high7.8
CVE-2020-15852
An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests.
Impact
An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.5 through 5.7.9 |
| Xen | Xen | through 4.13.1 |
| Netapp | Cloud Backup | All versions |
| Netapp | Steelstore Cloud Integrated Storage | All versions |
| Netapp | Solidfire Baseboard Management Controller | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- http://www.openwall.com/lists/oss-security/2020/07/21/2
- http://xenbits.xen.org/xsa/advisory-329.html
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2
- https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2
- https://security.netapp.com/advisory/ntap-20200810-0001/
- http://www.openwall.com/lists/oss-security/2020/07/21/2
- http://xenbits.xen.org/xsa/advisory-329.html
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2
- https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2
- https://security.netapp.com/advisory/ntap-20200810-0001/