/osdclient.c:osdsparseread validates that the sparse-read data length matches the summed extent lengths, but it does not validate that each OSD-supplied extent is...

CVE-2026-89657 libceph: validate OSD extent maps before cursor advance

In the Linux kernel, the following vulnerability has been resolved: libceph: validate OSD extent maps before cursor advance net/ceph/osdclient.c:osdsparseread validates that the sparse-read data length matches the summed extent lengths, but it does not validate that each OSD-supplied extent is...

CVE-2026-89656 libceph: reject buckets with mismatched CRUSH ids

In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, and the mapper later derives the per-bucket workspace index from the decoded bucket id. A malformed map can therefore make one bucket...

CVE-2026-89656

CVE-2026-89656 is an out-of-bounds write in the libceph subsystem of the Linux kernel . The crush_decode() function stores bucket data by array slot, but a malformed CRUSH map can cause one bucket to alias another's workspace by encoding a mismatched id. When a larger source bucket's permutation ...

CVE-2026-89656

In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, and the mapper later derives the per-bucket workspace index from the decoded bucket id. A malformed map can therefore make one bucket...

EUVD-2026-76568

In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, and the mapper later derives the per-bucket workspace index from the decoded bucket id. A malformed map can therefore make one bucket...

CVE-2026-89656 libceph: reject buckets with mismatched CRUSH ids

In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, and the mapper later derives the per-bucket workspace index from the decoded bucket id. A malformed map can therefore make one bucket...

CVE-2026-89650

In the Linux kernel, the following vulnerability has been resolved: ceph: bound numexporttargets array for mds info v2/v3 cephmdsmapdecode in fs/ceph/mdsmap.c reads numexporttargets from each per-mds info record and advances the decode cursor by numexporttargets sizeofu32 without first checking...

CVE-2026-89650

CVE-2026-89650 is a slab-out-of-bounds read in the Linux kernel's CephFS client , specifically in ceph_mdsmap_decode() (fs/ceph/mdsmap.c). When decoding an MDS map with per-MDS info version 2 or 3, the function advances the decode cursor by num_export_targets * sizeof(u32) without verifying remai...

CVE-2026-89650 ceph: bound num_export_targets array for mds info v2/v3

In the Linux kernel, the following vulnerability has been resolved: ceph: bound numexporttargets array for mds info v2/v3 cephmdsmapdecode in fs/ceph/mdsmap.c reads numexporttargets from each per-mds info record and advances the decode cursor by numexporttargets sizeofu32 without first checking...

EUVD-2026-76562

In the Linux kernel, the following vulnerability has been resolved: ceph: bound numexporttargets array for mds info v2/v3 cephmdsmapdecode in fs/ceph/mdsmap.c reads numexporttargets from each per-mds info record and advances the decode cursor by numexporttargets sizeofu32 without first checking...

EUVD-2026-76556

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

CVE-2026-89644 btrfs: fix extent map leak in NOCOW direct I/O write

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

CVE-2026-89644

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

CVE-2026-89644 btrfs: fix extent map leak in NOCOW direct I/O write

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

CVE-2026-89644

CVE-2026-89644 affects the btrfs filesystem in the Linux kernel. The root cause is an extent map reference leak in the NOCOW direct I/O write path: btrfs_get_blocks_direct_write() fails to drop the extent map obtained from btrfs_get_extent() when btrfs_create_dio_extent() returns an error (e.g., ...

CVE-2026-67211

OOM Denial of Service via Unbounded Map Pre-Sizing in Apache OpenNLP SymSpellModelSerializer Versions Affected: - 3.0.0-M4 - 3.0.0-M5 The opennlp-spellcheck extension was introduced in 3.0.0-M4. Releases 1.x and 2.x do not contain the affected code. Description: The SymSpellModelSerializer.create...

CVE-2026-67211

Apache OpenNLP versions 3.0.0-M4 and 3.0.0-M5 are vulnerable to an OOM denial of service in the opennlp-spellcheck extension. The SymSpellModelSerializer.create() method reads two 32-bit count fields from a binary SymSpell .bin model file and passes them directly to LinkedHashMap.newLinkedHashMap...

metasploitable-pentest-lab

Exploitation of vulnerabilities in Metasploitable Complete cycle of a real attack on a controlled and isolated environment: lab preparation, reconnaissance with nmap, attack surface prioritization, mapping to CVE, exploitation with Metasploit, post-exploitation, credential extraction and cracking...

CVE-2026-42533-POC

CVE-2026-42533 Pre-auth heap buffer overflow and heap information leak in nginx, caused by missing save/restore of PCRE capture state across the two passes of the script engine. A regex map variable evaluated between two capture references overwrites r-captures, so the LEN pass and the VALUE pass...