CVE-2023-0386-OverlayFS

CVE-2023-0386 - OverlayFS / FUSE オリジナルの CVE ソースは xkaneiki によるもの: https://github.com/xkaneiki/CVE-2023-0386/tree/main エクスプロイトを1つのシェルで実行できるように書き直しました（元のエクスプロイトは2つのシェルが必要です）。 root@kitploit: Compile make all Create mount point for fuse filesystem mkdir -p /tmp/fusepwn/lower Start fuse which serves a...

CVE-2023-32629

CVE-2023-32629 — OverlayFS ローカル完全権限昇格 OverlayFS ローカル権限昇格 - 完全な解説から完全な昇格まで 教育および許可されたセキュリティ研究目的に限ります。 重要度: 高 種類: ローカル権限昇格 LPE 影響を受ける: Ubuntu カーネル 2023年5月/6月のパッチより前 必要条件: 非特権ユーザ名前空間が有効 Ubuntu ではデフォルトで有効 目次 概要 背景となる概念 試行1 — 単純なSUIDコピー 試行2 — 名前空間内のシェル 実用的なエクスプロイト なぜ機能するのか まとめ 概要 CVE-2023-32629 は Linu...

CVE-2023-0386_POC

チーム CVE-MD このリポジトリはCVE-2023-0386の概念実証を提供します： https://nvd.nist.gov/vuln/detail/CVE-2023-0386 チームメンバー：Bǎnicǎ Dragoș-Marius と Borsos Matheas-Roland こちらが動画です： https://www.youtube.com/watch?v=Ikux1rjIYP0 CVE-2023-0386 — Linux OverlayFS ローカル特権昇格 PoC 概要 このリポジトリは、CVE-2023-0386...

Astra Linux – Vulnerabilities in Linux-6.1, Linux-5.15, Linux-5.10

In the Linux kernel, the following vulnerabilities have been resolved: ovl: Fixed a UAF Use-After-Free in ovldentryupdatereval by moving dput before ovllinkup. The issue arose because dputupper was called before ovldentryupdatereval, while upper-dflags was still accessed in ovldentryremote. Movin...

CVE-2026-52791 fuse-overlayfs release-1.x preserves SUID/SGID bits after truncate/open(O_TRUNC)

fuse-overlayfs is an implementation of overlayfs in FUSE for rootless containers. Prior to 1.17, the release-1.x C branch preserves SUID and SGID mode bits in main.c during openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

Exploit for Improper Ownership Management in Debian Debian_Linux

CVE-2023-0386 - OverlayFS / FUSE Original CVE source written...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ovl: The WARNON message was removed from the ovlverifyarea function. syzbot encountered an assertion issue within the copyupdata loop. It appears that this issue is caused by a lower file whose size is being changed under...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ovl: Fixed a NULL pointer dereference issue in the copy-up warning message. This patch addresses a NULL pointer dereference that caused a recently introduced warning message to fail...

Exploit for Incorrect Authorization in Canonical Ubuntu_Linux

CVE-2023-32629 — OverlayFS Local Full Privilege Escalation Ove...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001828)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001828 advisory. fs/overlayfs/copyup.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service dentry reference le...

UBUNTU-CVE-2025-40200

In the Linux kernel, the following vulnerability has been resolved: Squashfs: reject negative file sizes in squashfsreadinode Syskaller reports a "WARNING in ovlcopyupfile" in overlayfs. This warning is ultimately caused because the underlying Squashfs file system returns a file with a negative...

Linux Distros Unpatched Vulnerability : CVE-2024-27069

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: ovl: relax WARNON in ovlverifyarea syzbot hit an assertion in copy up data loop which looks...

CLSA-2025-1753085842 Fix of 10 CVEs

CVE-url: https://ubuntu.com/security/CVE-2024-46787 - userfaultfd: fix checks for huge PMDs CVE-url: https://ubuntu.com/security/CVE-2025-37798 - schhtb: make htbqlennotify idempotent - schdrr: make drrqlennotify idempotent - schhfsc: make hfscqlennotify idempotent - schqfq: make qfqqlennotify...

SUSE CVE-2022-48741

In the Linux kernel, the following vulnerability has been resolved: ovl: fix NULL pointer dereference in copy up warning This patch is fixing a NULL pointer dereference to get a recently introduced warning message working...

DEBIAN-CVE-2022-48741

In the Linux kernel, the following vulnerability has been resolved: ovl: fix NULL pointer dereference in copy up warning This patch is fixing a NULL pointer dereference to get a recently introduced warning message working...

CVE-2022-48741

In the Linux kernel, the following vulnerability has been resolved: ovl: fix NULL pointer dereference in copy up warning This patch is fixing a NULL pointer dereference to get a recently introduced warning message working...

UBUNTU-CVE-2022-48741

In the Linux kernel, the following vulnerability has been resolved: ovl: fix NULL pointer dereference in copy up warning This patch is fixing a NULL pointer dereference to get a recently introduced warning message working...

CVE-2022-48741 ovl: fix NULL pointer dereference in copy up warning

In the Linux kernel, the following vulnerability has been resolved: ovl: fix NULL pointer dereference in copy up warning This patch is fixing a NULL pointer dereference to get a recently introduced warning message working...

SUSE CVE-2024-27069

In the Linux kernel, the following vulnerability has been resolved: ovl: relax WARNON in ovlverifyarea syzbot hit an assertion in copy up data loop which looks like it is the result of a lower file whose size is being changed underneath overlayfs. This type of use case is documented to cause...

UBUNTU-CVE-2024-27069

In the Linux kernel, the following vulnerability has been resolved: ovl: relax WARNON in ovlverifyarea syzbot hit an assertion in copy up data loop which looks like it is the result of a lower file whose size is being changed underneath overlayfs. This type of use case is documented to cause...