CVE-2026-45836

The CVE-2026-45836 vulnerability affects the Linux kernel Bluetooth L2CAP code and stems from a missing NULL guard in l2cap_sock_get_sndtimeo_cb(), which can cause a null pointer dereference. The issue is resolved by adding the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_s...

CVE-2026-45836 Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndtimeo_cb()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2capsockgetsndtimeocb Add the same NULL guard already present in l2capsockresumecb and l2capsockreadycb...

CVE-2026-45835 Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_connection_cb()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2capsocknewconnectioncb Add the same NULL guard already present in l2capsockresumecb and l2capsockreadycb...

CVE-2026-45834

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2capsockstatechangecb Add the same NULL guard already present in l2capsockresumecb and l2capsockreadycb...

CVE-2026-45834 Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2capsockstatechangecb Add the same NULL guard already present in l2capsockresumecb and l2capsockreadycb...

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 a lack of null pointer checking in the l2capsockgetsndtimeocb function within the Bluetooth L2CAP...

PT-2026-43304

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A NULL-pointer dereference exists in the Bluetooth L2CAP subsystem, specifically within the l2cap sock get sndtimeo cb function. This issue can lead to kernel crashes and a denial of...

OESA-2026-2419 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate L2CAPINFORSP payload length before access l2capinformationrsp checks that cmdlen covers the fixed l2capinforsp header type + result, 4...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fixed use-after-free issue Fixed a potential use-after-free in l2caplecommandrej...

Astra Linux – Vulnerability in Linux 5.10, Linux

A vulnerability classified as critical was discovered in the Linux kernel. The vulnerability affects the function l2capreassemblesdu in the file net/bluetooth/l2capcore.c of the Bluetooth component. This vulnerability stems from improper memory management, leading to an attempt to reuse freed...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fixed a memory leak in vhciwrite Syzkaller reported a memory leak as follows: ==================================== BUG: Memory leak Unreferenced object 0xffff88810d81ac00 size 240: ... Hex dump first 32 bytes: 0...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fixed a use-after-free caused by l2capreassemblesdu. Fixed a race condition between the following two processes that run parallelly: 1. l2capreassemblesdu - chan-ops-recv l2capsockrecvcb - sockqueuercvskb. 2...

Astra Linux – Vulnerability in Linux 5.10, Linux

There is a known vulnerability in the l2capparseconfreq function of the Linux kernel’s net/bluetooth/l2capcore.c file, which can be exploited to remotely leak kernel pointers. We recommend upgrading to a later commit:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: In hcievent, there is a callback for “call disconnect” that occurs before the connection is deleted. In hcicsdisconnect, we call hciconndel even if the disconnection fails. ISO, L2CAP, and SCO connections refer to t...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: A use-after-free issue was addressed in l2capunregisteruser. After the commit ab4eedb790ca “Bluetooth: L2CAP: Fix corrupted list in hcichandel”, l2capconndel uses conn-lock to protect access to conn-users...

Astra Linux – Vulnerability in Linux 5.10, Linux

There are use-after-free vulnerabilities in the net/bluetooth/l2capcore.c files, specifically in the l2capconnect and l2capleconnectreq functions. These vulnerabilities may allow code execution and the leakage of kernel memory remotely via Bluetooth. A remote attacker can execute code that leaks...

Astra Linux – Vulnerability in Linux 5.10, Linux

A vulnerability, classified as critical, was discovered in the Linux kernel. The affected function is l2capconndel in the file net/bluetooth/l2capcore.c of the Bluetooth component. This vulnerability allows for exploitation after the memory allocation has been freed. It is recommended that patche...

Astra Linux – Vulnerability in Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fixed a division by zero issue in l2capleflowctlinit. l2capleflowctlinit may cause both a division by zero and an integer overflow, as hdev-lemtu may not fall within the valid range. The MTU value was moved...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fixed an UAF in l2capconnect Reported by Syzbot BUG: KASAN: Use of a slab object after a free call in l2capconnectconstprop.0+0x10d8/0x1270 net/bluetooth/l2capcore.c:3949 Read of size 8 at address...

Astra Linux – Vulnerability in Linux 5.10, Linux

A issue was discovered in the Linux kernel through version 6.0.10. In the l2capconfigreq function within net/bluetooth/l2capcore.c, there is an integer wraparound occurring when processing L2CAPCONFREQ packets...