vulnerability
Ubuntu: (CVE-2022-49537): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:S/C:C/I:N/A:C) | Feb 26, 2025 | Mar 19, 2025 | Jun 12, 2025 |
Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Fix call trace observed during I/O with CMF enabled
The following was seen with CMF enabled:
BUG: using smp_processor_id() in preemptible
code: systemd-udevd/31711
kernel: caller is lpfc_update_cmf_cmd+0x214/0x420 [lpfc]
kernel: CPU: 12 PID: 31711 Comm: systemd-udevd
kernel: Call Trace:
kernel:
kernel: dump_stack_lvl+0x44/0x57
kernel: check_preemption_disabled+0xbf/0xe0
kernel: lpfc_update_cmf_cmd+0x214/0x420 [lpfc]
kernel: lpfc_nvme_fcp_io_submit+0x23b4/0x4df0 [lpfc]
this_cpu_ptr() calls smp_processor_id() in a preemptible context.
Fix by using per_cpu_ptr() with raw_smp_processor_id() instead.
Solution(s)
References
- CVE-2022-49537
- https://attackerkb.com/topics/CVE-2022-49537
- URL-https://git.kernel.org/linus/d6d45f67a11136cb88a70a29ab22ea6db8ae6bd5
- URL-https://git.kernel.org/stable/c/517e0835cfb2007713ff16c4fb8479f08b16aec7
- URL-https://git.kernel.org/stable/c/ae373d66c427812754db5292eb1481b181daf9ce
- URL-https://git.kernel.org/stable/c/cd7f899de4b1b829125d72ee6fbfd878b637b815
- URL-https://git.kernel.org/stable/c/d6d45f67a11136cb88a70a29ab22ea6db8ae6bd5
- URL-https://www.cve.org/CVERecord?id=CVE-2022-49537
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