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 in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: A stack-out-of-bounds read occurred in l2capecredconnreq. Syzbot reported a KASAN stack-out-of-bounds read in l2capbuildcmd, which is triggered by a malformed Enhanced Credit Based Connection Request. The...

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 6.12

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Access to chan-conn safely in get/setsockopt Since commit b66774b48dd9 “Bluetooth: L2CAP: Fix UAF in channel timeout by holding conn ref”, l2capchan::conn still holds a reference and remains non-NULL even after...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Reject accept queue add unless BTLISTEN No new sk objects should be added to the parent socket’s accept queue after the last l2capsockcleanuplisten function has run in l2capsockteardowncb, and after the state...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fixed a race condition between l2capsockcleanuplisten and putchan. For L2CAP sockets that do not own the sk-sksocket, reading from l2cappisk-chan may cause a race condition with l2capsockkill and...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: Fixed UAF in btacceptdequeue. btacceptget takes a temporary reference before releasing the accept queue lock. btacceptdequeue currently releases that reference before btacceptunlink, leaving only the queue reference...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fixed a UAF issue in channel timeout by holding the conn reference. The l2capchantimeout function runs asynchronously and accesses chan-conn. If the connection is terminated while the timer is running or...

CVE-2026-43134

A flaw was found in the Linux kernel's Bluetooth Low Energy LE Logical Link Control and Adaptation Protocol L2CAP. A missing check for encryption key size when processing connection requests could allow a remote attacker to send a malformed request. This could lead to a protocol violation,...

CVE-2026-43134

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix missing key size check for L2CAPLECONNREQ This adds a check for encryption key size upon receiving L2CAPLECONNREQ which is required by L2CAP/LE/CFC/BV-15-C which expects L2CAPCRLEBADKEYSIZE...

CVE-2026-43134: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix missing key size check for L2CAPLECONNREQ This adds a check for encryption key size upon receiving L2CAPLECONNREQ which is required by L2CAP/LE/CFC/BV-15-C which expects L2CAPCRLEBADKEYSIZE...

EUVD-2026-27358

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix type confusion in l2capecredreconfrsp l2capecredreconfrsp casts the incoming data to struct l2capecredconnrsp the ECRED connection response, 8 bytes with result at offset 6 instead of struct...

CVE-2026-43062 Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix type confusion in l2capecredreconfrsp l2capecredreconfrsp casts the incoming data to struct l2capecredconnrsp the ECRED connection response, 8 bytes with result at offset 6 instead of struct...

CVE-2026-43062

CVE-2026-43062 concerns the Linux kernel Bluetooth L2CAP path, where l2cap_ecred_reconf_rsp() incorrectly casts incoming data to struct l2cap_ecred_conn_rsp instead of struct l2cap_ecred_reconf_rsp. This type confusion causes: (1) the length check to require 8 bytes instead of 2, rejecting valid ...

CVE-2026-43062 Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix type confusion in l2capecredreconfrsp l2capecredreconfrsp casts the incoming data to struct l2capecredconnrsp the ECRED connection response, 8 bytes with result at offset 6 instead of struct...

PT-2026-37065

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A type confusion issue exists in the Bluetooth L2CAP component within the l2cap ecred reconf rsp function. The function incorrectly casts incoming data to struct l2cap ecred conn rsp...

CVE-2026-43062: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix type confusion in l2capecredreconfrsp l2capecredreconfrsp casts the incoming data to struct l2capecredconnrsp the ECRED connection response, 8 bytes with result at offset 6 instead of struct...

CLSA-2026-1777614769 kernel: Fix of 13 CVEs

crypto: algifaead - Fix minimum RX size check for decryption - crypto: afalg - Fix page reassignment overflow in afalgpulltsgl - crypto: authencesn - Fix src offset when decrypting in-place - crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption - crypto: authenc - use...

Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv()

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SUSE CVE-2026-31498

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...