Linux Distros 未修補弱點：CVE-2024-26896
medium Nessus Plugin ID 228231
語言:
概要
Linux/Unix 主機上安裝的一個或多個套件存有弱點，供應商表示將不會修補。說明
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： wifi: wfx: fix memory leak when starting AP Kmemleak reported this error: unreferenced object 0xd73d1180 (size 184): comm wpa_supplicant, pid 1559, jiffies 13006305 (age 964.245s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 1e 00 01 00 00 00 00 00 ................ backtrace: [<5ca11420>] kmem_cache_alloc+0x20c/0x5ac [<127bdd74>] __alloc_skb+0x144/0x170 [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180 [<0f9fa1d5>] __ieee80211_beacon_get+0x290/0x4d4 [mac80211] [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211] [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx] [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211] [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211] [<47bd8b68>] genl_rcv_msg+0x198/0x378 [<453ef796>] netlink_rcv_skb+0xd0/0x130 [<6b7c977a>] genl_rcv+0x34/0x44 [<66b2d04d>] netlink_unicast+0x1b4/0x258 [<f965b9b6>] netlink_sendmsg+0x1e8/0x428 [<aadb8231>] ____sys_sendmsg+0x1e0/0x274 [<d2b5212d>] ___sys_sendmsg+0x80/0xb4 [<69954f45>]
__sys_sendmsg+0x64/0xa8 unreferenced object 0xce087000 (size 1024): comm wpa_supplicant, pid 1559, jiffies 13006305 (age 964.246s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 10 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00 ...@............ backtrace: [<9a993714>]
__kmalloc_track_caller+0x230/0x600 [<f83ea192>] kmalloc_reserve.constprop.0+0x30/0x74 [<a2c61343>]
__alloc_skb+0xa0/0x170 [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180 [<0f9fa1d5>]
__ieee80211_beacon_get+0x290/0x4d4 [mac80211] [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211] [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx] [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211] [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211] [<47bd8b68>] genl_rcv_msg+0x198/0x378 [<453ef796>] netlink_rcv_skb+0xd0/0x130 [<6b7c977a>] genl_rcv+0x34/0x44 [<66b2d04d>] netlink_unicast+0x1b4/0x258 [<f965b9b6>] netlink_sendmsg+0x1e8/0x428 [<aadb8231>] ____sys_sendmsg+0x1e0/0x274 [<d2b5212d>]
___sys_sendmsg+0x80/0xb4 However, since the kernel is build optimized, it seems the stack is not accurate.
It appears the issue is related to wfx_set_mfp_ap(). The issue is obvious in this function: memory allocated by ieee80211_beacon_get() is never released. Fixing this leak makes kmemleak happy.
(CVE-2024-26896)
請注意，Nessus 依賴供應商報告的套件存在。
解決方案
目前尚未有已知的解決方案。Plugin 詳細資訊
嚴重性: Medium
ID: 228231
檔案名稱: unpatched_CVE_2024_26896.nasl
版本: 1.1
類型: local
代理程式: unix
系列: Misc.
已發布: 2025/3/5
已更新: 2025/3/5
支援的感應器: Nessus Agent, Nessus
風險資訊
VPR
風險因素: Medium
分數: 4.4
CVSS v2
風險因素: Medium
基本分數: 4.6
時間性分數: 3.4
媒介: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C
CVSS 評分資料來源: CVE-2024-26896
CVSS v3
風險因素: Medium
基本分數: 5.5
時間性分數: 4.8
媒介: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
時間媒介: CVSS:3.0/E:U/RL:O/RC:C
弱點資訊
必要的 KB 項目: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched
可輕鬆利用: No known exploits are available
弱點發布日期: 2024/4/17
參考資訊
CVE: CVE-2024-26896