CVE-2023-46838
High
Description
Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Linux Kernel
PublishedJan 29, 2024
First seenJan 29, 2024
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.14 ≤ v < 4.19.306, 4.20 ≤ v < 5.4.268, 5.5 ≤ v < 5.10.209, 5.11 ≤ v < 5.15.148, 5.16 ≤ v < 6.1.75, 6.2 ≤ v < 6.6.14, 6.7 ≤ v < 6.7.2 | 4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2 |
| fedoraproject fedora | 38, 39 | — |
| debian debian_linux | 10.0 | — |
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