In the Linux kernel, the following vulnerability has been resolved:
net: ll_temac: Make sure to free skb when it is completely used
With the skb pointer piggy-backed on the TX BD, we have a simple and efficient way to free the skb buffer when the frame has been transmitted. But in order to avoid freeing the skb while there are still fragments from the skb in use, we need to piggy-back on the TX BD of the skb, not the first.
Without this, we are doing use-after-free on the DMA side, when the first BD of a multi TX BD packet is seen as completed in xmit_done, and the remaining BDs are still being processed.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 21, 2024 |
| Ubuntu | — | Upgrade linux-raspi-5.4Upgrade linux-gcp-fipsUpgrade linux-bluefieldUpgrade linux-azure-5.4Upgrade linux-azureUpgrade linuxUpgrade linux-awsUpgrade linux-gcpUpgrade linux-gkeopUpgrade linux-hwe-5.4Upgrade linux-aws-5.4Upgrade linux-oracleUpgrade linux-azure-fde-5.15Upgrade linux-gcp-5.4Upgrade linux-oracle-5.4Upgrade linux-kvmUpgrade linux-fipsUpgrade linux-raspiUpgrade linux-aws-fipsUpgrade linux-azure-fips | Nov 19, 2024 | May 21, 2024 |
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