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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2022-48637

bnxt: prevent skb UAF after handing over to PTP worker

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

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

  • 83bb623c968e7351aee5111547693f95f330dc5a to < 08483e4c0c83b221b8891434a04cec405dee94a6affected
  • 83bb623c968e7351aee5111547693f95f330dc5a to < 32afa1f23e42cc635ccf4c39f24514d03d1e8338affected
  • 83bb623c968e7351aee5111547693f95f330dc5a to < c31f26c8f69f776759cbbdfb38e40ea91aa0dd65affected

Linux Linux

Default version status: affected

  • 5.14affected
  • 0 to < 5.14unaffected
  • 5.15.71 to ≤ 5.15.*unaffected
  • 5.19.12 to ≤ 5.19.*unaffected
  • 6.0 to ≤ *unaffected

References