CVE-2021-47301
High
Description
In the Linux kernel, the following vulnerability has been resolved: igb: Fix use-after-free error during reset Cleans the next descriptor to watch (next_to_watch) when cleaning the TX ring. Failure to do so can cause invalid memory accesses. If igb_poll() runs while the controller is reset this can lead to the driver try to free a skb that was already freed. (The crash is harder to reproduce with the igb driver, but the same potential problem exists as the code is identical to igc)
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedMay 21, 2024
First seenMay 21, 2024
How to fix
Update
- linux linux_kernel4.14.241, 4.19.199, 5.4.136, 5.10.54, 5.13.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.12 ≤ v < 4.14.241, 4.15 ≤ v < 4.19.199, 4.20 ≤ v < 5.4.136, 5.5 ≤ v < 5.10.54, 5.11 ≤ v < 5.13.6, 5.14 | 4.14.241, 4.19.199, 5.4.136, 5.10.54, 5.13.6 |
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