CVE-2024-35939
What it is
In the Linux kernel, the following vulnerability has been resolved: dma-direct: Leak pages on dma_set_decrypted() failure On TDX it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. DMA could free decrypted/shared pages if dma_set_decrypted() fails. This should be a rare case. Just leak the pages in this case instead of freeing them.
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 9.3 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Modified
Affected
- Linux Kernel < 6.1.86
- Linux Kernel < 6.6.27
- Linux Kernel < 6.8.6
Attack profile CVSS 3.1 · 9.3
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2024-35939.md and follow it. Check whether this project is affected by CVE-2024-35939. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/4031b72ca747a1e6e9ae4fa729e765b43363d66a
- https://git.kernel.org/stable/c/4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9
- https://git.kernel.org/stable/c/b57326c96b7bc7638aa8c44e12afa2defe0c934c
- https://git.kernel.org/stable/c/b9fa16949d18e06bdf728a560f5c8af56d2bdcaf
- https://git.kernel.org/stable/c/4031b72ca747a1e6e9ae4fa729e765b43363d66a
- https://git.kernel.org/stable/c/4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9
- https://git.kernel.org/stable/c/b57326c96b7bc7638aa8c44e12afa2defe0c934c
- https://git.kernel.org/stable/c/b9fa16949d18e06bdf728a560f5c8af56d2bdcaf
References
- https://git.kernel.org/stable/c/4031b72ca747a1e6e9ae4fa729e765b43363d66a
- https://git.kernel.org/stable/c/4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9
- https://git.kernel.org/stable/c/b57326c96b7bc7638aa8c44e12afa2defe0c934c
- https://git.kernel.org/stable/c/b9fa16949d18e06bdf728a560f5c8af56d2bdcaf
- https://git.kernel.org/stable/c/4031b72ca747a1e6e9ae4fa729e765b43363d66a
- https://git.kernel.org/stable/c/4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9
- https://git.kernel.org/stable/c/b57326c96b7bc7638aa8c44e12afa2defe0c934c
- https://git.kernel.org/stable/c/b9fa16949d18e06bdf728a560f5c8af56d2bdcaf