CentOS Linux 8.4 [TuxCare] 安全性更新：bpftool / kernel / kernel-core / kernel-cross-headers / etc 多個弱點 （CENTOS8.4：CLSA-2024：1707478061）
high Nessus Plugin ID 366965
語言:
概要
CentOS Linux 主機缺少一個或多個安全性更新。說明
CentOS Linux 8.4 主機已安裝的套件會受到 TuxCare CENTOS8.4：CLSA-2024：1707478061 公告中提及的多個弱點影響。- 已解決 Linux 核心中的下列弱點：RDMA/cma: Ensure rdma_addr_cancel() happens before issuing more requests The FSM can run in a circle allowing rdma_resolve_ip() to be called twice on the same id_priv. While this cannot happen without going through the work, it violates the invariant that the same address resolution background request cannot be active twice. CPU 1 CPU 2 rdma_resolve_addr(): RDMA_CM_IDLE -> RDMA_CM_ADDR_QUERY rdma_resolve_ip(addr_handler) #1 process_one_req(): for #1 addr_handler(): RDMA_CM_ADDR_QUERY -> RDMA_CM_ADDR_BOUND mutex_unlock(&id_priv->handler_mutex); [.. handler still running ..] rdma_resolve_addr():
RDMA_CM_ADDR_BOUND -> RDMA_CM_ADDR_QUERY rdma_resolve_ip(addr_handler) !! two requests are now on the req_list rdma_destroy_id(): destroy_id_handler_unlock(): _destroy_id(): cma_cancel_operation():
rdma_addr_cancel() // process_one_req() self removes it spin_lock_bh(&lock);
cancel_delayed_work(&req->work); if (!list_empty(&req->list)) == true ! rdma_addr_cancel() returns after process_on_req #1 is done kfree(id_priv) process_one_req(): for #2 addr_handler():
mutex_lock(&id_priv->handler_mutex); !! Use after free on id_priv rdma_addr_cancel() expects there to be one req on the list and only cancels the first one. The self-removal behavior of the work only happens after the handler has returned. This yields a situations where the req_list can have two reqs for the same handle but rdma_addr_cancel() only cancels the first one. The second req remains active beyond rdma_destroy_id() and will use-after-free id_priv once it inevitably triggers. Fix this by remembering if the id_priv has called rdma_resolve_ip() and always cancel before calling it again. This ensures the req_list never gets more than one item in it and doesn't cost anything in the normal flow that never uses this strange error path. (CVE-2021-47391)
- 已解決 Linux 核心中的下列弱點：writeback: avoid use-after-free after removing device When a disk is removed, bdi_unregister gets called to stop further writeback and wait for associated delayed work to complete. However, wb_inode_writeback_end() may schedule bandwidth estimation dwork after this has completed, which can result in the timer attempting to access the just freed bdi_writeback. Fix this by checking if the bdi_writeback is alive, similar to when scheduling writeback work. Since this requires wb->work_lock, and wb_inode_writeback_end() may get called from interrupt, switch wb->work_lock to an irqsafe lock. (CVE-2022-49995)
- 在 6.4.12 之前的 Linux 核心中，drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c 的 amdgpu_cs_wait_all_fences 中存在隔離釋放後使用問題。(CVE-2023-51042)
- 在 6.4.5 之前的 Linux 核心中，drivers/gpu/drm/drm_atomic.c 在非封鎖 Atomic commit 和驅動程式卸載之間發生爭用情形時，會出現釋放後使用情形。(CVE-2023-51043)
- 在 6.6.8 之前的 Linux 核心中發現一個問題。由於 vcc_recvmsg 爭用情形，net/atm/ioctl.c 中的 do_vcc_ioctl 有釋放後使用情形弱點。(CVE-2023-51780)
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。
解決方案
根據 TuxCare 公告 CENTOS8.4：CLSA-2024：1707478061 中的指引更新受影響的套件。另請參閱
Plugin 詳細資訊
嚴重性: High
ID: 366965
檔案名稱: tuxcare_centos_8.4_CLSA-2024-1707478061.nasl
版本: 1.2
類型: Local
代理程式: unix
已發布: 2026/10/18
已更新: 2026/10/19
支援的感應器: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
風險資訊
VPR
風險因素: Critical
分數: 9.6
百分位數: 99.95
Vendor
Vendor Severity: Important
CVSS v2
風險因素: High
基本分數: 7.7
時間性分數: 6.7
媒介: CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C
CVSS 評分資料來源: CVE-2024-0565
CVSS v3
風險因素: High
基本分數: 7.8
時間性分數: 7.5
媒介: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
時間媒介: CVSS:3.0/E:H/RL:O/RC:C
CVSS 評分資料來源: CVE-2024-1086
弱點資訊
必要的 KB 項目: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/OS/extended-third-party
可被惡意程式利用: true
可輕鬆利用: Exploits are available
修補程式發佈日期: 2024/2/9
弱點發布日期: 2021/7/21
CISA 已知遭惡意利用弱點到期日: 2024/6/20
參考資訊
CVE: CVE-2021-47391, CVE-2022-49995, CVE-2023-51042, CVE-2023-51043, CVE-2023-51780, CVE-2023-6040, CVE-2023-6915, CVE-2024-0562, CVE-2024-0565, CVE-2024-0646, CVE-2024-0775, CVE-2024-1086
CLSA: 2024:1707478061