CVE-2024-26896
Vulnerability from cvelistv5
Published
2024-04-17 10:27
Modified
2024-12-19 08:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: 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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12f00a367b2b62756e0396f14b54c2c15524e1c3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a71ec74e5e3478d202a1874f085ca3ef40be49b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a1f57a0127b89a6b6620514564aa7eaec16d9af3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b8cfb7c819dd39965136a66fe3a7fde688d976fc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dadbb5d29d6c5f571a50272fce8c1505a9559487
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/12f00a367b2b62756e0396f14b54c2c15524e1c3
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3a71ec74e5e3478d202a1874f085ca3ef40be49b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a1f57a0127b89a6b6620514564aa7eaec16d9af3
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b8cfb7c819dd39965136a66fe3a7fde688d976fc
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dadbb5d29d6c5f571a50272fce8c1505a9559487
Impacted products
Vendor Product Version
Linux Linux Version: 5.10
Show details on NVD website

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{
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    "cna": {
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          "product": "Linux",
          "programFiles": [
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      "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        [\u003c5ca11420\u003e] kmem_cache_alloc+0x20c/0x5ac\n        [\u003c127bdd74\u003e] __alloc_skb+0x144/0x170\n        [\u003cfb8a5e38\u003e] __netdev_alloc_skb+0x50/0x180\n        [\u003c0f9fa1d5\u003e] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\n        [\u003c7accd02d\u003e] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\n        [\u003c41e25cc3\u003e] wfx_start_ap+0xc8/0x234 [wfx]\n        [\u003c93a70356\u003e] ieee80211_start_ap+0x404/0x6b4 [mac80211]\n        [\u003ca4a661cd\u003e] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\n        [\u003c47bd8b68\u003e] genl_rcv_msg+0x198/0x378\n        [\u003c453ef796\u003e] netlink_rcv_skb+0xd0/0x130\n        [\u003c6b7c977a\u003e] genl_rcv+0x34/0x44\n        [\u003c66b2d04d\u003e] netlink_unicast+0x1b4/0x258\n        [\u003cf965b9b6\u003e] netlink_sendmsg+0x1e8/0x428\n        [\u003caadb8231\u003e] ____sys_sendmsg+0x1e0/0x274\n        [\u003cd2b5212d\u003e] ___sys_sendmsg+0x80/0xb4\n        [\u003c69954f45\u003e] __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        [\u003c9a993714\u003e] __kmalloc_track_caller+0x230/0x600\n        [\u003cf83ea192\u003e] kmalloc_reserve.constprop.0+0x30/0x74\n        [\u003ca2c61343\u003e] __alloc_skb+0xa0/0x170\n        [\u003cfb8a5e38\u003e] __netdev_alloc_skb+0x50/0x180\n        [\u003c0f9fa1d5\u003e] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\n        [\u003c7accd02d\u003e] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\n        [\u003c41e25cc3\u003e] wfx_start_ap+0xc8/0x234 [wfx]\n        [\u003c93a70356\u003e] ieee80211_start_ap+0x404/0x6b4 [mac80211]\n        [\u003ca4a661cd\u003e] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\n        [\u003c47bd8b68\u003e] genl_rcv_msg+0x198/0x378\n        [\u003c453ef796\u003e] netlink_rcv_skb+0xd0/0x130\n        [\u003c6b7c977a\u003e] genl_rcv+0x34/0x44\n        [\u003c66b2d04d\u003e] netlink_unicast+0x1b4/0x258\n        [\u003cf965b9b6\u003e] netlink_sendmsg+0x1e8/0x428\n        [\u003caadb8231\u003e] ____sys_sendmsg+0x1e0/0x274\n        [\u003cd2b5212d\u003e] ___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."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "wifi: wfx: fix memory leak when starting AP",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26896",
    "datePublished": "2024-04-17T10:27:47.214Z",
    "dateReserved": "2024-02-19T14:20:24.186Z",
