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

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix leaking sk after socket release isosockkill tests !sockflagsk, SOCKZAPPED || sk-sksocket || sockflagsk, SOCKDEAD for early return, but this is always true since sockorphansk sets SOCKDEAD, so the sk reference...

CVE-2026-74536

In CVE-2026-74536, the Linux kernel Bluetooth ISO stack suffers a leak: iso_sock_kill() can leak the sk reference after socket release or when __iso_sock_close() does not set SOCK_ZAPPED, because sock_orphan(sk) marks SOCK_DEAD. The fix replaces SOCK_DEAD with a dedicated BT_SK_KILLED flag and ad...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021636)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021636 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: nftsocket: fix sk refcount leaks We must put 'sk' reference before returning. Tenable...

CVE-2025-21683 bpf: Fix bpf_sk_select_reuseport() memory leak

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix bpfskselectreuseport memory leak As pointed out in the original comment, lookup in sockmap can return a TCP ESTABLISHED socket. Such TCP socket may have had SOATTACHREUSEPORTEBPF set before it was ESTABLISHED. In other...