Rocky Linux 9.6 主機已安裝的套件會受到 TuxCare ALMALINUX9.6：CLSA-2026：1783793262 公告中提及的多個弱點影響。

  - 已解決 Linux 核心中的下列弱點：rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when invoked from futex_requeue(). In the latter case waiter::task is not current, but remove_waiter() operates on current for the dequeue operation. That results in several problems: 1) the rbtree dequeue happens without waiter::task::pi_lock being held 2) the waiter task's pi_blocked_on state is not cleared, which leaves a dangling pointer primed for UAF around.
    3) rt_mutex_adjust_prio_chain() operates on the wrong top priority waiter task Use waiter::task instead of current in all related operations in remove_waiter() to cure those problems. [ tglx: Fixup rt_mutex_adjust_prio_chain(), add a comment and amend the changelog ] (CVE-2026-43499)

  - 已解決 Linux 核心中的下列弱點：eventpoll: fix ep_remove struct eventpoll / struct file UAF ep_remove() (via ep_remove_file()) cleared file->f_ep under file->f_lock but then kept using @file inside the critical section (is_file_epoll(), hlist_del_rcu() through the head, spin_unlock). A concurrent __fput() taking the eventpoll_release() fastpath in that window observed the transient NULL, skipped eventpoll_release_file() and ran to f_op->release / file_free(). For the epoll-watches-epoll case, f_op->release is ep_eventpoll_release() -> ep_clear_and_put() -> ep_free(), which kfree()s the watched struct eventpoll. Its embedded ->refs hlist_head is exactly where epi->fllink.pprev points, so the subsequent hlist_del_rcu()'s *pprev = next scribbles into freed kmalloc-192 memory. In addition, struct file is SLAB_TYPESAFE_BY_RCU, so the slot backing @file could be recycled by alloc_empty_file() -- reinitializing f_lock and f_ep -- while ep_remove() is still nominally inside that lock. The upshot is an attacker-controllable kmem_cache_free() against the wrong slab cache. Pin @file via epi_fget() at the top of ep_remove() and gate the critical section on the pin succeeding. With the pin held @file cannot reach refcount zero, which holds __fput() off and transitively keeps the watched struct eventpoll alive across the hlist_del_rcu() and the f_lock use, closing both UAFs. If the pin fails @file has already reached refcount zero and its __fput() is in flight. Because we bailed before clearing f_ep, that path takes the eventpoll_release() slow path into eventpoll_release_file() and blocks on ep->mtx until the waiter side's ep_clear_and_put() drops it. The bailed epi's share of ep->refcount stays intact, so the trailing ep_refcount_dec_and_test() in ep_clear_and_put() cannot free the eventpoll out from under eventpoll_release_file(); the orphaned epi is then cleaned up there. A successful pin also proves we are not racing eventpoll_release_file() on this epi, so drop the now-redundant re-check of epi->dying under f_lock. The cheap lockless READ_ONCE(epi->dying) fast-path bailout stays. (CVE-2026-46242)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

偵測

Rocky Linux 9.6 [TuxCare] 安全性更新：kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc 多個弱點（ALMALINUX9.6：CLSA-2026：1783793262）

high Nessus Plugin ID 359559

版本 1.4

版本 1.3

版本 1.2

版本 1.4 Oct 22, 2026, 10:08 AM Exploit attributes ("Exploited by malware" set to "True") Plugin Feed: 202610221008
版本 1.3 Oct 22, 2026, 12:02 AM CVE (set "CVE" coverage to "CVE-2026-43499,CVE-2026-46242") CVSSv2 score source (changed from "CVE-2026-43499" to "CVE-2026-46242") Detection (updated detection logic) Exploit attributes ("Exploited by malware" changed from "True" to none) Plugin metadata Plugin Feed: 202610220002
版本 1.2 Oct 2, 2026, 8:05 AM Exploit attributes ("Exploited by malware" set to "True") Plugin Feed: 202610020805

偵測

Rocky Linux 9.6 [TuxCare] 安全性更新：kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc 多個弱點 （ALMALINUX9.6：CLSA-2026：1783793262）

high Nessus Plugin ID 359559

版本 1.4

版本 1.3

版本 1.2

Rocky Linux 9.6 [TuxCare] 安全性更新：kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc 多個弱點（ALMALINUX9.6：CLSA-2026：1783793262）