UBUNTU-CVE-2022-50193

In the Linux kernel, the following vulnerability has been resolved: erofs: wake up all waiters after zerofslzmahead ready When the user mounts the erofs second times, the decompression thread may hung. The problem happens due to a sequence of steps like the following: 1 Task A called...

UBUNTU-CVE-2022-50090

In the Linux kernel, the following vulnerability has been resolved: btrfs: replace BTRFSMAXEXTENTSIZE with fsinfo-maxextentsize On zoned filesystem, data write out is limited by maxzoneappendsize, and a large ordered extent is split according the size of a bio. OTOH, the number of extents to be...

CVE-2022-50205

The CVE-2022-50205 entry corresponds to a Linux kernel vulnerability in ext2 that adds validity checks for inode counts. The root cause is that inodes stored in the superblock must match the computed value from inodes-per-group, and there must be at least one block worth of inodes per group; thes...

CVE-2022-50205 ext2: Add more validity checks for inode counts

In the Linux kernel, the following vulnerability has been resolved: ext2: Add more validity checks for inode counts Add checks verifying number of inodes stored in the superblock matches the number computed from number of inodes per group. Also verify we have at least one block worth of inodes pe...

CVE-2022-50205 ext2: Add more validity checks for inode counts

In the Linux kernel, the following vulnerability has been resolved: ext2: Add more validity checks for inode counts Add checks verifying number of inodes stored in the superblock matches the number computed from number of inodes per group. Also verify we have at least one block worth of inodes pe...

CVE-2022-50090

CVE-2022-50090 relates to the Linux kernel/Btrfs: it replaces the hard-coded limit BTRFS_MAX_EXTENT_SIZE with fs_info->max_extent_size. On zoned filesystems, data writes are limited by max_zone_append_size, and a large ordered extent can trigger more extents than expected, causing the estimato...

CVE-2022-50090 btrfs: replace BTRFS_MAX_EXTENT_SIZE with fs_info->max_extent_size

In the Linux kernel, the following vulnerability has been resolved: btrfs: replace BTRFSMAXEXTENTSIZE with fsinfo-maxextentsize On zoned filesystem, data write out is limited by maxzoneappendsize, and a large ordered extent is split according the size of a bio. OTOH, the number of extents to be...

CVE-2022-50090 btrfs: replace BTRFS_MAX_EXTENT_SIZE with fs_info->max_extent_size

In the Linux kernel, the following vulnerability has been resolved: btrfs: replace BTRFSMAXEXTENTSIZE with fsinfo-maxextentsize On zoned filesystem, data write out is limited by maxzoneappendsize, and a large ordered extent is split according the size of a bio. OTOH, the number of extents to be...

CVE-2022-50021 ext4: block range must be validated before use in ext4_mb_clear_bb()

In the Linux kernel, the following vulnerability has been resolved: ext4: block range must be validated before use in ext4mbclearbb Block range to free is validated in ext4freeblocks using ext4inodeblockvalid and then it's passed to ext4mbclearbb. However in some situations on bigalloc file syste...

CVE-2022-50021

CVE-2022-50021 documents a Linux kernel ext4 bug where a validated block range for freeing blocks could be altered after validation on bigalloc filesystems, potentially triggering a kernel BUG in ext4_free_blocks() / ext4_mb_clear_bb(). The issue arises because the range may be adjusted after val...

CVE-2022-50020 ext4: avoid resizing to a partial cluster size

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid resizing to a partial cluster size This patch avoids an attempt to resize the filesystem to an unaligned cluster boundary. An online resize to a size that is not integral to cluster size results in the last iteration...

CVE-2022-50020 ext4: avoid resizing to a partial cluster size

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid resizing to a partial cluster size This patch avoids an attempt to resize the filesystem to an unaligned cluster boundary. An online resize to a size that is not integral to cluster size results in the last iteration...

CVE-2022-50020

CVE-2022-50020 affects the Linux kernel ext4 filesystem: the patch prevents online resizing to an unaligned/partial cluster boundary. The issue could cause the last resize iteration to grow the filesystem by a negative amount, tripping a BUG_ON and leaving the in-memory superblock corrupted. Conn...

CVE-2022-50009 f2fs: fix null-ptr-deref in f2fs_get_dnode_of_data

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix null-ptr-deref in f2fsgetdnodeofdata There is issue as follows when test f2fs atomic write: F2FS-fs loop0: Can't find valid F2FS filesystem in 2th superblock F2FS-fs loop0: invalid crcoffset: 0 F2FS-fs loop0:...

CVE-2025-38059 btrfs: avoid NULL pointer dereference if no valid csum tree

In the Linux kernel, the following vulnerability has been resolved: btrfs: avoid NULL pointer dereference if no valid csum tree BUG When trying read-only scrub on a btrfs with rescue=idatacsums mount option, it will crash with the following call trace: BUG: kernel NULL pointer dereference, addres...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the btrfs file system's use of the fixed value BTRFSMAXEXTENTSIZE to calculate metadata reservations, which...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from ext4 triggering a warning when bmap and write compete...

PT-2025-26119 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A vulnerability in the Linux kernel has been resolved, related to the erofs filesystem. The issue occurs when the user mounts the erofs filesystem for the second time, which may cause...

PT-2025-26131 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The issue concerns the Linux kernel, specifically the ext2 filesystem. It involves adding more validity checks for inode counts to prevent crashes on corrupted filesystems. The checks...

UBUNTU-CVE-2025-6019

A Local Privilege Escalation LPE vulnerability was found in libblockdev. Generally, the "allowactive" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an "allowactive" user on a syst...