Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bfq: Make sure bfqg for which we are queueing requests is online Bios queued into BFQ IO scheduler can be associated with a cgroup that was already offlined. This may then cause insertion of this bfq_group into a service tree. But this bfq_group will get freed as soon as last bio associated with it is completed leading to use after free issues for service tree users. Fix the problem by making sure we always operate on online bfq_group. If the bfq_group associated with the bio is not online, we pick the first online parent.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.12, < 5.4.198 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/075a53b78b815301f8d3dd1ee2cd99554e34f0ddPatch
- https://git.kernel.org/stable/c/51f724bffa3403a5236597e6b75df7329c1ec6e9Patch
- https://git.kernel.org/stable/c/6ee0868b0c3ccead5907685fcdcdd0c08dfe4b0bPatch
- https://git.kernel.org/stable/c/7781c38552e6cc54ed8e9040279561340516b881Patch
- https://git.kernel.org/stable/c/97bd6c56bdcb41079e488e31df56809e3b2ce628Patch
- https://git.kernel.org/stable/c/ccddf8cd411c1800863ed357064e56ceffd356bbPatch
FAQ
What is CVE-2022-49411?
CVE-2022-49411 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: bfq: Make sure bfqg for which we are queueing requests is online Bios queued into BFQ IO scheduler can be associated with a cgroup...
How severe is CVE-2022-49411?
CVE-2022-49411 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49411?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.