CVE-2024-42131
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-42131
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-42131.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-42131
- Downstream
- Related
- Published
- 2024-07-30T07:46:26.872Z
- Modified
- 2025-11-28T02:35:48.594823Z
- Summary
- mm: avoid overflows in dirty throttling logic
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm: avoid overflows in dirty throttling logic
The dirty throttling logic is interspersed with assumptions that dirty limits in PAGESIZE units fit into 32-bit (so that various multiplications fit into 64-bits). If limits end up being larger, we will hit overflows, possible divisions by 0 etc. Fix these problems by never allowing so large dirty limits as they have dubious practical value anyway. For dirtybytes / dirtybackgroundbytes interfaces we can just refuse to set so large limits. For dirtyratio / dirtybackgroundratio it isn't so simple as the dirty limit is computed from the amount of available memory which can change due to memory hotplug etc. So when converting dirty limits from ratios to numbers of pages, we just don't allow the result to exceed UINTMAX.
This is root-only triggerable problem which occurs when the operator sets dirty limits to >16 TB.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42131.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/2b2d2b8766db028bd827af34075f221ae9e9efff
- https://git.kernel.org/stable/c/385d838df280eba6c8680f9777bfa0d0bfe7e8b2
- https://git.kernel.org/stable/c/4d3817b64eda07491bdd86a234629fe0764fb42a
- https://git.kernel.org/stable/c/7a49389771ae7666f4dc3426e2a4594bf23ae290
- https://git.kernel.org/stable/c/8e0b5e7f2895eccef5c2a0018b589266f90c4805
- https://git.kernel.org/stable/c/a25e8536184516b55ef89ab91dd2eea429de28d2
- https://git.kernel.org/stable/c/bd16a7ee339aef3ee4c90cb23902afb6af379ea0
- https://git.kernel.org/stable/c/c83ed422c24f0d4b264f89291d4fabe285f80dbc
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42131.json
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://nvd.nist.gov/vuln/detail/CVE-2024-42131
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed2b2d2b8766db028bd827af34075f221ae9e9efffFixed4d3817b64eda07491bdd86a234629fe0764fb42aFixed7a49389771ae7666f4dc3426e2a4594bf23ae290Fixeda25e8536184516b55ef89ab91dd2eea429de28d2Fixedc83ed422c24f0d4b264f89291d4fabe285f80dbcFixedbd16a7ee339aef3ee4c90cb23902afb6af379ea0Fixed8e0b5e7f2895eccef5c2a0018b589266f90c4805Fixed385d838df280eba6c8680f9777bfa0d0bfe7e8b2
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed4.19.320
- Type
- ECOSYSTEM
- Events
-
Introduced4.20.0Fixed5.4.282
- Type
- ECOSYSTEM
- Events
-
Introduced5.5.0Fixed5.10.222
- Type
- ECOSYSTEM
- Events
-
Introduced5.11.0Fixed5.15.163
- Type
- ECOSYSTEM
- Events
-
Introduced5.16.0Fixed6.1.98
- Type
- ECOSYSTEM
- Events
-
Introduced6.2.0Fixed6.6.39
- Type
- ECOSYSTEM
- Events
-
Introduced6.7.0Fixed6.9.9