linux: In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix region HPA ordering validation...
CVE-2022-49894 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49894, released May 1, 2025. It is not reported as exploited. Patch Radar priority: Routine.
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: <TASK> 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
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.0.8-1 | DEBIAN-CVE-2022-49894 | May 1, 2025 |
| linux · Debian 13.5 (trixie) | 6.0.8-1 | DEBIAN-CVE-2022-49894 | May 1, 2025 |
| linux · Debian 14 | 6.0.8-1 | DEBIAN-CVE-2022-49894 | May 1, 2025 |
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