libbpf: Handle size overflow for ringbuf mmap
Summary
| CVE | CVE-2022-49030 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2024-10-21 20:15:13 UTC |
| Updated | 2026-08-04 10:17:32 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-190
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected bf99c936f9478a05d51e9f101f90de70bee9a89c 8a549ab6724520aa3c07f47e0eba820293551490 git | Not specified |
| CNA | Linux | Linux | affected bf99c936f9478a05d51e9f101f90de70bee9a89c 0140e079a42064680394fff1199a7b5483688dec git | Not specified |
| CNA | Linux | Linux | affected bf99c936f9478a05d51e9f101f90de70bee9a89c 535a25ab4f9a45f74ba38ab71de95e97474922ed git | Not specified |
| CNA | Linux | Linux | affected bf99c936f9478a05d51e9f101f90de70bee9a89c 927cbb478adf917e0a142b94baa37f06279cc466 git | Not specified |
| CNA | Linux | Linux | affected 5.8 | Not specified |
| CNA | Linux | Linux | unaffected 5.8 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.158 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.82 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.0.12 6.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/535a25ab4f9a45f74ba38ab71de95e97474922ed | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/0140e079a42064680394fff1199a7b5483688dec | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/927cbb478adf917e0a142b94baa37f06279cc466 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/8a549ab6724520aa3c07f47e0eba820293551490 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.