Description
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Limit the number of channel program segments The processing of channel programs, and the CCWs within them, is done recursively. As such, there is an arbitrary (but not architectural) limit to the number of CCWs that can exist in a single channel program. The vfio-ccw logic breaks these channel programs into segments whenever it encounters a Transfer-In-Channel (TIC) CCW, and the combined number of segments count towards the global limit. Impose an equivalent limit to the number of segments until such logic can be made non-recursive.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
0a19e61e6d4c6192077ead760ba0a2d350987d4c to < 15fb4559a7fdf0b8725e433a71cfd03a1313a48baffected0a19e61e6d4c6192077ead760ba0a2d350987d4c to < a1625f66eaa1200068a0e2c05bc90e65182fc4e3affected0a19e61e6d4c6192077ead760ba0a2d350987d4c to < 06f4d6e5a8af6c2072e8cd39dbc512c683ca7fb2affected0a19e61e6d4c6192077ead760ba0a2d350987d4c to < 4ee94790490ae8dcc97df8597f07836c8a81bbcfaffected0a19e61e6d4c6192077ead760ba0a2d350987d4c to < 5405c90d6a47b3014e74ee0618a162449abbbc93affected
Linux Linux
Default version status: affected
4.12affected0 to < 4.12unaffected6.6.153 to ≤ 6.6.*unaffected6.12.105 to ≤ 6.12.*unaffected6.18.46 to ≤ 6.18.*unaffected7.1.10 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/15fb4559a7fdf0b8725e433a71cfd03a1313a48b ↗
- https://git.kernel.org/stable/c/a1625f66eaa1200068a0e2c05bc90e65182fc4e3 ↗
- https://git.kernel.org/stable/c/06f4d6e5a8af6c2072e8cd39dbc512c683ca7fb2 ↗
- https://git.kernel.org/stable/c/4ee94790490ae8dcc97df8597f07836c8a81bbcf ↗
- https://git.kernel.org/stable/c/5405c90d6a47b3014e74ee0618a162449abbbc93 ↗