    "dateUpdated": "2024-12-19T08:49:42.985Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26896\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-17T11:15:10.727\",\"lastModified\":\"2024-11-21T09:03:19.633\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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        [\u003c5ca11420\u003e] kmem_cache_alloc+0x20c/0x5ac\\n        [\u003c127bdd74\u003e] __alloc_skb+0x144/0x170\\n        [\u003cfb8a5e38\u003e] __netdev_alloc_skb+0x50/0x180\\n        [\u003c0f9fa1d5\u003e] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\\n        [\u003c7accd02d\u003e] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\\n        [\u003c41e25cc3\u003e] wfx_start_ap+0xc8/0x234 [wfx]\\n        [\u003c93a70356\u003e] ieee80211_start_ap+0x404/0x6b4 [mac80211]\\n        [\u003ca4a661cd\u003e] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\\n        [\u003c47bd8b68\u003e] genl_rcv_msg+0x198/0x378\\n        [\u003c453ef796\u003e] netlink_rcv_skb+0xd0/0x130\\n        [\u003c6b7c977a\u003e] genl_rcv+0x34/0x44\\n        [\u003c66b2d04d\u003e] netlink_unicast+0x1b4/0x258\\n        [\u003cf965b9b6\u003e] netlink_sendmsg+0x1e8/0x428\\n        [\u003caadb8231\u003e] ____sys_sendmsg+0x1e0/0x274\\n        [\u003cd2b5212d\u003e] ___sys_sendmsg+0x80/0xb4\\n        [\u003c69954f45\u003e] __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        [\u003c9a993714\u003e] __kmalloc_track_caller+0x230/0x600\\n        [\u003cf83ea192\u003e] kmalloc_reserve.constprop.0+0x30/0x74\\n        [\u003ca2c61343\u003e] __alloc_skb+0xa0/0x170\\n        [\u003cfb8a5e38\u003e] __netdev_alloc_skb+0x50/0x180\\n        [\u003c0f9fa1d5\u003e] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\\n        [\u003c7accd02d\u003e] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\\n        [\u003c41e25cc3\u003e] wfx_start_ap+0xc8/0x234 [wfx]\\n        [\u003c93a70356\u003e] ieee80211_start_ap+0x404/0x6b4 [mac80211]\\n        [\u003ca4a661cd\u003e] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\\n        [\u003c47bd8b68\u003e] genl_rcv_msg+0x198/0x378\\n        [\u003c453ef796\u003e] netlink_rcv_skb+0xd0/0x130\\n        [\u003c6b7c977a\u003e] genl_rcv+0x34/0x44\\n        [\u003c66b2d04d\u003e] netlink_unicast+0x1b4/0x258\\n        [\u003cf965b9b6\u003e] netlink_sendmsg+0x1e8/0x428\\n        [\u003caadb8231\u003e] ____sys_sendmsg+0x1e0/0x274\\n        [\u003cd2b5212d\u003e] ___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: [\u0026lt;5ca11420\u0026gt;] kmem_cache_alloc+0x20c/0x5ac [\u0026lt;127bdd74\u0026gt;] __alloc_skb+0x144/0x170 [] __netdev_alloc_skb +0x50/0x180 [\u0026lt;0f9fa1d5\u0026gt;] __ieee80211_beacon_get+0x290/0x4d4 [mac80211] [\u0026lt;7accd02d\u0026gt;] ieee80211_beacon_get_tim+0x54/0x18c [mac80211] [\u0026lt;41e25cc3\u0026gt;] 8/0x234 [wfx] [\u0026lt;93a70356\u0026gt;] ieee80211_start_ap+ 0x404/0x6b4 [mac80211] [] nl80211_start_ap+0x76c/0x9e0 [cfg80211] [\u0026lt;47bd8b68\u0026gt;] genl_rcv_msg+0x198/0x378 [\u0026lt;453ef796\u0026gt;] 130 [\u0026lt;6b7c977a\u0026gt;] genl_rcv+0x34/0x44 [ \u0026lt;66b2d04d\u0026gt;] netlink_unicast+0x1b4/0x258 [] netlink_sendmsg+0x1e8/0x428 [] ____sys_sendmsg+0x1e0/0x274 [] b4 [\u0026lt;69954f45\u0026gt;] __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: [\u0026lt;9a993714\u0026gt; ] __kmalloc_track_caller+0x230/0x600 [] kmalloc_reserve.constprop.0+0x30/0x74 [] __alloc_skb+0xa0/0x170 [] __netdev_alloc_skb+0x50/0x180 9fa1d5\u0026gt;] __ieee80211_beacon_get+0x290/0x4d4 [mac80211] [\u0026lt;7accd02d\u0026gt;] ieee80211_beacon_get_tim+0x54/0x18c [mac80211] [\u0026lt;41e25cc3\u0026gt;] wfx_start_ap+0xc8/0x234 [wfx] [\u0026lt;93a70356\u0026gt;] ieee80211_start_ap+0x404/0x6b4 [ mac80211] [] nl80211_start_ap+0x76c /0x9e0 [cfg80211] [\u0026lt;47bd8b68\u0026gt;] genl_rcv_msg+0x198/0x378 [\u0026lt;453ef796\u0026gt;] netlink_rcv_skb+0xd0/0x130 [\u0026lt;6b7c977a\u0026gt;] genl_rcv+0x34/0x44 [\u0026lt;66b2d04d\u0026gt;] 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.\"}],\"metrics\":{},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"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\"},{\"url\":\"https://git.kernel.org/stable/c/12f00a367b2b62756e0396f14b54c2c15524e1c3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/3a71ec74e5e3478d202a1874f085ca3ef40be49b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/a1f57a0127b89a6b6620514564aa7eaec16d9af3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/b8cfb7c819dd39965136a66fe3a7fde688d976fc\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/dadbb5d29d6c5f571a50272fce8c1505a9559487\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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