CVE-2025-38653
proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al
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Description
In the Linux kernel, the following vulnerability has been resolved: proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al Check pde->proc_ops->proc_lseek directly may cause UAF in rmmod scenario. It's a gap in proc_reg_open() after commit 654b33ada4ab("proc: fix UAF in proc_get_inode()"). Followed by AI Viro's suggestion, fix it in same manner.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/1fccbfbae1dd36198dc47feac696563244ad81d3
- https://git.kernel.org/stable/c/33c778ea0bd0fa62ff590497e72562ff90f82b13
- https://git.kernel.org/stable/c/c35b0feb80b48720dfbbf4e33759c7be3faaebb6
- https://git.kernel.org/stable/c/d136502e04d8853a9aecb335d07bbefd7a1519a8
- https://git.kernel.org/stable/c/fc1072d934f687e1221d685cf1a49a5068318f34
References (7)
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