CVE-2026-80550
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
26/08/2026
Last modified:
26/08/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
s390/vfio_ccw: Fix out of bounds check on CCW array<br />
<br />
The routine ccwchain_calc_length() counts the number of channel<br />
command words (CCWs) that are chained together in a single channel<br />
program, and rejects anything larger than CCWCHAIN_LEN_MAX (256) CCWs.<br />
<br />
The loop itself is "do..while (count
Impact
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/0282fb1c4b638eecfe2cc558092c460911d8f7e2
- https://git.kernel.org/stable/c/499a8a66b1598bfab97182aed15e0f1646074a3d
- https://git.kernel.org/stable/c/4c2e1d359d7a2b82cdf3254e4e480af9417f99fb
- https://git.kernel.org/stable/c/907adc667d902fafbdb2d740d57b55bd025dc4cd
- https://git.kernel.org/stable/c/a005b7f1a491ffda61bff0fd0f6548f8986fb977
- https://git.kernel.org/stable/c/af3f80ca4c8b17f20f9e588def076288fdb49e65
- https://git.kernel.org/stable/c/d5d096cd9369e986d4e5153baa86b8b35c283e09
- https://git.kernel.org/stable/c/f20be33d093ce7630c17ff7ed93caf7eaf8ac1a3