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。

  - 在 Linux 核心中，已解決下列弱點： net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events After the blamed commit, we started doing this dereference for every NETDEV_CHANGEUPPER and NETDEV_PRECHANGEUPPER event in the system. static inline struct dsa_port *dsa_user_to_port(const struct net_device *dev) { struct dsa_user_priv *p = netdev_priv(dev); return p->dp; } Which is obviously bogus, because not all net_devices have a netdev_priv() of type struct dsa_user_priv. But struct dsa_user_priv is fairly small, and p->dp means dereferencing 8 bytes starting with offset 16. Most drivers allocate that much private memory anyway, making our access not fault, and we discard the bogus data quickly afterwards, so this wasn't caught. But the dummy interface is somewhat special in that it calls alloc_netdev() with a priv size of 0. So every netdev_priv() dereference is invalid, and we get this when we emit a NETDEV_PRECHANGEUPPER event with a VLAN as its new upper: $ ip link add dummy1 type dummy $ ip link add link dummy1 name dummy1.100 type vlan id 100 [ 43.309174] ================================================================== [ 43.316456] BUG:
    KASAN: slab-out-of-bounds in dsa_user_prechangeupper+0x30/0xe8 [ 43.323835] Read of size 8 at addr ffff3f86481d2990 by task ip/374 [ 43.330058] [ 43.342436] Call trace: [ 43.366542] dsa_user_prechangeupper+0x30/0xe8 [ 43.371024] dsa_user_netdevice_event+0xb38/0xee8 [ 43.375768] notifier_call_chain+0xa4/0x210 [ 43.379985] raw_notifier_call_chain+0x24/0x38 [ 43.384464]
    __netdev_upper_dev_link+0x3ec/0x5d8 [ 43.389120] netdev_upper_dev_link+0x70/0xa8 [ 43.393424] register_vlan_dev+0x1bc/0x310 [ 43.397554] vlan_newlink+0x210/0x248 [ 43.401247] rtnl_newlink+0x9fc/0xe30 [ 43.404942] rtnetlink_rcv_msg+0x378/0x580 Avoid the kernel oops by dereferencing after the type check, as customary. (CVE-2024-26596)

請注意，Nessus 依賴供應商報告的套件存在。

遠端 Debian 11 主機上安裝的多個套件受到 dla-4102 公告中提及的多個弱點影響。

    - ------------------------------------------------- ------------------------------------ Debian LTS 公告 DLA-4102-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/Ben Hutchings 2025 年 3 月 31 日 https://wiki.debian.org/LTS-------------------------------------------------------------------------

    套件: linux-6.1 版本: 6.1.129-1~deb11u1 CVE ID: CVE-2024-26596 CVE-2024-40945 CVE-2024-42069 CVE-2024-42122 CVE-2024-45001 CVE-2024-47726 CVE-2024-49989 CVE-2024-50061 CVE-2024-54458 CVE-2024-56549 CVE-2024-57834 CVE-2024-57973 CVE-2024-57978 CVE-2024-57979 CVE-2024-57980 CVE-2024-57981 CVE-2024-57986 CVE-2024-57993 CVE-2024-57996 CVE-2024-57997 CVE-2024-57998 CVE-2024-58001 CVE-2024-58007 CVE-2024-58009 CVE-2024-58010 CVE-2024-58011 CVE-2024-58013 CVE-2024-58014 CVE-2024-58016 CVE-2024-58017 CVE-2024-58020 CVE-2024-58034 CVE-2024-58051 CVE-2024-58052 CVE-2024-58054 CVE-2024-58055 CVE-2024-58056 CVE-2024-58058 CVE-2024-58061 CVE-2024-58063 CVE-2024-58068 CVE-2024-58069 CVE-2024-58071 CVE-2024-58072 CVE-2024-58076 CVE-2024-58077 CVE-2024-58080 CVE-2024-58083 CVE-2024-58085 CVE-2024-58086 CVE-2025-21684 CVE-2025-21700 CVE-2025-21701 CVE-2025-21703 CVE-2025-21704 CVE-2025-21705 CVE-2025-21706 CVE-2025-21707 CVE-2025-21708 CVE-2025-21711 CVE-2025-21715 CVE-2025-21716 CVE-2025-21718 CVE-2025-21719 CVE-2025-21722 CVE-2025-21724 CVE-2025-21725 CVE-2025-21726 CVE-2025-21727 CVE-2025-21728 CVE-2025-21731 CVE-2025-21734 CVE-2025-21735 CVE-2025-21736 CVE-2025-21738 CVE-2025-21744 CVE-2025-21745 CVE-2025-21748 CVE-2025-21749 CVE-2025-21750 CVE-2025-21753 CVE-2025-21758 CVE-2025-21760 CVE-2025-21761 CVE-2025-21762 CVE-2025-21763 CVE-2025-21764 CVE-2025-21765 CVE-2025-21766 CVE-2025-21767 CVE-2025-21772 CVE-2025-21775 CVE-2025-21776 CVE-2025-21779 CVE-2025-21780 CVE-2025-21781 CVE-2025-21782 CVE-2025-21785 CVE-2025-21787 CVE-2025-21790 CVE-2025-21791 CVE-2025-21792 CVE-2025-21794 CVE-2025-21795 CVE-2025-21796 CVE-2025-21799 CVE-2025-21802 CVE-2025-21804 CVE-2025-21806 CVE-2025-21811 CVE-2025-21812 CVE-2025-21814 CVE-2025-21819 CVE-2025-21820 CVE-2025-21821 CVE-2025-21823 CVE-2025-21826 CVE-2025-21829 CVE-2025-21830 CVE-2025-21832 CVE-2025-21835 Debian 錯誤: 1071562 1087807 1088159 1091517 1091858 1093371 1095435 1095745 1095764 1098250 1098354 1099138

