ghsa-7774-rxjc-cwmm
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails
Syzkaller detected a memory leak of skbs in ath9k_hif_usb_rx_stream(). While processing skbs in ath9k_hif_usb_rx_stream(), the already allocated skbs in skb_pool are not freed if ath9k_hif_usb_rx_stream() fails. If we have an incorrect pkt_len or pkt_tag, the input skb is considered invalid and dropped. All the associated packets already in skb_pool should be dropped and freed. Added a comment describing this issue.
The patch also makes remain_skb NULL after being processed so that it cannot be referenced after potential free. The initialization of hif_dev fields which are associated with remain_skb (rx_remain_len, rx_transfer_len and rx_pad_len) is moved after a new remain_skb is allocated.
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
{
"affected": [],
"aliases": [
"CVE-2023-53199"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-15T15:15:46Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails\n\nSyzkaller detected a memory leak of skbs in ath9k_hif_usb_rx_stream().\nWhile processing skbs in ath9k_hif_usb_rx_stream(), the already allocated\nskbs in skb_pool are not freed if ath9k_hif_usb_rx_stream() fails. If we\nhave an incorrect pkt_len or pkt_tag, the input skb is considered invalid\nand dropped. All the associated packets already in skb_pool should be\ndropped and freed. Added a comment describing this issue.\n\nThe patch also makes remain_skb NULL after being processed so that it\ncannot be referenced after potential free. The initialization of hif_dev\nfields which are associated with remain_skb (rx_remain_len,\nrx_transfer_len and rx_pad_len) is moved after a new remain_skb is\nallocated.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.",
"id": "GHSA-7774-rxjc-cwmm",
"modified": "2025-09-15T15:31:28Z",
"published": "2025-09-15T15:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53199"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0af54343a76263a12dbae7fafb64eb47c4a6ad38"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3fc6401fafde11712a83089fa2cc874cfd10e2cd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/61490d2710277e8a55009b7682456ae22f8087cf"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9acdec72787af1bc8ed92711b52118c8e3e638a2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c766e37fccd5a5c5059be7efcd9618bf8a2c17c3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cd8316767099920a5d41feed1afab0c482a43e9f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f26dd69f61eff2eedf5df2d199bdd23108309947"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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