CVE-2022-49030
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
libbpf: Handle size overflow for ringbuf mmap
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| bf99c936f9478a05d51e9f101f90de70bee9a89c | affected | git | 8a549ab6724520aa3c07f47e0eba820293551490 | Unavailable | None listed |
| bf99c936f9478a05d51e9f101f90de70bee9a89c | affected | git | 0140e079a42064680394fff1199a7b5483688dec | Unavailable | None listed |
| bf99c936f9478a05d51e9f101f90de70bee9a89c | affected | git | 535a25ab4f9a45f74ba38ab71de95e97474922ed | Unavailable | None listed |
| bf99c936f9478a05d51e9f101f90de70bee9a89c | affected | git | 927cbb478adf917e0a142b94baa37f06279cc466 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.8 | Unavailable | None listed |
| 5.10.158 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.82 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.0.12 | unaffected | semver | Unavailable | 6.0.* | None listed |
| 6.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |