In the Linux kernel, the following vulnerability has been resolved: mm: do file ownership checks with the proper mount idmap Ever since idmapped mounts were introduced, inode ownership checks (for …
Medium CVSS 5.5
Summary
In the Linux kernel, the following vulnerability has been resolved: mm: do file ownership checks with the proper mount idmap Ever since idmapped mounts were introduced, inode ownership checks (for side-channel protection) in mincore() and madvise(MADV_PAGEOUT) were done against the nop_mnt_idmap, which completely ignores the file's mount's idmap. This results in odd edgecases like: 1) mount/bind-mount with an idmap userA:userB:1 2) userB runs an owner_or_capable() check on file that is owne…
In-depth triage
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
Sources
- NVD DATABASE
Original Links
- https://git.kernel.org/stable/c/04ba248d02d9eaa3d9077b00a6134caa75fa3e90 Patch
- https://git.kernel.org/stable/c/5c942ad7df75925ee166e7f0fb36892d8dde376b Patch
- https://git.kernel.org/stable/c/744b23aa430d52f5c8e4dbff7d71496d6643bed2 Patch
- https://git.kernel.org/stable/c/8344bdf0629457e532797b42d9d2bbf2a2900bbf Patch
- https://git.kernel.org/stable/c/e187bc02f8fa4226d62814592cf064ee4557c470 Patch
Timeline
- nvd_ingest NVD