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CVE PROGRAM SOURCE RECORDUnscored

CVE-2024-40942

wifi: mac80211: mesh: Fix leak of mesh_preq_queue objects

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e to < 377dbb220edc8421b7960691876c5b3bef62f89baffected
  • 050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e to < ec79670eae430b3ffb7e0a6417ad7657728b8f95affected
  • 050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e to < 7518e20a189f8659b8b83969db4d33a4068fcfc3affected
  • 050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e to < c4c865f971fd4a255208f57ef04d814c2ae9e0dcaffected
  • 050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e to < 617dadbfb2d3e152c5753e28356d189c9d6f33c0affected
  • 050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e to < 63d5f89bb5664d60edbf8cf0df911aaae8ed96a4affected
  • 050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e to < d81e244af521de63ad2883e17571b789c39b6549affected
  • 050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e to < b7d7f11a291830fdf69d3301075dd0fb347ced84affected

Linux Linux

Default version status: affected

  • 2.6.26affected
  • 0 to < 2.6.26unaffected
  • 4.19.317 to ≤ 4.19.*unaffected
  • 5.4.279 to ≤ 5.4.*unaffected
  • 5.10.221 to ≤ 5.10.*unaffected
  • 5.15.162 to ≤ 5.15.*unaffected
  • 6.1.95 to ≤ 6.1.*unaffected
  • 6.6.35 to ≤ 6.6.*unaffected
  • 6.9.6 to ≤ 6.9.*unaffected
  • 6.10 to ≤ *unaffected

References