Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0a19e61e6d4c6192077ead760ba0a2d350987d4c before 15fb4559a7fdf0b8725e433a71cfd03a1313a48b; affected 0a19e61e6d4c6192077ead760ba0a2d350987d4c before a1625f66eaa1200068a0e2c05bc90e65182fc4e3; affected 0a19e61e6d4c6192077ead760ba0a2d350987d4c before 06f4d6e5a8af6c2072e8cd39dbc512c683ca7fb2; affected 0a19e61e6d4c6192077ead760ba0a2d350987d4c before 4ee94790490ae8dcc97df8597f07836c8a81bbcf; affected 0a19e61e6d4c6192077ead760ba0a2d350987d4c before 5405c90d6a47b3014e74ee0618a162449abbbc93 |
| Linux / Linux | affected 4.12; unaffected 0 before 4.12; unaffected 6.6.153 through 6.6.*; unaffected 6.12.105 through 6.12.*; unaffected 6.18.46 through 6.18.*; unaffected 7.1.10 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
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
ADP enrichment
No English description supplied.
No references supplied.