CVE-2022-49030
High
Description
In the Linux kernel, the following vulnerability has been resolved: libbpf: Handle size overflow for ringbuf mmap The maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries will overflow u32 when mapping producer page and data pages. Only casting max_entries to size_t is not enough, because for 32-bits application on 64-bits kernel the size of read-only mmap region also could overflow size_t. So fixing it by casting the size of read-only mmap region into a __u64 and checking whether or not there will be overflow during mmap.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedOct 21, 2024
First seenOct 21, 2024
How to fix
Update
- linux linux_kernel5.10.158, 5.15.82, 6.0.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.8 ≤ v < 5.10.158, 5.11 ≤ v < 5.15.82, 5.16 ≤ v < 6.0.12, 6.1 | 5.10.158, 5.15.82, 6.0.12 |
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