CVE-2024-40942

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-40942
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: Fix leak of mesh_preq_queue objects The hwmp code use objects of type mesh_preq_queue, added to a list in ieee80211_if_mesh, to keep track of mpath we need to resolve. If the mpath gets deleted, ex mesh interface is removed, the entries in that list will never get cleaned. Fix this by flushing all corresponding items of the preq_queue in mesh_path_flush_pending(). This should take care of KASAN reports like this: unreferenced object 0xffff00000668d800 (size 128): comm "kworker/u8:4", pid 67, jiffies 4295419552 (age 1836.444s) hex dump (first 32 bytes): 00 1f 05 09 00 00 ff ff 00 d5 68 06 00 00 ff ff ..........h..... 8e 97 ea eb 3e b8 01 00 00 00 00 00 00 00 00 00 ....>........... backtrace: [<000000007302a0b6>] __kmem_cache_alloc_node+0x1e0/0x35c [<00000000049bd418>] kmalloc_trace+0x34/0x80 [<0000000000d792bb>] mesh_queue_preq+0x44/0x2a8 [<00000000c99c3696>] mesh_nexthop_resolve+0x198/0x19c [<00000000926bf598>] ieee80211_xmit+0x1d0/0x1f4 [<00000000fc8c2284>] __ieee80211_subif_start_xmit+0x30c/0x764 [<000000005926ee38>] ieee80211_subif_start_xmit+0x9c/0x7a4 [<000000004c86e916>] dev_hard_start_xmit+0x174/0x440 [<0000000023495647>] __dev_queue_xmit+0xe24/0x111c [<00000000cfe9ca78>] batadv_send_skb_packet+0x180/0x1e4 [<000000007bacc5d5>] batadv_v_elp_periodic_work+0x2f4/0x508 [<00000000adc3cd94>] process_one_work+0x4b8/0xa1c [<00000000b36425d1>] worker_thread+0x9c/0x634 [<0000000005852dd5>] kthread+0x1bc/0x1c4 [<000000005fccd770>] ret_from_fork+0x10/0x20 unreferenced object 0xffff000009051f00 (size 128): comm "kworker/u8:4", pid 67, jiffies 4295419553 (age 1836.440s) hex dump (first 32 bytes): 90 d6 92 0d 00 00 ff ff 00 d8 68 06 00 00 ff ff ..........h..... 36 27 92 e4 02 e0 01 00 00 58 79 06 00 00 ff ff 6'.......Xy..... backtrace: [<000000007302a0b6>] __kmem_cache_alloc_node+0x1e0/0x35c [<00000000049bd418>] kmalloc_trace+0x34/0x80 [<0000000000d792bb>] mesh_queue_preq+0x44/0x2a8 [<00000000c99c3696>] mesh_nexthop_resolve+0x198/0x19c [<00000000926bf598>] ieee80211_xmit+0x1d0/0x1f4 [<00000000fc8c2284>] __ieee80211_subif_start_xmit+0x30c/0x764 [<000000005926ee38>] ieee80211_subif_start_xmit+0x9c/0x7a4 [<000000004c86e916>] dev_hard_start_xmit+0x174/0x440 [<0000000023495647>] __dev_queue_xmit+0xe24/0x111c [<00000000cfe9ca78>] batadv_send_skb_packet+0x180/0x1e4 [<000000007bacc5d5>] batadv_v_elp_periodic_work+0x2f4/0x508 [<00000000adc3cd94>] process_one_work+0x4b8/0xa1c [<00000000b36425d1>] worker_thread+0x9c/0x634 [<0000000005852dd5>] kthread+0x1bc/0x1c4 [<000000005fccd770>] ret_from_fork+0x10/0x20

