kernel: Linux kernel Bluetooth RFCOMM: Denial of Service via use-after-free in set_termios

A flaw was found in the Linux kernel's Bluetooth RFCOMM subsystem. A race condition in the rfcommttysettermios function allows a session to be freed while it is still actively in use. This use-after-free UAF vulnerability can be exploited by a local attacker. Successful exploitation leads to a...

kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind()

A flaw was found in the Linux kernel's Bluetooth RFCOMM Radio Frequency Communication subsystem. A race condition in the rfcommconnectind function, specifically during the handling of listener sockets, can lead to a use-after-free vulnerability. A local attacker could exploit this to cause a deni...

kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers

A flaw was found in the Linux kernel's Bluetooth RFCOMM Radio Frequency Communication subsystem. A malicious remote device could exploit this vulnerability by sending specially crafted, truncated Multiplexing Control Channel MCC frames. This lack of proper validation of incoming data length befor...

SUSE CVE-2026-90088

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: Validate MTU in rfcommapplypn to prevent infinite loop rfcommapplypn accepts the MTU value from a remote PN Parameter Negotiation frame without checking for zero. When the remote peer sends an MTU of zero, d-mt...

Linux Distros Unpatched Vulnerability : CVE-2026-90088

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: RFCOMM: Validate MTU in rfcommapplypn to prevent infinite loop rfcommapplypn accepts the MTU value from a remote PN Parameter Negotiation frame witho...

CVE-2026-90088 Bluetooth: RFCOMM: Validate MTU in rfcomm_apply_pn() to prevent infinite loop

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: Validate MTU in rfcommapplypn to prevent infinite loop rfcommapplypn accepts the MTU value from a remote PN Parameter Negotiation frame without checking for zero. When the remote peer sends an MTU of zero, d-mt...

EUVD-2026-81949

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: Validate MTU in rfcommapplypn to prevent infinite loop rfcommapplypn accepts the MTU value from a remote PN Parameter Negotiation frame without checking for zero. When the remote peer sends an MTU of zero, d-mt...

CVE-2026-90088: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: Validate MTU in rfcommapplypn to prevent infinite loop rfcommapplypn accepts the MTU value from a remote PN Parameter Negotiation frame without checking for zero. When the remote peer sends an MTU of zero, d-mt...

PT-2026-94436

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Bluetooth RFCOMM component where the rfcomm apply pn function accepts a Maximum Transmission Unit MTU value from a remote Parameter Negotiation PN frame without...

SUSE CVE-2026-89569

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: serialize security confirmation handling rfcommsecuritycfm looks up a session on sessionlist and then walks its DLC list without holding rfcommmutex. Since RFCOMM session teardown uses rfcommmutex, krfcommd can...

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

A NULL pointer dereference vulnerability exists in the Linux kernel on Linux, x86, and ARM platforms including networking and Bluetooth modules. This vulnerability is related to the /net/bluetooth/rfcomm/core.C file. This issue affects the Linux kernel version v2.6.12-rc2...

kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind()

A flaw was found in the Linux kernel's Bluetooth RFCOMM Radio Frequency Communication subsystem. A race condition in the rfcommconnectind function, specifically during the handling of listener sockets, can lead to a use-after-free vulnerability. A local attacker could exploit this to cause a deni...

kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers

A flaw was found in the Linux kernel's Bluetooth RFCOMM Radio Frequency Communication subsystem. A malicious remote device could exploit this vulnerability by sending specially crafted, truncated Multiplexing Control Channel MCC frames. This lack of proper validation of incoming data length befor...

Linux Distros Unpatched Vulnerability : CVE-2026-89569

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: RFCOMM: serialize security confirmation handling rfcommsecuritycfm looks up a session on sessionlist and then walks its DLC list without holding...

CVE-2026-89569

A flaw was found in the Linux kernel's Bluetooth RFCOMM subsystem. This vulnerability arises because the system does not properly manage memory when handling Bluetooth security confirmations. A race condition allows a part of the system to free memory that is still in use by another part, leading...

AZL-100721 CVE-2026-89569 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: serialize security confirmation handling rfcommsecuritycfm looks up a session on sessionlist and then walks its DLC list without holding rfcommmutex. Since RFCOMM session teardown uses rfcommmutex, krfcommd can...

DEBIAN-CVE-2026-89569

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: serialize security confirmation handling rfcommsecuritycfm looks up a session on sessionlist and then walks its DLC list without holding rfcommmutex. Since RFCOMM session teardown uses rfcommmutex, krfcommd can...

CVE-2026-89569

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: serialize security confirmation handling rfcommsecuritycfm looks up a session on sessionlist and then walks its DLC list without holding rfcommmutex. Since RFCOMM session teardown uses rfcommmutex, krfcommd can...

CVE-2026-89569

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: serialize security confirmation handling rfcommsecuritycfm looks up a session on sessionlist and then walks its DLC list without holding rfcommmutex. Since RFCOMM session teardown uses rfcommmutex, krfcommd can...

UBUNTU-CVE-2026-89569

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: serialize security confirmation handling rfcommsecuritycfm looks up a session on sessionlist and then walks its DLC list without holding rfcommmutex. Since RFCOMM session teardown uses rfcommmutex, krfcommd can...