Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - page_pool修正 page_pool_recycle_in_ring 中的釋放後使用 syzbot 報告 page_pool_recycle_in_ring 中的 uaf 錯誤KASANlock_release+0x151/0xa30 kernel/locking/lockdep.c:5862 在 addr 讀取大小 8 中的slab釋放後使用ffff8880286045a0 by 工作 syz.0.284/6943 CPU: 0 UID: 0 PID: 6943 Comm: syz.0.284 未受污染的 6.13.0-rc3-syzkaller-gdfa94ce54f41 #0 硬體名稱: Google Google Compute Engine/Google Compute Engine, BIOS Google 09 /13/2024 呼叫追踪 <TASK> __dump_stack lib/dump_stack.c:94 [內嵌] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [內嵌] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 lock_release+0x151/0xa30 kernel/locking/lockdep.c:5862 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:165 [內嵌] _raw_spin_unlock_bh+0x1b/0x40 kernel/locking/ spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [內嵌] ptr_ring_produce_bh include/linux/ptr_ring.h:164 [內嵌] page_pool_recycle_in_ring net/core/page_pool.c:707 [內嵌] page_pool_put_unrefed_netmem+0x748/0xb00 net /core/page_pool.c:826 page_pool_put_netmem include/net/page_pool/helpers.h:323 [內嵌] page_pool_put_full_netmem include/net/page_pool/helpers.h:353 [內嵌] napi_pp_put_page+0x149/0x2b0 net/core/skbuff.c 1036 skb_pp_recycle net/core/skbuff.c:1047 [內嵌] skb_free_head net/core/skbuff.c:1094 [內嵌] skb_release_data+0x6c4/0x8a0 net/core/skbuff.c:1125 skb_re Lease_all net/core/skbuff.c:1190 [內嵌] __kfree_skb net/core/skbuff.c:1204 [內嵌] sk_skb_reason_drop+0x1c9/0x380 net/core/skbuff.c:1242 kfree_skb_reason include/linux/skbuff.h:1263 [內嵌] __skb_queue_purge_reason include/linux/skbuff.h:3343 [內嵌] 根本原因為
    page_pool_recycle_in_ring ptr_ring_produce spin_lock(&r->producer_lock);
    WRITE_ONCE(r->queue[r->producer++], ptr) // 將最後一頁回收至集區 page_pool_release page_pool_scrub page_pool_empty_ring ptr_ring_consume page_pool_return_page //釋放所有頁面 __page_pool_destroy free_percpu(pool->recycle_stats); free(pool) //釋放 spin_unlock(&r->producer_lock); //pool->ring uaf read recycle_stat_inc(pool, ring);頁面集區回收環中的最後一個頁面時page_pool 可釋放。將生產者鎖定障礙新增至 page_pool_release防止頁面集區在回收所有頁面之前釋放。未啟用 CONFIG_PAGE_POOL_STATS 時recycle_stat_inc() 為空這將觸發 Wempty-body 版本警告。新增集區 stat 巨集的定義以修正警告。 (CVE-2025-38129)

請注意，Nessus 依賴供應商報告的套件存在。

偵測

Linux Distros 未修補的弱點：CVE-2025-38129

high Nessus Plugin ID 246157

版本 1.32