Linux kernel at a glance
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| Month | Vulnerabilities | Critical |
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| Nov 2026 | 0 | 0 |
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| Aug 2026 | 0 | 0 |
| Jul 2026 | 0 | 0 |
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| May 2026 | 0 | 0 |
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| Dec 2025 | 0 | 0 |
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| Mar 2025 | 0 | 0 |
| Feb 2025 | 0 | 0 |
| Jan 2025 | 0 | 0 |
| Dec 2024 | 0 | 0 |
3 results · Feed
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High 8.8CVE-2021-3492 Public exploit
Ubuntu linux kernel shiftfs file system double free vulnerability
Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could u…
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High 8.8
The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting …
KEV Oct 20, 2022 -
High 7.1CVE-2019-15794 Public exploit
Reference counting error in overlayfs/shiftfs error path when used in conjuction with aufs
Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma->vm_file in their mmap handlers. On error the original value is not restored, and the reference is put for t…