CVE-2024-26896

{"id": "CVE-2024-26896", "cveTags": [], "metrics": {}, "published": "2024-04-17T11:15:10.727", "references": [{"url": "https://git.kernel.org/stable/c/12f00a367b2b62756e0396f14b54c2c15524e1c3", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3a71ec74e5e3478d202a1874f085ca3ef40be49b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a1f57a0127b89a6b6620514564aa7eaec16d9af3", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b8cfb7c819dd39965136a66fe3a7fde688d976fc", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dadbb5d29d6c5f571a50272fce8c1505a9559487", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wfx: fix memory leak when starting AP\n\nKmemleak reported this error:\n\n unreferenced object 0xd73d1180 (size 184):\n comm \"wpa_supplicant\", pid 1559, jiffies 13006305 (age 964.245s)\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 1e 00 01 00 00 00 00 00 ................\n backtrace:\n [<5ca11420>] kmem_cache_alloc+0x20c/0x5ac\n [<127bdd74>] __alloc_skb+0x144/0x170\n [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180\n [<0f9fa1d5>] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\n [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\n [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx]\n [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211]\n [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\n [<47bd8b68>] genl_rcv_msg+0x198/0x378\n [<453ef796>] netlink_rcv_skb+0xd0/0x130\n [<6b7c977a>] genl_rcv+0x34/0x44\n [<66b2d04d>] netlink_unicast+0x1b4/0x258\n [<f965b9b6>] netlink_sendmsg+0x1e8/0x428\n [<aadb8231>] ____sys_sendmsg+0x1e0/0x274\n [<d2b5212d>] ___sys_sendmsg+0x80/0xb4\n [<69954f45>] __sys_sendmsg+0x64/0xa8\n unreferenced object 0xce087000 (size 1024):\n comm \"wpa_supplicant\", pid 1559, jiffies 13006305 (age 964.246s)\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 10 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00 ...@............\n backtrace:\n [<9a993714>] __kmalloc_track_caller+0x230/0x600\n [<f83ea192>] kmalloc_reserve.constprop.0+0x30/0x74\n [<a2c61343>] __alloc_skb+0xa0/0x170\n [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180\n [<0f9fa1d5>] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\n [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\n [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx]\n [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211]\n [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\n [<47bd8b68>] genl_rcv_msg+0x198/0x378\n [<453ef796>] netlink_rcv_skb+0xd0/0x130\n [<6b7c977a>] genl_rcv+0x34/0x44\n [<66b2d04d>] netlink_unicast+0x1b4/0x258\n [<f965b9b6>] netlink_sendmsg+0x1e8/0x428\n [<aadb8231>] ____sys_sendmsg+0x1e0/0x274\n [<d2b5212d>] ___sys_sendmsg+0x80/0xb4\n\nHowever, since the kernel is build optimized, it seems the stack is not\naccurate. It appears the issue is related to wfx_set_mfp_ap(). The issue\nis obvious in this function: memory allocated by ieee80211_beacon_get()\nis never released. Fixing this leak makes kmemleak happy."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: wifi: wfx: corrige la p\u00e9rdida de memoria al iniciar AP Kmemleak inform\u00f3 este error: objeto sin referencia 0xd73d1180 (tama\u00f1o 184): comm \"wpa_supplicant\", pid 1559, jiffies 13006305 (edad 964.245 s) volcado hexadecimal (primeros 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 ................ rastreo inverso: [&lt;5ca11420&gt;] kmem_cache_alloc+0x20c/0x5ac [&lt;127bdd74&gt;] __alloc_skb+0x144/0x170 [] __netdev_alloc_skb +0x50/0x180 [&lt;0f9fa1d5&gt;] __ieee80211_beacon_get+0x290/0x4d4 [mac80211] [&lt;7accd02d&gt;] ieee80211_beacon_get_tim+0x54/0x18c [mac80211] [&lt;41e25cc3&gt;] 8/0x234 [wfx] [&lt;93a70356&gt;] ieee80211_start_ap+ 0x404/0x6b4 [mac80211] [] nl80211_start_ap+0x76c/0x9e0 [cfg80211] [&lt;47bd8b68&gt;] genl_rcv_msg+0x198/0x378 [&lt;453ef796&gt;] 130 [&lt;6b7c977a&gt;] genl_rcv+0x34/0x44 [ &lt;66b2d04d&gt;] netlink_unicast+0x1b4/0x258 [] netlink_sendmsg+0x1e8/0x428 [] ____sys_sendmsg+0x1e0/0x274 [] b4 [&lt;69954f45&gt;] __sys_sendmsg+0x64/0xa8 sin referencia Objeto 0xCE087000 (tama\u00f1o 1024): Comm \"WPA_Supplicant\", PID 1559, Jiffies 13006305 (Edad 964.246s) Volcado hexagonal (Primero 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 ...@............ retroceso: [&lt;9a993714&gt; ] __kmalloc_track_caller+0x230/0x600 [] kmalloc_reserve.constprop.0+0x30/0x74 [] __alloc_skb+0xa0/0x170 [] __netdev_alloc_skb+0x50/0x180 9fa1d5&gt;] __ieee80211_beacon_get+0x290/0x4d4 [mac80211] [&lt;7accd02d&gt;] ieee80211_beacon_get_tim+0x54/0x18c [mac80211] [&lt;41e25cc3&gt;] wfx_start_ap+0xc8/0x234 [wfx] [&lt;93a70356&gt;] ieee80211_start_ap+0x404/0x6b4 [ mac80211] [] nl80211_start_ap+0x76c /0x9e0 [cfg80211] [&lt;47bd8b68&gt;] genl_rcv_msg+0x198/0x378 [&lt;453ef796&gt;] netlink_rcv_skb+0xd0/0x130 [&lt;6b7c977a&gt;] genl_rcv+0x34/0x44 [&lt;66b2d04d&gt;] x1b4/0x258 [] netlink_sendmsg+0x1e8/0x428 [] ____sys_sendmsg+0x1e0/0x274 [] ___sys_sendmsg+0x80/0xb4 Sin embargo, dado que el kernel est\u00e1 optimizado, parece que la pila no es precisa. Parece que el problema est\u00e1 relacionado con wfx_set_mfp_ap(). El problema es obvio en esta funci\u00f3n: la memoria asignada por ieee80211_beacon_get() nunca se libera. Arreglar esta fuga hace feliz a kmemleak."}], "lastModified": "2024-07-03T01:49:59.133", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}