CVE-2026-80554
CVE CVE-2026-80554EUVD EUVD-2026-66469Published 2026-08-26T14:37:22.000ZLast changed 2026-08-27T05:01:42.000ZCVSS 9.3
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 0a19e61e6d4c6192077ead760ba0a2d350987d4c <a1625f66eaa1200068a0e2c05bc90e65182fc4e3; 0a19e61e6d4c6192077ead760ba0a2d350987d4c <4ee94790490ae8dcc97df8597f07836c8a81bbcf; 4.12; 0a19e61e6d4c6192077ead760ba0a2d350987d4c <5405c90d6a47b3014e74ee0618a162449abbbc93; 0a19e61e6d4c6192077ead760ba0a2d350987d4c <15fb4559a7fdf0b8725e433a71cfd03a1313a48b; patch: 0; patch: 6.18.46; patch: 6.6.153; patch: 7.2; patch: 6.12.105; patch: 7.1.10; 0a19e61e6d4c6192077ead760ba0a2d350987d4c <06f4d6e5a8af6c2072e8cd39dbc512c683ca7fb2
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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