CVE-2025-40190

In the Linux kernel, the following vulnerability has been resolved: ext4: guard against EA inode refcount underflow in xattr update syzkaller found a path where ext4xattrinodeupdateref reads an EA inode refcount that is already ref underflow: refcount=-1 refchange=-1 EXT4-fs warning: eainode dec...

CVE-2025-40186

In the Linux kernel, the following vulnerability has been resolved: tcp: Don't call reqskfastopenremove in tcpconnrequest. syzbot reported the splat below in tcpconnrequest. 0 If a listener is closed while a TFO socket is being processed in tcpconnrequest, inetcskreqskqueueadd does not set reqsk-...

DEBIAN-CVE-2025-40190

In the Linux kernel, the following vulnerability has been resolved: ext4: guard against EA inode refcount underflow in xattr update syzkaller found a path where ext4xattrinodeupdateref reads an EA inode refcount that is already ref underflow: refcount=-1 refchange=-1 EXT4-fs warning: eainode dec...

AZL-70091 CVE-2025-40190 affecting package kernel for versions less than 6.6.117.1-1

In the Linux kernel, the following vulnerability has been resolved: ext4: guard against EA inode refcount underflow in xattr update syzkaller found a path where ext4xattrinodeupdateref reads an EA inode refcount that is already ref underflow: refcount=-1 refchange=-1 EXT4-fs warning: eainode dec...

UBUNTU-CVE-2025-40186

In the Linux kernel, the following vulnerability has been resolved: tcp: Don't call reqskfastopenremove in tcpconnrequest. syzbot reported the splat below in tcpconnrequest. 0 If a listener is closed while a TFO socket is being processed in tcpconnrequest, inetcskreqskqueueadd does not set reqsk-...

UBUNTU-CVE-2025-40190

In the Linux kernel, the following vulnerability has been resolved: ext4: guard against EA inode refcount underflow in xattr update syzkaller found a path where ext4xattrinodeupdateref reads an EA inode refcount that is already ref underflow: refcount=-1 refchange=-1 EXT4-fs warning: eainode dec...

CVE-2025-40190

CVE-2025-40190 affects the Linux kernel ext4: EA inode refcount underflow during xattr updates. The root cause is in ext4_xattr_inode_update_ref(), where a non-positive refcount could be decremented (ref_change -1), leading to underflow and errors. The fix enforces that if the current refcount is...

CVE-2025-40190 ext4: guard against EA inode refcount underflow in xattr update

In the Linux kernel, the following vulnerability has been resolved: ext4: guard against EA inode refcount underflow in xattr update syzkaller found a path where ext4xattrinodeupdateref reads an EA inode refcount that is already ref underflow: refcount=-1 refchange=-1 EXT4-fs warning: eainode dec...

CVE-2025-40190

In the Linux kernel, the following vulnerability has been resolved: ext4: guard against EA inode refcount underflow in xattr update syzkaller found a path where ext4xattrinodeupdateref reads an EA inode refcount that is already ref underflow: refcount=-1 refchange=-1 EXT4-fs warning: eainode dec...

CVE-2025-40186

CVE-2025-40186 is a Linux kernel vulnerability described for Unity/Linux kernels: when handling TCP Fast Open (TFO), a call to reqsk_fastopen_remove() in tcp_conn_request() can trigger refcount underflow and double-free of the request_sockets object. The fix removes reqsk_fastopen_remove() from t...

CVE-2025-40186

In the Linux kernel, the following vulnerability has been resolved: tcp: Don't call reqskfastopenremove in tcpconnrequest. syzbot reported the splat below in tcpconnrequest. 0 If a listener is closed while a TFO socket is being processed in tcpconnrequest, inetcskreqskqueueadd does not set reqsk-...

kernel: powerpc/xive: Fix refcount leak in xive_spapr_init

In the Linux kernel, the following vulnerability has been resolved: powerpc/xive: Fix refcount leak in xivespaprinit offindcompatiblenode returns a node pointer with refcount incremented, we should use ofnodeput on it when done. Add missing ofnodeput to avoid refcount leak...

kernel: powerpc/xics: fix refcount leak in icp_opal_init()

In the Linux kernel, the following vulnerability has been resolved: powerpc/xics: fix refcount leak in icpopalinit The offindcompatiblenode function returns a node pointer with refcount incremented, use ofnodeput on it when done...

kernel: blk-cgroup: Fix class @block_class's subsystem refcount leakage

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: Fix class @blockclass's subsystem refcount leakage blkcgfillrootiostats iterates over @blockclass's devices by classdeviterinit|next, but does not end iterating with classdeviterexit, so causes the class's subsystem...

kernel: ipvlan: Fix use-after-free in ipvlan_get_iflink().

In the Linux kernel, the following vulnerability has been resolved: ipvlan: Fix use-after-free in ipvlangetiflink. syzbot presented an use-after-free report 0 regarding ipvlan and linkwatch. ipvlan does not hold a refcnt of the lower device unlike vlan and macvlan. If the linkwatch work is...

OESA-2025-2636 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix possible data races in gfs2showoptions Some fields such as gtlogdsecs of the struct gfs2tune are accessed without holding the lock gtspin in...

OESA-2025-2632 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: SUNRPC: make sure cache entry active before cacheshow The function cshow was called with protection from RCU. This only ensures that cp will not be freed...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990442)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990442 advisory. In the Linux kernel, the following vulnerability has been resolved: video: fbdev: clcdfb: Fix refcount leak in clcdfbofvramsetup ofparsephandle returns a node pointe...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990454)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990454 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/xics: fix refcount leak in icpopalinit The offindcompatiblenode function returns a node...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990390)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990390 advisory. In the Linux kernel, the following vulnerability has been resolved: soc: rockchip: Fix refcount leak in rockchipgrfinit offindmatchingnodeandmatch returns a node...