Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bf99c936f9478a05d51e9f101f90de70bee9a89c before 8a549ab6724520aa3c07f47e0eba820293551490; affected bf99c936f9478a05d51e9f101f90de70bee9a89c before 0140e079a42064680394fff1199a7b5483688dec; affected bf99c936f9478a05d51e9f101f90de70bee9a89c before 535a25ab4f9a45f74ba38ab71de95e97474922ed; affected bf99c936f9478a05d51e9f101f90de70bee9a89c before 927cbb478adf917e0a142b94baa37f06279cc466 |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 5.10.158 through 5.10.*; unaffected 5.15.82 through 5.15.*; unaffected 6.0.12 through 6.0.*; unaffected 6.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/8a549ab6724520aa3c07f47e0eba820293551490
- https://git.kernel.org/stable/c/0140e079a42064680394fff1199a7b5483688dec
- https://git.kernel.org/stable/c/535a25ab4f9a45f74ba38ab71de95e97474922ed
- https://git.kernel.org/stable/c/927cbb478adf917e0a142b94baa37f06279cc466
ADP enrichment
No English description supplied.
No references supplied.