CVE-2026-31449

The CVE-2026-31449 entry concerns the Linux kernel ext4 extent code. A vulnerability was fixed in ext4_ext_correct_indexes where path[k].p_idx could point outside the valid index range if the on-disk eh_entries were corrupted, causing a slab-out-of-bounds read. The fix validates path[k].p_idx aga...

CVE-2026-31448

CVE-2026-31448 concerns the Linux kernel ext4 filesystem. The issue arises on mkdir/mknod when an extent insertion fails and ext4_ext_map_blocks() reclaims blocks without removing corresponding data from the extent tree, allowing the same physical block to be referenced by both directory and xatt...

CVE-2026-31448 ext4: avoid infinite loops caused by residual data

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid infinite loops caused by residual data On the mkdir/mknod path, when mapping logical blocks to physical blocks, if inserting a new extent into the extent tree fails in this example, because the file system disabled th...

CVE-2026-31448

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid infinite loops caused by residual data On the mkdir/mknod path, when mapping logical blocks to physical blocks, if inserting a new extent into the extent tree fails in this example, because the file system disabled th...

CVE-2026-31447

CVE-2026-31447 affects the Linux kernel ext4, where mounting a filesystem with bigalloc and s_first_data_block != 0 is rejected. The root cause is that this configuration is not supported, leading to a mount-time denial of access (DoS potential). Connected records show patches in Root: Debian 11/...

CVE-2026-31447

In the Linux kernel, the following vulnerability has been resolved: ext4: reject mount if bigalloc with sfirstdatablock != 0 bigalloc with sfirstdatablock != 0 is not supported, reject mounting it...

CVE-2026-31446 ext4: fix use-after-free in update_super_work when racing with umount

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in updatesuperwork when racing with umount Commit b98535d09179 "ext4: fix bugon in startthishandle during umount filesystem" moved ext4unregistersysfs before flushing ssbupdwork to prevent new error work...

CVE-2026-31446

CVE-2026-31446 is a Linux kernel/ext4 vulnerability describing a use-after-free in update_super_work during unmount races. The root cause: update_super_work calls ext4_notify_error_sysfs() -> sysfs_notify() after ext4_unregister_sysfs() frees the kobject, leading to a stale kernfs_node access....

CVE-2026-31446 ext4: fix use-after-free in update_super_work when racing with umount

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in updatesuperwork when racing with umount Commit b98535d09179 "ext4: fix bugon in startthishandle during umount filesystem" moved ext4unregistersysfs before flushing ssbupdwork to prevent new error work...

PT-2026-34351

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the ext4 file system during the unmount process. The problem occurs when update super work races with umount, specifically when ext4 notify error sysfs...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the ext4readInlinefolio function not properly handling inline data sizes exceeding PAGESIZE,...

PT-2026-34355

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ext4 file system where the ext4 inode attach jinode function publishes ei-jinode to concurrent users before jbd2 journal init jbd inode is completed. This allows a...

CVE-2026-31450: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: ext4: publish jinode after initialization ext4inodeattachjinode publishes ei-jinode to concurrent users. It used to set ei-jinode before jbd2journalinitjbdinode, allowing a reader to observe a non-NULL jinode with ivfsinode still...

CVE-2026-31449: Out-of-bounds Read

In the Linux kernel, the following vulnerability has been resolved: ext4: validate pidx bounds in ext4extcorrectindexes ext4extcorrectindexes walks up the extent tree correcting index entries when the first extent in a leaf is modified. Before accessing pathk.pidx-eiblock, there is no validation...

Linux Distros Unpatched Vulnerability : CVE-2026-31451

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ext4: replace BUGON with proper error handling in ext4readinlinefolio Replace BUGON with proper error handling when inline data size exceeds PAGESIZE. This...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-013694)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013694 advisory. In the Linux kernel, the following vulnerability has been resolved: ext4: fix inode leak in ext4xattrinodecreate on an error path There is issue as follows when do...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013765)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013765 advisory. In the Linux kernel, the following vulnerability has been resolved: ext4: fix potential memory leak in ext4fcrecordmodifiedinode As krealloc may return NULL, in this...

Linux Distros Unpatched Vulnerability : CVE-2026-31450

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ext4: publish jinode after initialization ext4inodeattachjinode publishes ei-jinode to concurrent users. It used to set ei-jinode before jbd2journalinitjbdinode...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the ext4extcorrectindexes function not verifying the pidx index boundaries, potentially leading t...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the ext4setattr function. When the truncation operation exceeds the inline capacity, the inline...