postgresql-cve-2026-14662

CVE-2026-14662 を追いかける — PostgreSQL 全文検索の範囲外書き込み脆弱性 PostgreSQL の全文検索データ型（tsvector / tsquery）に見つかった CVE-2026-14662 について、 修正前（18.4）と修正後（18.6）を Docker で同時に動かし、挙動の差を実際に観測した 記録です。 セキュリティ学習用にまとめたもので、発表資料も同梱しています。 この脆弱性のあらまし...

linux-kernel-codex-harness

Kernel Codex Harness 한국어 | English 研究ツール · 初回インポート: 2026年4月3日 · ドキュメント改訂: 2026年7月11日 中核哲学 — 外部シグナル モデル推論の外部で計算された再現可能な観測値に注意を向けさせ、優先度を証明と誤解してはならない。 プロジェクトの状態。...

Security update for libpcap

This update for libpcap fixes the following issues: CVE-2026-0799: the BPF interpreter does not validate values in BPF instructions that load/store a value from/to a scratch memory register and allows for OOB access bsc1279782. CVE-2026-6244: libpcap BPF interpreter for the 'div k' and 'mod k' AL...

CVE-2026-53360-POC

CVE-2026-53360: KVM SEV-SNP PSC 힙 버퍼 오버런 KVM의 SEV-SNP 페이지 상태 변경PSC 처리에서 발생하는 힙 읽기 및 쓰기 오버플로우에 대한 개념 증명입니다. 악의적인 SEV-SNP 게스트가 호스트 커널로 하여금 PSC 항목 배열을 슬랩 할당 영역 끝까지 탐색하게 만듭니다. 이로 인해 인접한 kmalloc-cg-32 객체의 레이아웃이 유출되고, 제어된 작은 값이 그 객체에 기록되며, 게스트는 이를 원하는 만큼 반복할 수 있습니다. 전체 분석:...

CVE-2025-5777

CVE-2025-5777 — Citrix NetScaler「CitrixBleed 2」メモリ情報漏えい Sentinel AI Defense による調査レポート。防御目的の分析のみ — 実働するエクスプロイト や PoC はここでは公開されていません。 初代 CitrixBleed の続編: NetScaler ADC/Gateway の認証エンドポイントにおける境界外読み取りで、 認証されていない攻撃者に対し、サーバーメモリの断片（セッショントークンを 含む）を HTTP レスポンスとしてそのまま返してしまいます。 📄 詳細レポート:...

GreenSection

GreenSection Nvidia GreenSection メモリ破壊 0day 脆弱性 複数のNVIDIAユーザーモードコンポーネントが、\BaseNamedObjects\52813408-3561-4705-820a-2b3b78be92ba 内のグローバルメモリセクションを全ユーザーに対してフルR/Wアクセスで共有しています。このセクションには重要なデータ構造が格納されていますが、実行時に問題が発生しないようにチェックが行われています。 残念ながら、このセクションの同じデータが実行時に再利用されるため、範囲外メモリ書き込みが発生します。...

CVE-2026-8451

🚨 CVE-2026-8451 - NetScaler SAML IdP 메모리 초과 읽기 취약점 인증 전 메모리 노출 취약점으로, Citrix NetScaler ADC 및 NetScaler Gateway가 SAML IdPIdentity Provider로 구성된 경우 영향을 받습니다. ✨ 개요 CVE-2026-8451 은 SAML IdP 요청 처리 중 Out-of-Bounds ReadCWE-125로 인한 높은 심각도 메모리 노출 취약점입니다. 인증되지 않은 공격자가 특수하게 조작된 SAML 요청을 보내 메모리 초과 읽기 를 유발하여...

Security update for libpcap

This update for libpcap fixes the following issues: CVE-2026-0799: the BPF interpreter does not validate values in BPF instructions that load/store a value from/to a scratch memory register and allows for OOB access bsc1279782. CVE-2026-6244: libpcap BPF interpreter for the 'div k' and 'mod k' AL...

CVE-2026-91786

A flaw was found in GNOME Shell. When processing icons from a remote search provider via D-Bus, the system fails to validate the icon's declared dimensions against the actual data buffer size. A malicious or compromised remote search provider could exploit this by providing oversized icon...

DEBIAN-CVE-2026-91786

A flaw was found in GNOME Shell. When processing icons from a remote search provider via D-Bus, the system fails to validate the icon's declared dimensions against the actual data buffer size. A malicious or compromised remote search provider could exploit this by providing oversized icon...

CVE-2026-91786

CVE-2026-91786 is an out-of-bounds read in GNOME Shell that occurs when processing icons from a remote search provider via D-Bus . The root cause is a missing validation of the icon's declared dimensions against the actual data buffer size. A malicious or compromised remote search provider can su...

CVE-2026-91786

A flaw was found in GNOME Shell. When processing icons from a remote search provider via D-Bus, the system fails to validate the icon's declared dimensions against the actual data buffer size. A malicious or compromised remote search provider could exploit this by providing oversized icon...

CVE-2026-91786

A flaw was found in GNOME Shell. When processing icons from a remote search provider via D-Bus, the system fails to validate the icon's declared dimensions against the actual data buffer size. A malicious or compromised remote search provider could exploit this by providing oversized icon...

postgis: PostGIS: Memory Disclosure and Denial of Service via Malformed FlatGeobuf Buffer

A flaw was found in PostGIS. This out-of-bounds read vulnerability allows a remote attacker to cause memory disclosure or a server crash. This occurs when a malformed FlatGeobuf buffer is supplied, as the FlatGeobuf property metadata decoder fails to verify that the string body is contained withi...

postgresql: PostgreSQL: Arbitrary code execution via integer wraparound in tsvector and tsquery functions

A flaw was found in PostgreSQL. An unprivileged database user can exploit an integer wraparound vulnerability in the tsvector and tsquery data type functions. By providing crafted large inputs, the server can be forced to undersize an allocation, leading to an out-of-bounds write. This could...

postgresql: PostgreSQL: Stack buffer overflow via OUT parameter count manipulation

A flaw was found in PostgreSQL. An object creator can exploit a stack buffer overflow vulnerability within the argument name matching component. By manipulating the OUT parameter count, an attacker can write limited arbitrary bytes 0x0 and 0x1 to server memory, which may lead to unknown impacts...

kernel: vhost: move vdpa group bound check to vhost_vdpa

A flaw was found in the Linux kernel's vhost subsystem. Specifically, a bug in the vdpasim component allows for an out-of-bounds write when a valid ASID Address Space ID is incorrectly assigned to a vDPA virtio Data Path Acceleration group. This could lead to memory corruption, potentially...

kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify

A flaw was found in the Linux kernel's octeontx2-af driver. A malicious Virtual Function VF attached to a Physical Function PF in switchdev representor mode can send a specially crafted REPEVENTNOTIFY message. This message contains an unvalidated pcifunc field, which can lead to an out-of-bounds...

kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change

A flaw was found in the Linux kernel's SLIP Serial Line Internet Protocol network component. A race condition exists during an MTU Maximum Transmission Unit change when the system reallocates receive buffers. This can allow a remote attacker to trigger an out-of-bounds write or write to a freed...

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

An update for kernel is now available for Red Hat Enterprise Linux 9. 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 th...