CVE-2023-2640-32629

Ubuntu 권한 상승: CVE-2023-2640 및 CVE-2023-32629 이 취약점은 특정 Ubuntu 커널에 영향을 미치는 로컬 권한 상승 취약점입니다. 비특권 사용자가 마운트된 파일에 특권 확장 속성을 설정하여 보안 검사를 우회하고 잠재적으로 상승된 권한을 얻을 수 있게 합니다. 이 취약점과 관련된 CVE는 CVE-2023-2640 및 CVE-2023-32629입니다. 영향을 받는 커널에는 다양한 Ubuntu 릴리스에 걸쳐 6.2.0, 5.19.0 및 5.4.0 버전이 포함됩니다. 이러한 취약점을 완화하려면...

CVE-2026-71222

A heap out-of-bounds read vulnerability exists in gfs2-utils , a tool for processing GFS2 (Global File System 2) filesystem images. The ea_num_ptrs field from on-disk extended attribute metadata is consumed without bounds validation, allowing a crafted GFS2 filesystem image to trigger a heap buff...

CVE-2026-71222 Gfs2-utils: gfs2-utils: heap out-of-bounds read via unchecked ea_num_ptrs in extended attribute processing

A heap out-of-bounds read vulnerability was found in gfs2-utils. The eanumptrs field from on-disk extended attribute metadata is consumed without bounds validation, causing a heap buffer over-read that may disclose sensitive memory contents or cause a crash when processing crafted GFS2 filesystem...

CVE-2021-3493-Exploit

CVE-2021-3493-Exploit CVE-2021-3493 の概念実証ローカル権限昇格エクスプロイト（C言語で記述）。 📌 説明 このリポジトリには、CVE-2021-3493 のエクスプロイトのC言語実装が含まれています。 これは、Linuxカーネルの OverlayFS 実装におけるローカル権限昇格（LPE） の脆弱性です。オーバーレイマウントでファイルが設定される際に、拡張属性（xattrs）の検証が不正確であるため、ローカルユーザーがrootアクセスを取得できるようになります。 🎯 影響を受けるバージョン Ubuntu 20.10 Ubuntu 20.04 LTS...

macOSTriageCollectionScript

macOSTriageCollectionScript macOS用のトリアージデータ収集スクリプトです。sysdiagnoseを利用し、いくつかの追加機能を加えて、調査に役立つトリアージデータを収集します。 このスクリプトは何を収集するのか？ 収集されるデータには以下が含まれます： sysdiagnose ：macOS/iOSオペレーティングシステムの各種バージョンに搭載されているユーティリティで、「システム全体の診断情報」を収集します。ここでは主に、収集されるログファイルとライブデータに使用されます。...

ALSA-2026:59380 Moderate: attr security update

The attr packages provide extended attributes, which can be used to store system objects like capabilities of executables and access control lists, as well as user objects. Security Fixes: attr: Symlink Traversal Privilege Escalation via getfattr and setfattr CVE-2026-54371 For more details about...

RHEL 10 : attr (RHSA-2026:59380)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:59380 advisory. The attr packages provide extended attributes, which can be used to store system objects like capabilities of executables and access control lists,...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: xfs: Eliminate attribute leaf freemap entries when empty Back in commit 2a2b5932db6758 “xfs: fix attribute leaf header freemap.size underflow”, Brian Foster observed that it’s possible for a small freemap at the end of the xattr...

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

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: Fixed the sanity check on ixattrnid in sanitycheck inode. syzbot reports a kernel bug as follows: F2FS-fs loop0: Mounted with checkpoint version = 48b305e4 --- Bugs reported by syzbot: - KASAN: Out-of-bounds access in...

Astra Linux – Vulnerability in tar

In GNU tar before version 1.35, mishandling of extension attributes in a PAX archive can cause the application to crash in xheader.c...

Astra Linux – Vulnerability in Linux

A flaw was discovered in the JFS filesystem code within the Linux kernel, which allows a local attacker to cause the system to panic by enabling the ability to set extended attributes. This can lead to memory corruption or an escalation of privileges. The most significant threat posed by this...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: fix invalid free tracking in ext4xattrMoveToBlock In ext4xattrMoveToBlock, the value of the extended attribute that we need to move to an external block may be allocated by kvmalloc if the value is stored in an external...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: xfs: fixed issues with freemap adjustments when adding xattrs to leaf blocks. Both xfs/592 and xfs/794 fail this assertion in the leaf block freemap adjustment code after approximately 20 minutes of execution on my test VMs...

Astra Linux – Vulnerability in Samba

The Samba vfsfruit module utilizes extended file attributes EA, xattr to enhance compatibility with Apple SMB clients and interoperability with Netatalk 3 AFP file servers. Samba versions prior to 4.13.17, 4.14.12, and 4.15.5, when vfsfruit was configured, allowed out-of-bounds heap read and writ...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ocfs2: fixed the issue with preserving cleanup for reflinks. The commit c06c303832ec “ocfs2: fixed the error where xattr array entries were not properly handled” does not handle all cases, and the cleanup of preserved xattr...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Initializing quotas for ‘old.inode’ in ‘ext4rename’. Syzbot identified the following issues: - ext4parseparam: swantextraisize=128 - ext4inodeinfoinit: swantextraisize=32 - ext4rename: old.inode=ffff88823869a2c8;...

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

In the Linux kernel, the following vulnerability has been resolved: f2fs: Explicitly terminate the xattr list with a null character. When setting an xattr, ensure that the xattr list is explicitly terminated with a null character. This eliminates the fragile assumption that the unused xattr space...

SUSE CVE-2026-53799

rsync before 3.5.0 contains a symlink race condition vulnerability that allows local attackers to cause rsync to apply arbitrary ACLs or extended attributes to unintended files by substituting a symlink at a predictable destination path between the file write and the subsequent aclsetfile or...

CVE-2026-74414

In the Linux kernel, the following vulnerability has been resolved: hfsplus: Remove the duplicate attr inode dirty marking action Syzbot reported a null-ptr-deref in 1. If the attributes file is not loaded during system mount, a trigger occurs 1 when setxattr is executed in userspace. Remove the...

UBUNTU-CVE-2026-74414

In the Linux kernel, the following vulnerability has been resolved: hfsplus: Remove the duplicate attr inode dirty marking action Syzbot reported a null-ptr-deref in 1. If the attributes file is not loaded during system mount, a trigger occurs 1 when setxattr is executed in userspace. Remove the...