CVE-2022-49935
Last modified
CVE-2022-49935 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: dma-buf/dma-resv: check if the new fence is really later Previously when we added a fence to a dma_resv object we always assumed the the newer than all the existing fences. With Jason's work to add an UAPI to explicit export/import that's not necessary the case any more. So without this check we would allow userspace to force the kernel into an use after free error. Since the change is very small and defensive it's probably a good idea to backport this to stable kernels as well just in case others are using the dma_resv object in the same way.. EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: dma-buf/dma-resv: check if the new fence is really later Previously when we added a fence to a dma_resv object we always assumed the the newer than all the existing fences. With Jason's work to add an UAPI to explicit export/import that's not necessary the case any more. So without this check we would allow userspace to force the kernel into an use after free error. Since the change is very small and defensive it's probably a good idea to backport this to stable kernels as well just in case others are using the dma_resv object in the same way.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 5.0, < 5.19.8 | — |
| Linux | Linux Kernel | 6.0 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-49935?
How severe is CVE-2022-49935?
How do I fix CVE-2022-49935?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2022
- CVE-2022-49929In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49930In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49931In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49932In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49933Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2022-49934In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2022-49936In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49937In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49938In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49939In the Linux kernel, the following vulnerability has been re…7
- CVE-2022-4994In the Linux kernel, the following vulnerability has been re…
- CVE-2022-49940In the Linux kernel, the following vulnerability has been re…5.5
Are you affected by CVE-2022-49935?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST