CVE-2026-74536 — Bluetooth: ISO: fix leaking sk after socket release

Affected: Linux

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: ISO: fix leaking sk after socket release

iso_sock_kill() tests !sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket || sock_flag(sk, SOCK_DEAD) for early return, but this is always true since sock_orphan(sk) sets SOCK_DEAD, so the sk reference released by socket always leaks, iso_sock_destruct is never called.

The socket reference also leaks when __iso_sock_close() does not set SOCK_ZAPPED, since iso_conn_del() does not call iso_sock_kill() after zapping.

Fix by replacing SOCK_DEAD by BT_SK_KILLED flag that is not used for something else, and lock_sock to ensure iso_sock_kill() puts sk only after socket release only once. Release and iso_conn_del may run concurrently. Call iso_sock_kill() from iso_conn_del() to clean sk up after zapping.

Remove call to iso_sock_kill() from iso_sock_close(), as it's generally no-op there.

USN-8886-1 — linux-nvidia-tegra vulnerabilities

Affected: Ubuntu:24.04:LTS: linux-nvidia-tegra

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - NVDIMM (Non-Volatile Memory Device) drivers; - Handshake API; - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - OpenRISC architecture; - PowerPC architecture; - S390 architecture; - x86 architecture; - Block layer subsystem; - Cryptographic API; - Intel NPU Driver; - Android drivers; - Rados block device (RBD) driver; - Bluetooth drivers; - Hardware random number generator core; - TPM device driver; - CPU frequency scaling framework; - Hardware crypto device drivers; - DMA engine subsystem; - FireWire subsystem; - Arm Firmware Framework for ARMv8-A(FFA); - GPIO subsystem; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - CoreSight HW tracing drivers; - I2C subsystem; - IIO ADC drivers; - IIO subsystem; - InfiniBand drivers; - Input Device core drivers; - Input Device (Mouse) drivers; - IOMMU subsystem; - Multiple devices driver; - Media drivers; - Multifunction device drivers; - Fastrpc Driver; - Amazon Nitro Secure Module driver; - MMC subsystem; - MTD block device drivers; - Ethernet bonding driver; - Network drivers; - Mellanox network drivers; - Texas Instruments network drivers; - NTB driver; - NVME drivers; - NVMEM (Non Volatile Memory) drivers; - Parport drivers…

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CVE-2026-74536 — Bluetooth: ISO: fix leaking sk after socket release

USN-8886-1 — linux-nvidia-tegra vulnerabilities