FKIE_CVE-2022-50829

Vulnerability from fkie_nvd - Published: 2025-12-30 13:15 - Updated: 2025-12-30 13:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb() It is possible that skb is freed in ath9k_htc_rx_msg(), then usb_submit_urb() fails and we try to free skb again. It causes use-after-free bug. Moreover, if alloc_skb() fails, urb->context becomes NULL but rx_buf is not freed and there can be a memory leak. The patch removes unnecessary nskb and makes skb processing more clear: it is supposed that ath9k_htc_rx_msg() either frees old skb or passes its managing to another callback function. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c8dd2ea4b419da96ab4953e4967e9363e2f8a4f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/355f16f756aad0c95cdaa0c14a34ab4137d32815
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/53b9bb1a00c4285ee7f58a11129dbea015db61bc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5e8751a977a49a6e00cce1a8da5ca16da83f9c8c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71fc0ad671a62c494d2aec731baeabd3bfe6c95d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/988bd27de2484faf17afe0408db2e3d9e5ac61fc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/98d9172822dc6f38138333941984bd759a89d419
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd95f2239fc846795fc926787c3ae0ca701c9840
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f127c2b4c967025e5c3a4ce7e13b79135d46a33d
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb()\n\nIt is possible that skb is freed in ath9k_htc_rx_msg(), then\nusb_submit_urb() fails and we try to free skb again. It causes\nuse-after-free bug. Moreover, if alloc_skb() fails, urb-\u003econtext becomes\nNULL but rx_buf is not freed and there can be a memory leak.\n\nThe patch removes unnecessary nskb and makes skb processing more clear: it\nis supposed that ath9k_htc_rx_msg() either frees old skb or passes its\nmanaging to another callback function.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
    }
  ],
  "id": "CVE-2022-50829",
  "lastModified": "2025-12-30T13:15:57.377",
  "metrics": {},
  "published": "2025-12-30T13:15:57.377",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0c8dd2ea4b419da96ab4953e4967e9363e2f8a4f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/355f16f756aad0c95cdaa0c14a34ab4137d32815"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/53b9bb1a00c4285ee7f58a11129dbea015db61bc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5e8751a977a49a6e00cce1a8da5ca16da83f9c8c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/71fc0ad671a62c494d2aec731baeabd3bfe6c95d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/988bd27de2484faf17afe0408db2e3d9e5ac61fc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/98d9172822dc6f38138333941984bd759a89d419"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dd95f2239fc846795fc926787c3ae0ca701c9840"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f127c2b4c967025e5c3a4ce7e13b79135d46a33d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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.