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Tracker / CVE-2026-64033

CVE-2026-64033

Critica 9.8

In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs: Fix use-after-free in path file creation cleanup In the error path of rtrs_srv_create_path_files(), the sysfs root folders may already have been created and srv_path->kobj may already have been initialized. If a later step fails, the cleanup currently calls kobject_put(&srv_path->kobj) before rtrs_srv_destroy_once_sysfs_root_folders(srv_path). kobject_put() may drop the last reference to srv_path->kobj and invoke the release callback, rtrs_srv_release(), which frees srv_path. The following call to rtrs_srv_destroy_once_sysfs_root_folders(srv_path) then dereferences srv_path internally to access srv_path->srv, resulting in a use-after-free. This failure path is reached before rtrs_srv_create_path_files() returns success, so the successful-path lifetime handling is not involved. Fix this by destroying the sysfs root folders before calling kobject_put(&srv_path->kobj), so srv_path is still valid while the helper accesses it. This issue was found by a static analysis tool I am developing.

Prodotti e versioni affette

linux linux_kernel
linux linux_kernel · 5.15.61 → 5.15.209
linux linux_kernel · 5.17 → 6.1.175
linux linux_kernel · 6.13 → 6.18.34
linux linux_kernel · 6.19 → 7.0.11
linux linux_kernel · 6.2 → 6.6.142
linux linux_kernel · 6.7 → 6.12.92

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