CVE-2022-49894
- Source
- https://cve.org/CVERecord?id=CVE-2022-49894
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49894.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49894
- Downstream
- Published
- 2025-05-01T14:10:37Z
- Modified
- 2026-08-12T03:51:21Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- cxl/region: Fix region HPA ordering validation
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
cxl/region: Fix region HPA ordering validation
Some regions may not have any address space allocated. Skip them when validating HPA order otherwise a crash like the following may result:
devm_cxl_add_region: cxl_acpi cxl_acpi.0: decoder3.4: created region9 BUG: kernel NULL pointer dereference, address: 0000000000000000 [..] RIP: 0010:store_targetN+0x655/0x1740 [cxl_core] [..] Call Trace: kernfs_fop_write_iter+0x144/0x200 vfs_write+0x24a/0x4d0 ksys_write+0x69/0xf0 do_syscall_64+0x3a/0x90
store_targetN+0x655/0x1740: alloc_region_ref at drivers/cxl/core/region.c:676 (inlined by) cxl_port_attach_region at drivers/cxl/core/region.c:850 (inlined by) cxl_region_attach at drivers/cxl/core/region.c:1290 (inlined by) attach_target at drivers/cxl/core/region.c:1410 (inlined by) store_targetN at drivers/cxl/core/region.c:1453
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49894.json" }- References
-
- https://git.kernel.org/stable/c/12316b9f7c18138ae656050cfd716728e27b7e2f
- https://git.kernel.org/stable/c/a90accb358ae33ea982a35595573f7a045993f8b
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49894.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-49894
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git