CVE-2022-50244
What it is
In the Linux kernel, the following vulnerability has been resolved: cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter() If device_register() fails in cxl_pci_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails.
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
- Weakness
- CWE-476 · NULL pointer dereference
- Record status
- Analyzed
Affected
- Linux Kernel < 4.9.337
- Linux Kernel < 4.14.303
- Linux Kernel < 4.19.270
- Linux Kernel < 5.4.229
- Linux Kernel < 5.10.163
- Linux Kernel < 5.15.86
- Linux Kernel < 6.0.16
- Linux Kernel < 6.1.2
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-2022-50244.md and follow it. Check whether this project is affected by CVE-2022-50244. 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/02cd3032b154fa02fdf90e7467abaeed889330b2
- https://git.kernel.org/stable/c/0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec
- https://git.kernel.org/stable/c/139abd4c626a6f7ce02789ed5f73aa2256e0542b
- https://git.kernel.org/stable/c/22511eefa61db26e12c97dd7ada3071dbdfcb004
- https://git.kernel.org/stable/c/2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339
- https://git.kernel.org/stable/c/361412dae1690d4b5df6f92fc943cdc773c95cbc
- https://git.kernel.org/stable/c/82e5481428faf11c79b9c094dd24a1849bbf64ac
- https://git.kernel.org/stable/c/82e68432668ae75b4c814d160f6987ecb0681273
- https://git.kernel.org/stable/c/c4b2e35df919d99bbbed033c2fa0b607f9f463b5
References
- https://git.kernel.org/stable/c/02cd3032b154fa02fdf90e7467abaeed889330b2
- https://git.kernel.org/stable/c/0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec
- https://git.kernel.org/stable/c/139abd4c626a6f7ce02789ed5f73aa2256e0542b
- https://git.kernel.org/stable/c/22511eefa61db26e12c97dd7ada3071dbdfcb004
- https://git.kernel.org/stable/c/2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339
- https://git.kernel.org/stable/c/361412dae1690d4b5df6f92fc943cdc773c95cbc
- https://git.kernel.org/stable/c/82e5481428faf11c79b9c094dd24a1849bbf64ac
- https://git.kernel.org/stable/c/82e68432668ae75b4c814d160f6987ecb0681273
- https://git.kernel.org/stable/c/c4b2e35df919d99bbbed033c2fa0b607f9f463b5