CVE-2026-31499

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix deadlock in l2capconndel l2capconndel calls canceldelayedworksync for both infotimer and idaddrtimer while holding conn-lock. However, the work functions l2capinfotimeout and l2capconnupdateidaddr both acqui...

CVE-2026-31499

CVE-2026-31499 affects the Linux kernel Bluetooth L2CAP code. The vulnerability stems from l2cap_conn_del() canceling delayed work (info_timer and id_addr_timer) while holding conn->lock, while the corresponding work functions (l2cap_info_timeout() and l2cap_conn_update_id_addr()) also acquire...

CVE-2026-31498

Linux kernel CVE-2026-31498 affects Bluetooth L2CAP by exposing memory leaks during reconfiguration (ERTM data structures) and a zero-valued max_pdu_size path that can lead to an infinite loop in l2cap_segment_sdu. Root cause: reconfiguration previously re-initialized ERTM state and NULL’d sdu wi...

Linux Distros Unpatched Vulnerability : CVE-2026-31510

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: L2CAP: Fix null-ptr-deref on l2capsockreadycb Before using sk pointer, check if it is null. Fix the following: KASAN: null-ptr-deref in range...

CVE-2026-31512: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2capecreddatarcv l2capecreddatarcv reads the SDU length field from skb-data using getunalignedle16 without first verifying that skb contains at least...

CVE-2026-31510: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref on l2capsockreadycb Before using sk pointer, check if it is null. Fix the following: KASAN: null-ptr-deref in range 0x0000000000000260-0x0000000000000267 CPU: 0 UID: 0 PID: 5985 Comm:...

PT-2026-34415

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A null pointer dereference exists in the Bluetooth L2CAP component. The issue occurs within the l2cap sock ready cb function when the sk pointer is used without verifying if it is null...

PT-2026-34403

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Bluetooth L2CAP component. The l2cap config req function processes CONFIG REQ for channels in BT CONNECTED state to support reconfiguration, such as MTU changes...

CVE-2026-31513: Out-of-bounds Read

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix stack-out-of-bounds read in l2capecredconnreq Syzbot reported a KASAN stack-out-of-bounds read in l2capbuildcmd that is triggered by a malformed Enhanced Credit Based Connection Request. The vulnerability...

CVE-2026-31498: Loop with Unreachable Exit Condition

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix ERTM re-init and zero pdulen infinite loop l2capconfigreq processes CONFIGREQ for channels in BTCONNECTED state to support L2CAP reconfiguration e.g. MTU changes. However, since both CONFINPUTDONE and...

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 an improper locking sequence in the l2capconndel function, potentially leading to a deadlock...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the lack of checking for empty pointers in l2capsockreadycb, potentially leading to uninitialized point...

Linux Distros Unpatched Vulnerability : CVE-2026-31498

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: L2CAP: Fix ERTM re-init and zero pdulen infinite loop l2capconfigreq processes CONFIGREQ for channels in BTCONNECTED state to support L2CAP...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-013653)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013653 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix potential user-after-free This fixes all instances of which requires to...

CVE-2026-31499: Improper Locking

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix deadlock in l2capconndel l2capconndel calls canceldelayedworksync for both infotimer and idaddrtimer while holding conn-lock. However, the work functions l2capinfotimeout and l2capconnupdateidaddr both acqui...

Linux Distros Unpatched Vulnerability : CVE-2026-31499

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: L2CAP: Fix deadlock in l2capconndel l2capconndel calls canceldelayedworksync for both infotimer and idaddrtimer while holding conn-lock. However, the...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013193)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013193 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capdisconnectreq,rsp Similar to commit d0be8347c623...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013245)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013245 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix potential user-after-free This fixes all instances of which requires to...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007293)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007293 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: fix null-ptr-deref in l2capchantimeout There is a race condition between...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007343)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007343 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2capsockcreate btsockalloc...