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.
Fix
Patch, vendor advisory and mitigation references on NVD 6
- https://git.kernel.org/stable/c/1fccbfbae1dd36198dc47feac696563244ad81d3 Patch
- https://git.kernel.org/stable/c/33c778ea0bd0fa62ff590497e72562ff90f82b13 Patch
- https://git.kernel.org/stable/c/c35b0feb80b48720dfbbf4e33759c7be3faaebb6 Patch
- https://git.kernel.org/stable/c/d136502e04d8853a9aecb335d07bbefd7a1519a8 Patch
- https://git.kernel.org/stable/c/fc1072d934f687e1221d685cf1a49a5068318f34 Patch
- https://git.kernel.org/stable/c/ff7ec8dc1b646296f8d94c39339e8d3833d16c05 Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.8 · linux, debianNVD modified 2026-10-15 22:18
Affected (CPE criteria) 2
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
References 7
- https://git.kernel.org/stable/c/1fccbfbae1dd36198dc47feac696563244ad81d3 Patch
- https://git.kernel.org/stable/c/33c778ea0bd0fa62ff590497e72562ff90f82b13 Patch
- https://git.kernel.org/stable/c/c35b0feb80b48720dfbbf4e33759c7be3faaebb6 Patch
- https://git.kernel.org/stable/c/d136502e04d8853a9aecb335d07bbefd7a1519a8 Patch
- https://git.kernel.org/stable/c/fc1072d934f687e1221d685cf1a49a5068318f34 Patch
- https://git.kernel.org/stable/c/ff7ec8dc1b646296f8d94c39339e8d3833d16c05 Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory