CVE-2026-53042: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: fwctl: Fix class init ordering to avoid NULL pointer dereference on device removal CXL is linked before fwctl in drivers/Makefile. Both use `module_init, so `cxl_pci_driver_init()` runs first. When `cxl_pci_probe()` calls `fwctl_register()` and then `device_add()`, fwctl_class is not yet registered because fwctl_init() hasn't run, causing `class_to_subsys()` to return NULL and skip knode_class initialization. On device removal, `class_to_subsys()` returns non-NULL, and `device_del()` calls `klist_del()` on the uninitialized knode, triggering a NULL pointer dereference.

Засегнати продукти

• Linux Linux: 858ce2f56b5253063f61f6b1c58a6dbf5d71da0b преди a28f56988c8e5bb9375806a5cfb0bf54d662ae3f; 858ce2f56b5253063f61f6b1c58a6dbf5d71da0b преди 1075f2f590fdac147f8b8010c35b606564b5c7d7; 858ce2f56b5253063f61f6b1c58a6dbf5d71da0b преди a55f80233f384dc89ef3425b2e1dd0e6d44bcf29
• Linux Linux: 6.15; преди 6.15; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-53042
• https://nvd.nist.gov/vuln/detail/CVE-2026-53042
• https://git.kernel.org/stable/c/a28f56988c8e5bb9375806a5cfb0bf54d662ae3f
• https://git.kernel.org/stable/c/1075f2f590fdac147f8b8010c35b606564b5c7d7
• https://git.kernel.org/stable/c/a55f80233f384dc89ef3425b2e1dd0e6d44bcf29