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.
References
Link | Resource |
---|---|
http://www.openwall.com/lists/oss-security/2020/07/21/2 | Mailing List Third Party Advisory |
http://xenbits.xen.org/xsa/advisory-329.html | Patch Third Party Advisory |
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2 | Mailing List Patch Vendor Advisory |
https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2 | Patch Third Party Advisory |
https://security.netapp.com/advisory/ntap-20200810-0001/ | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2020-07-20T18:54:52
Updated: 2020-08-10T11:06:08
Reserved: 2020-07-20T00:00:00
Link: CVE-2020-15852
JSON object: View
NVD Information
Status : Analyzed
Published: 2020-07-20T19:15:11.397
Modified: 2022-12-03T14:32:06.300
Link: CVE-2020-15852
JSON object: View
Redhat Information
No data.
CWE