vulnerability
Debian: CVE-2021-47235: linux -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | 2024-05-21 | 2024-07-30 | 2025-01-28 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
2024-05-21
Added
2024-07-30
Modified
2025-01-28
Description
In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: fix potential use-after-free in ec_bhf_remove
static void ec_bhf_remove(struct pci_dev *dev)
{
...
struct ec_bhf_priv *priv = netdev_priv(net_dev);
unregister_netdev(net_dev);
free_netdev(net_dev);
pci_iounmap(dev, priv->dma_io);
pci_iounmap(dev, priv->io);
...
}
priv is netdev private data, but it is used
after free_netdev(). It can cause use-after-free when accessing priv
pointer. So, fix it by moving free_netdev() after pci_iounmap()
calls.
Solution
debian-upgrade-linux
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