CVE-2025-40293
- Source
- https://cve.org/CVERecord?id=CVE-2025-40293
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40293.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-40293
- Downstream
- Related
- Published
- 2025-12-08T00:46:16.850Z
- Modified
- 2026-03-20T12:43:15.463530Z
- Summary
- iommufd: Don't overflow during division for dirty tracking
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
iommufd: Don't overflow during division for dirty tracking
If pgshift is 63 then BITSPERTYPE(*bitmap->bitmap) * pgsize will overflow to 0 and this triggers divide by 0.
In this case the index should just be 0, so reorganize things to divide by shift and avoid hitting any overflows.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40293.json" }- References
-
- https://git.kernel.org/stable/c/07105e61882ff4a7d58db63cc5f9e90c6c60506c
- https://git.kernel.org/stable/c/4c8a4f1d34eced168cc0b3a3dfe7b6dcc2090f69
- https://git.kernel.org/stable/c/cb30dfa75d55eced379a42fd67bd5fb7ec38555e
- https://git.kernel.org/stable/c/dbf316fc90aa954dcd5440817f4b944627ed63e0
- https://git.kernel.org/stable/c/de7f2c67ceb1941b05b04ac35458a03e93cc57b1
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40293.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-40293
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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
-
Introduced58ccf0190d19d9a8a41f8a02b9e06742b58df4a1Fixed07105e61882ff4a7d58db63cc5f9e90c6c60506cFixed4c8a4f1d34eced168cc0b3a3dfe7b6dcc2090f69Fixedde7f2c67ceb1941b05b04ac35458a03e93cc57b1Fixeddbf316fc90aa954dcd5440817f4b944627ed63e0Fixedcb30dfa75d55eced379a42fd67bd5fb7ec38555e