high7.8
CVE-2020-25221
get_gate_page in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting (caused by gate …
Impact
get_gate_page in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting (caused by gate page mishandling) of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit process that can use ptrace() or process_vm_readv(), aka CID-9fa2dd946743.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.7.0 before 5.8.7 |
| Netapp | Cloud Backup | All versions |
| Netapp | Solidfire\, Enterprise Sds \& Hci Storage Node | All versions |
| Netapp | Solidfire \& Hci Management Node | All versions |
| Netapp | Hci Compute Node | All versions |
| Netapp | Solidfire Baseboard Management Controller | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- http://www.openwall.com/lists/oss-security/2020/09/10/4
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7
- https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73a
- https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2
- https://security.netapp.com/advisory/ntap-20201001-0003/
- https://www.openwall.com/lists/oss-security/2020/09/08/4
- http://www.openwall.com/lists/oss-security/2020/09/10/4
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7
- https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73a
- https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2
- https://security.netapp.com/advisory/ntap-20201001-0003/
- https://www.openwall.com/lists/oss-security/2020/09/08/4