CVE-2025-21802
What it is
In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix oops when unload drivers paralleling When unload hclge driver, it tries to disable sriov first for each ae_dev node from hnae3_ae_dev_list. If user unloads hns3 driver at the time, because it removes all the ae_dev nodes, and it may cause oops. But we can't simply use hnae3_common_lock for this. Because in the process flow of pci_disable_sriov(), it will trigger the remove flow of VF, which will also take hnae3_common_lock. To fixes it, introduce a new mutex to protect the unload process.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of 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: 5.5 MEDIUM (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 < 4.20
- Linux Kernel < 5.5
- Linux Kernel < 5.10.235
- Linux Kernel < 5.15
- Linux Kernel < 5.15.179
- Linux Kernel < 6.1.129
- Linux Kernel < 6.6.76
- Linux Kernel < 6.12.13
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-2025-21802.md and follow it. Check whether this project is affected by CVE-2025-21802. 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/622d92a67656e5c4d2d6ccac02d688ed995418c6
- https://git.kernel.org/stable/c/82736bb83fb0221319c85c2e9917d0189cd84e1e
- https://git.kernel.org/stable/c/8c640dd3d900cc8988a39c007591f1deee776df4
- https://git.kernel.org/stable/c/92e5995773774a3e70257e9c95ea03518268bea5
- https://git.kernel.org/stable/c/b5a8bc47aa0a4aa8bca5466dfa2d12dbb5b3cd0c
- https://git.kernel.org/stable/c/cafe9a27e22736d4a01b3933e36225f9857c7988
- https://git.kernel.org/stable/c/e876522659012ef2e73834a0b9f1cbe3f74d5fad
References
- https://git.kernel.org/stable/c/622d92a67656e5c4d2d6ccac02d688ed995418c6
- https://git.kernel.org/stable/c/82736bb83fb0221319c85c2e9917d0189cd84e1e
- https://git.kernel.org/stable/c/8c640dd3d900cc8988a39c007591f1deee776df4
- https://git.kernel.org/stable/c/92e5995773774a3e70257e9c95ea03518268bea5
- https://git.kernel.org/stable/c/b5a8bc47aa0a4aa8bca5466dfa2d12dbb5b3cd0c
- https://git.kernel.org/stable/c/cafe9a27e22736d4a01b3933e36225f9857c7988
- https://git.kernel.org/stable/c/e876522659012ef2e73834a0b9f1cbe3f74d5fad
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html