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/377dbb220edc8421b7960691876c5b3bef62f89b Patch
https://git.kernel.org/stable/c/617dadbfb2d3e152c5753e28356d189c9d6f33c0 Patch
https://git.kernel.org/stable/c/63d5f89bb5664d60edbf8cf0df911aaae8ed96a4 Patch
https://git.kernel.org/stable/c/7518e20a189f8659b8b83969db4d33a4068fcfc3 Patch
https://git.kernel.org/stable/c/b7d7f11a291830fdf69d3301075dd0fb347ced84 Patch
https://git.kernel.org/stable/c/c4c865f971fd4a255208f57ef04d814c2ae9e0dc Patch
https://git.kernel.org/stable/c/d81e244af521de63ad2883e17571b789c39b6549 Patch
https://git.kernel.org/stable/c/ec79670eae430b3ffb7e0a6417ad7657728b8f95 Patch
https://git.kernel.org/stable/c/377dbb220edc8421b7960691876c5b3bef62f89b Patch
https://git.kernel.org/stable/c/617dadbfb2d3e152c5753e28356d189c9d6f33c0 Patch
https://git.kernel.org/stable/c/63d5f89bb5664d60edbf8cf0df911aaae8ed96a4 Patch
https://git.kernel.org/stable/c/7518e20a189f8659b8b83969db4d33a4068fcfc3 Patch
https://git.kernel.org/stable/c/b7d7f11a291830fdf69d3301075dd0fb347ced84 Patch
https://git.kernel.org/stable/c/c4c865f971fd4a255208f57ef04d814c2ae9e0dc Patch
https://git.kernel.org/stable/c/d81e244af521de63ad2883e17571b789c39b6549 Patch
https://git.kernel.org/stable/c/ec79670eae430b3ffb7e0a6417ad7657728b8f95 Patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*
History

03 Nov 2025, 22:17

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html -

17 Sep 2025, 15:01

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/377dbb220edc8421b7960691876c5b3bef62f89b - () https://git.kernel.org/stable/c/377dbb220edc8421b7960691876c5b3bef62f89b - Patch
References () https://git.kernel.org/stable/c/617dadbfb2d3e152c5753e28356d189c9d6f33c0 - () https://git.kernel.org/stable/c/617dadbfb2d3e152c5753e28356d189c9d6f33c0 - Patch
References () https://git.kernel.org/stable/c/63d5f89bb5664d60edbf8cf0df911aaae8ed96a4 - () https://git.kernel.org/stable/c/63d5f89bb5664d60edbf8cf0df911aaae8ed96a4 - Patch
References () https://git.kernel.org/stable/c/7518e20a189f8659b8b83969db4d33a4068fcfc3 - () https://git.kernel.org/stable/c/7518e20a189f8659b8b83969db4d33a4068fcfc3 - Patch
References () https://git.kernel.org/stable/c/b7d7f11a291830fdf69d3301075dd0fb347ced84 - () https://git.kernel.org/stable/c/b7d7f11a291830fdf69d3301075dd0fb347ced84 - Patch
References () https://git.kernel.org/stable/c/c4c865f971fd4a255208f57ef04d814c2ae9e0dc - () https://git.kernel.org/stable/c/c4c865f971fd4a255208f57ef04d814c2ae9e0dc - Patch
References () https://git.kernel.org/stable/c/d81e244af521de63ad2883e17571b789c39b6549 - () https://git.kernel.org/stable/c/d81e244af521de63ad2883e17571b789c39b6549 - Patch
References () https://git.kernel.org/stable/c/ec79670eae430b3ffb7e0a6417ad7657728b8f95 - () https://git.kernel.org/stable/c/ec79670eae430b3ffb7e0a6417ad7657728b8f95 - Patch
CWE CWE-401
First Time Linux linux Kernel
Linux

