GHSA-JJ67-2389-VRQJ

Vulnerability from github – Published: 2024-07-12 15:31 – Updated: 2025-11-04 00:30
VLAI?
Details

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

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-40942"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-12T13:15:16Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: Fix leak of mesh_preq_queue objects\n\nThe hwmp code use objects of type mesh_preq_queue, added to a list in\nieee80211_if_mesh, to keep track of mpath we need to resolve. If the mpath\ngets deleted, ex mesh interface is removed, the entries in that list will\nnever get cleaned. Fix this by flushing all corresponding items of the\npreq_queue in mesh_path_flush_pending().\n\nThis should take care of KASAN reports like this:\n\nunreferenced object 0xffff00000668d800 (size 128):\n  comm \"kworker/u8:4\", pid 67, jiffies 4295419552 (age 1836.444s)\n  hex dump (first 32 bytes):\n    00 1f 05 09 00 00 ff ff 00 d5 68 06 00 00 ff ff  ..........h.....\n    8e 97 ea eb 3e b8 01 00 00 00 00 00 00 00 00 00  ....\u003e...........\n  backtrace:\n    [\u003c000000007302a0b6\u003e] __kmem_cache_alloc_node+0x1e0/0x35c\n    [\u003c00000000049bd418\u003e] kmalloc_trace+0x34/0x80\n    [\u003c0000000000d792bb\u003e] mesh_queue_preq+0x44/0x2a8\n    [\u003c00000000c99c3696\u003e] mesh_nexthop_resolve+0x198/0x19c\n    [\u003c00000000926bf598\u003e] ieee80211_xmit+0x1d0/0x1f4\n    [\u003c00000000fc8c2284\u003e] __ieee80211_subif_start_xmit+0x30c/0x764\n    [\u003c000000005926ee38\u003e] ieee80211_subif_start_xmit+0x9c/0x7a4\n    [\u003c000000004c86e916\u003e] dev_hard_start_xmit+0x174/0x440\n    [\u003c0000000023495647\u003e] __dev_queue_xmit+0xe24/0x111c\n    [\u003c00000000cfe9ca78\u003e] batadv_send_skb_packet+0x180/0x1e4\n    [\u003c000000007bacc5d5\u003e] batadv_v_elp_periodic_work+0x2f4/0x508\n    [\u003c00000000adc3cd94\u003e] process_one_work+0x4b8/0xa1c\n    [\u003c00000000b36425d1\u003e] worker_thread+0x9c/0x634\n    [\u003c0000000005852dd5\u003e] kthread+0x1bc/0x1c4\n    [\u003c000000005fccd770\u003e] ret_from_fork+0x10/0x20\nunreferenced object 0xffff000009051f00 (size 128):\n  comm \"kworker/u8:4\", pid 67, jiffies 4295419553 (age 1836.440s)\n  hex dump (first 32 bytes):\n    90 d6 92 0d 00 00 ff ff 00 d8 68 06 00 00 ff ff  ..........h.....\n    36 27 92 e4 02 e0 01 00 00 58 79 06 00 00 ff ff  6\u0027.......Xy.....\n  backtrace:\n    [\u003c000000007302a0b6\u003e] __kmem_cache_alloc_node+0x1e0/0x35c\n    [\u003c00000000049bd418\u003e] kmalloc_trace+0x34/0x80\n    [\u003c0000000000d792bb\u003e] mesh_queue_preq+0x44/0x2a8\n    [\u003c00000000c99c3696\u003e] mesh_nexthop_resolve+0x198/0x19c\n    [\u003c00000000926bf598\u003e] ieee80211_xmit+0x1d0/0x1f4\n    [\u003c00000000fc8c2284\u003e] __ieee80211_subif_start_xmit+0x30c/0x764\n    [\u003c000000005926ee38\u003e] ieee80211_subif_start_xmit+0x9c/0x7a4\n    [\u003c000000004c86e916\u003e] dev_hard_start_xmit+0x174/0x440\n    [\u003c0000000023495647\u003e] __dev_queue_xmit+0xe24/0x111c\n    [\u003c00000000cfe9ca78\u003e] batadv_send_skb_packet+0x180/0x1e4\n    [\u003c000000007bacc5d5\u003e] batadv_v_elp_periodic_work+0x2f4/0x508\n    [\u003c00000000adc3cd94\u003e] process_one_work+0x4b8/0xa1c\n    [\u003c00000000b36425d1\u003e] worker_thread+0x9c/0x634\n    [\u003c0000000005852dd5\u003e] kthread+0x1bc/0x1c4\n    [\u003c000000005fccd770\u003e] ret_from_fork+0x10/0x20",
  "id": "GHSA-jj67-2389-vrqj",
  "modified": "2025-11-04T00:30:54Z",
  "published": "2024-07-12T15:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-40942"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/377dbb220edc8421b7960691876c5b3bef62f89b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/617dadbfb2d3e152c5753e28356d189c9d6f33c0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63d5f89bb5664d60edbf8cf0df911aaae8ed96a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7518e20a189f8659b8b83969db4d33a4068fcfc3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7d7f11a291830fdf69d3301075dd0fb347ced84"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4c865f971fd4a255208f57ef04d814c2ae9e0dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d81e244af521de63ad2883e17571b789c39b6549"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec79670eae430b3ffb7e0a6417ad7657728b8f95"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.