CVE-2026-53357 Bluetooth: fix UAF in l2cap_sock_cleanup_listen() vs l2cap_conn_del()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix UAF in l2capsockcleanuplisten vs l2capconndel btacceptdequeue unlinks a not-yet-accepted child from the parent accept queue and releasesocks it before returning, so the returned sk has no caller reference and is...

CVE-2026-53357

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix UAF in l2capsockcleanuplisten vs l2capconndel btacceptdequeue unlinks a not-yet-accepted child from the parent accept queue and releasesocks it before returning, so the returned sk has no caller reference and is...

CVE-2026-53357

CVE-2026-53357 affects the Linux kernel Bluetooth stack. Root cause: a race where a concurrent HCI disconnect can trigger l2cap_conn_del() to free a child socket via l2cap_sock_kill while cleanup_listen() still accesses it, causing a use-after-free (KASAN) in l2cap_sock_cleanup_listen() during cl...

Linux Distros Unpatched Vulnerability : CVE-2026-53357

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: fix UAF in l2capsockcleanuplisten vs l2capconndel btacceptdequeue unlinks a not- yet-accepted child from the parent accept queue and releasesocks it...

The vulnerability of the l2cap_sock_cleanup_listen() function in the Linux operating system allows a hacker to trigger a service failure.

The vulnerability of the l2capsockcleanuplisten function in the Linux operating system is related to the use of memory after it is freed. Exploiting this vulnerability could allow a remote attacker to cause a service failure...

CVE-2023-53673

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: call disconnect callback before deleting conn In hcicsdisconnect, we do hciconndel even if disconnection failed. ISO, L2CAP and SCO connections refer to the hciconn without hciconnget, so disconncfm must be...

CVE-2025-39860

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix use-after-free in l2capsockcleanuplisten syzbot reported the splat below without a repro. In the splat, a single thread calling btacceptdequeue freed sk and touched it after that. The root cause would be the racy...

CVE-2025-39860

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix use-after-free in l2capsockcleanuplisten syzbot reported the splat below without a repro. In the splat, a single thread calling btacceptdequeue freed sk and touched it after that. The root cause would be the racy...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a post-release reuse issue in the l2capsockcleanuplisten function, which could lead to memory corruption...

PT-2025-38567

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free vulnerability exists in the Bluetooth stack, specifically within the l2cap sock cleanup listen function. The issue arises from a race condition where a socket can be fre...