    在 Linux 核心中發現數個弱點，這些弱點可能會導致特權提升、拒絕服務或資訊洩漏。

    針對 Debian 11 bullseye，已在 6.1.129-1~deb11u1 版本中修正這些問題。此外，這也包含來自穩定版更新 6.1.129的更多錯誤修正，以及針對某些 Rockchip SoC 回歸問題所做的修復。

    建議您升級 linux-6.1 套件。

    如需有關 linux-6.1 安全性狀態的詳細資訊，請參閱其安全追蹤頁面:
    https://security-tracker.debian.org/tracker/linux-6.1

    有關 Debian LTS 安全公告、如何將這些更新套用至您的系統以及常見問題的詳細資訊，請參閱: https://wiki.debian.org/LTSAttachment:signature.ascDescription: PGP 簽章

Tenable 已直接從 Debian 安全公告擷取前置描述區塊。

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。

遠端 Azure Linux 3.0 主機上安裝的核心版本比測試版舊。因此，此版本會受到 CVE-2024-26596 公告中提及的一個弱點影響。

  - 已解決 Linux 核心中的下列弱點：net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events After the blamed commit, we started doing this dereference for every NETDEV_CHANGEUPPER and NETDEV_PRECHANGEUPPER event in the system. static inline struct dsa_port *dsa_user_to_port(const struct net_device *dev) { struct dsa_user_priv *p = netdev_priv(dev); return p->dp; } Which is obviously bogus, because not all net_devices have a netdev_priv() of type struct dsa_user_priv. But struct dsa_user_priv is fairly small, and p->dp means dereferencing 8 bytes starting with offset 16. Most drivers allocate that much private memory anyway, making our access not fault, and we discard the bogus data quickly afterwards, so this wasn't caught. But the dummy interface is somewhat special in that it calls alloc_netdev() with a priv size of 0. So every netdev_priv() dereference is invalid, and we get this when we emit a NETDEV_PRECHANGEUPPER event with a VLAN as its new upper: $ ip link add dummy1 type dummy $ ip link add link dummy1 name dummy1.100 type vlan id 100 [ 43.309174] ================================================================== [ 43.316456] BUG:
    KASAN: slab-out-of-bounds in dsa_user_prechangeupper+0x30/0xe8 [ 43.323835] Read of size 8 at addr ffff3f86481d2990 by task ip/374 [ 43.330058] [ 43.342436] Call trace: [ 43.366542] dsa_user_prechangeupper+0x30/0xe8 [ 43.371024] dsa_user_netdevice_event+0xb38/0xee8 [ 43.375768] notifier_call_chain+0xa4/0x210 [ 43.379985] raw_notifier_call_chain+0x24/0x38 [ 43.384464]
    __netdev_upper_dev_link+0x3ec/0x5d8 [ 43.389120] netdev_upper_dev_link+0x70/0xa8 [ 43.393424] register_vlan_dev+0x1bc/0x310 [ 43.397554] vlan_newlink+0x210/0x248 [ 43.401247] rtnl_newlink+0x9fc/0xe30 [ 43.404942] rtnetlink_rcv_msg+0x378/0x580 Avoid the kernel oops by dereferencing after the type check, as customary. (CVE-2024-26596)

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

ID	名稱	產品	系列	已發布	已更新	嚴重性
227475	Linux Distros 未修補弱點：CVE-2024-26596	Nessus	Misc.	2025/3/5	2025/9/5	medium
233595	Debian dla-4102: linux-config-6.1 - 安全性更新	Nessus	Debian Local Security Checks	2025/4/1	2025/4/1	high
295208	Azure Linux 3.0 安全性更新核心 (CVE-2024-26596)	Nessus	Azure Linux Local Security Checks	2026/1/22	2026/1/22	medium

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