CVE-2022-50228
What it is
In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 Don't BUG/WARN on interrupt injection due to GIF being cleared, since it's trivial for userspace to force the situation via KVM_SET_VCPU_EVENTS (even if having at least a WARN there would be correct for KVM internally generated injections). kernel BUG at arch/x86/kvm/svm/svm.c:3386! invalid opcode: 0000 [#1] SMP CPU: 15 PID: 926 Comm: smm_test Not tainted 5.17.0-rc3+ #264 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 RIP: 0010:svm_inject_irq+0xab/0xb0 [kvm_amd] Code: <0f> 0b 0f 1f 00 0f 1f 44 00 00 80 3d ac b3 01 00 00 55 48 89 f5 53 RSP: 0018:ffffc90000b37d88 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88810a234ac0 RCX: 0000000000000006 RDX: 0000000000000000 RSI: ffffc90000b37df7 RDI: ffff88810a234ac0 RBP: ffffc90000b37df7 R08: ffff88810a1fa410 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888109571000 R14: ffff88810a234ac0 R15: 0000000000000000 FS: 0000000001821380(0000) GS:ffff88846fdc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f74fc550008 CR3: 000000010a6fe000 CR4: 0000000000350ea0 Call Trace: <TASK> inject_pending_event+0x2f7/0x4c0 [kvm] kvm_arch_vcpu_ioctl_run+0x791/0x17a0 [kvm] kvm_vcpu_ioctl+0x26d/0x650 [kvm] __x64_sys_ioctl+0x82/0xb0 do_syscall_64+0x3b/0xc0 entry_SYSCALL_64_after_hwframe+0x44/0xae </TASK>
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.3% 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: 0.3% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Linux Kernel < 4.9.326
- Linux Kernel < 4.14.291
- Linux Kernel < 4.19.256
- Linux Kernel < 5.4.211
- Linux Kernel < 5.10.137
- Linux Kernel < 5.15.61
- Linux Kernel < 5.18.18
- Linux Kernel < 5.19.2
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-2022-50228.md and follow it. Check whether this project is affected by CVE-2022-50228. 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/2c49adeb020995236e63722ef6d0bee14372f471
- https://git.kernel.org/stable/c/2eee1dba70f57148fc7f8252613bfae6bd4b04e3
- https://git.kernel.org/stable/c/3d4e2d884da6312df7c9b85fbf671de49204ead6
- https://git.kernel.org/stable/c/68e1313bb8809e8addcd9431f2bfea0e8ddbca80
- https://git.kernel.org/stable/c/6afe88fbb40eac3291a8728688d61fdc745d8008
- https://git.kernel.org/stable/c/6fcbab82ccbcde915644085f73d3487938bda42d
- https://git.kernel.org/stable/c/8bb683490278005b4caf61e22b0828a04d282e86
- https://git.kernel.org/stable/c/c3396c1c8b87510f2ac2a674948156577559d42d
- https://git.kernel.org/stable/c/f17c31c48e5cde9895a491d91c424eeeada3e134
References
- https://git.kernel.org/stable/c/2c49adeb020995236e63722ef6d0bee14372f471
- https://git.kernel.org/stable/c/2eee1dba70f57148fc7f8252613bfae6bd4b04e3
- https://git.kernel.org/stable/c/3d4e2d884da6312df7c9b85fbf671de49204ead6
- https://git.kernel.org/stable/c/68e1313bb8809e8addcd9431f2bfea0e8ddbca80
- https://git.kernel.org/stable/c/6afe88fbb40eac3291a8728688d61fdc745d8008
- https://git.kernel.org/stable/c/6fcbab82ccbcde915644085f73d3487938bda42d
- https://git.kernel.org/stable/c/8bb683490278005b4caf61e22b0828a04d282e86
- https://git.kernel.org/stable/c/c3396c1c8b87510f2ac2a674948156577559d42d
- https://git.kernel.org/stable/c/f17c31c48e5cde9895a491d91c424eeeada3e134