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 |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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History
No history.
Information
Published : 2020-07-20 19:15
Updated : 2024-02-28 17:47
NVD link : CVE-2020-15852
Mitre link : CVE-2020-15852
CVE.ORG link : CVE-2020-15852
JSON object : View
Products Affected
netapp
- cloud_backup
- steelstore_cloud_integrated_storage
- solidfire_baseboard_management_controller
xen
- xen
linux
- linux_kernel
CWE
CWE-276
Incorrect Default Permissions