21 Nov 2024, 09:31

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/377dbb220edc8421b7960691876c5b3bef62f89b - () https://git.kernel.org/stable/c/377dbb220edc8421b7960691876c5b3bef62f89b -
References () https://git.kernel.org/stable/c/617dadbfb2d3e152c5753e28356d189c9d6f33c0 - () https://git.kernel.org/stable/c/617dadbfb2d3e152c5753e28356d189c9d6f33c0 -
References () https://git.kernel.org/stable/c/63d5f89bb5664d60edbf8cf0df911aaae8ed96a4 - () https://git.kernel.org/stable/c/63d5f89bb5664d60edbf8cf0df911aaae8ed96a4 -
References () https://git.kernel.org/stable/c/7518e20a189f8659b8b83969db4d33a4068fcfc3 - () https://git.kernel.org/stable/c/7518e20a189f8659b8b83969db4d33a4068fcfc3 -
References () https://git.kernel.org/stable/c/b7d7f11a291830fdf69d3301075dd0fb347ced84 - () https://git.kernel.org/stable/c/b7d7f11a291830fdf69d3301075dd0fb347ced84 -
References () https://git.kernel.org/stable/c/c4c865f971fd4a255208f57ef04d814c2ae9e0dc - () https://git.kernel.org/stable/c/c4c865f971fd4a255208f57ef04d814c2ae9e0dc -
References () https://git.kernel.org/stable/c/d81e244af521de63ad2883e17571b789c39b6549 - () https://git.kernel.org/stable/c/d81e244af521de63ad2883e17571b789c39b6549 -
References () https://git.kernel.org/stable/c/ec79670eae430b3ffb7e0a6417ad7657728b8f95 - () https://git.kernel.org/stable/c/ec79670eae430b3ffb7e0a6417ad7657728b8f95 -
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: wifi: mac80211: mesh: corrige la fuga de objetos mesh_preq_queue El código hwmp usa objetos de tipo mesh_preq_queue, agregados a una lista en ieee80211_if_mesh, para realizar un seguimiento del mpath que necesitamos resolver. Si se elimina mpath, se elimina la interfaz ex mesh, las entradas en esa lista nunca se limpiarán. Solucione este problema eliminando todos los elementos correspondientes de preq_queue en mesh_path_flush_pending(). Esto debería encargarse de informes KASAN como este: objeto sin referencia 0xffff00000668d800 (tamaño 128): comm "kworker/u8:4", pid 67, jiffies 4295419552 (edad 1836.444s) volcado hexadecimal (primeros 32 bytes): 00 1f 05 09 00 00 ff ff 00 d5 68 06 00 00 ff ff ..........h..... 8e 97 ea eb 3e b8 01 00 00 00 00 00 00 00 00 00 ....&gt;.. ......... retroceso: [&lt;000000007302a0b6&gt;] __kmem_cache_alloc_node+0x1e0/0x35c [&lt;00000000049bd418&gt;] kmalloc_trace+0x34/0x80 [&lt;0000000000d792bb&gt;] 8 [&lt;00000000c99c3696&gt;] mesh_nexthop_resolve+0x198/ 0x19c [&lt;00000000926bf598&gt;] ieee80211_xmit+0x1d0/0x1f4 [&lt;00000000fc8c2284&gt;] __ieee80211_subif_start_xmit+0x30c/0x764 [&lt;000000005926ee38&gt;] 11_subif_start_xmit+0x9c/0x7a4 [&lt;000000004c86e916&gt;] dev_hard_start_xmit+0x174/0x440 [&lt;0000000023495647&gt;] __dev_queue_xmit+0xe24/ 0x111c [&lt;00000000cfe9ca78&gt;] batadv_send_skb_packet+0x180/0x1e4 [&lt;000000007bacc5d5&gt;] batadv_v_elp_periodic_work+0x2f4/0x508 [&lt;00000000adc3cd94&gt;] xa1c [&lt;00000000b36425d1&gt;] hilo_trabajador+0x9c/0x634 [&lt;0000000005852dd5&gt;] kthread+0x1bc/ 0x1c4 [&lt;000000005fccd770&gt;] ret_from_fork+0x10/0x20 objeto sin referencia 0xffff000009051f00 (tamaño 128): comm "kworker/u8:4", pid 67, jiffies 4295419553 (edad 1836.440s) volcado hexadecimal (primero 32 bytes): 90 d6 92 0d 00 00 ff ff 00 d8 68 06 00 00 ff ff ..........h..... 36 27 92 e4 02 e0 01 00 00 58 79 06 00 00 ff ff 6'.... ...Xy..... retroceso: [&lt;000000007302a0b6&gt;] __kmem_cache_alloc_node+0x1e0/0x35c [&lt;00000000049bd418&gt;] kmalloc_trace+0x34/0x80 [&lt;0000000000d792bb&gt;] 0x2a8 [&lt;00000000c99c3696&gt;] mesh_nexthop_resolve+0x198/ 0x19c [&lt;00000000926bf598&gt;] ieee80211_xmit+0x1d0/0x1f4 [&lt;00000000fc8c2284&gt;] __ieee80211_subif_start_xmit+0x30c/0x764 [&lt;000000005926ee38&gt;] 11_subif_start_xmit+0x9c/0x7a4 [&lt;000000004c86e916&gt;] dev_hard_start_xmit+0x174/0x440 [&lt;0000000023495647&gt;] __dev_queue_xmit+0xe24/ 0x111c [&lt;00000000cfe9ca78&gt;] batadv_send_skb_packet+0x180/0x1e4 [&lt;000000007bacc5d5&gt;] batadv_v_elp_periodic_work+0x2f4/0x508 [&lt;00000000adc3cd94&gt;] xa1c [&lt;00000000b36425d1&gt;] hilo_trabajador+0x9c/0x634 [&lt;0000000005852dd5&gt;] kthread+0x1bc/ 0x1c4 [&lt;000000005fccd770&gt;] ret_from_fork+0x10/0x20

12 Jul 2024, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-07-12 13:15

Updated : 2025-11-03 22:17

NVD link : CVE-2024-40942

Mitre link : CVE-2024-40942

CVE.ORG link : CVE-2024-40942

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime