gsd-2022-48637
Vulnerability from gsd
Modified
2024-02-26 06:00
Details
In the Linux kernel, the following vulnerability has been resolved:
bnxt: prevent skb UAF after handing over to PTP worker
When reading the timestamp is required bnxt_tx_int() hands
over the ownership of the completed skb to the PTP worker.
The skb should not be used afterwards, as the worker may
run before the rest of our code and free the skb, leading
to a use-after-free.
Since dev_kfree_skb_any() accepts NULL make the loss of
ownership more obvious and set skb to NULL.
Aliases
{
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
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"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt: prevent skb UAF after handing over to PTP worker\n\nWhen reading the timestamp is required bnxt_tx_int() hands\nover the ownership of the completed skb to the PTP worker.\nThe skb should not be used afterwards, as the worker may\nrun before the rest of our code and free the skb, leading\nto a use-after-free.\n\nSince dev_kfree_skb_any() accepts NULL make the loss of\nownership more obvious and set skb to NULL.",
"id": "GSD-2022-48637",
"modified": "2024-02-26T06:00:31.472490Z",
"schema_version": "1.4.0"
}
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt: prevent skb UAF after handing over to PTP worker\n\nWhen reading the timestamp is required bnxt_tx_int() hands\nover the ownership of the completed skb to the PTP worker.\nThe skb should not be used afterwards, as the worker may\nrun before the rest of our code and free the skb, leading\nto a use-after-free.\n\nSince dev_kfree_skb_any() accepts NULL make the loss of\nownership more obvious and set skb to NULL."
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"id": "CVE-2022-48637",
"lastModified": "2024-04-28T13:15:06.763",
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"published": "2024-04-28T13:15:06.763",
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"vulnStatus": "Received"
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}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.