CVE-2026-80550
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
s390/vfio_ccw: Fix out of bounds check on CCW array
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Fix out of bounds check on CCW array The routine ccwchain_calc_length() counts the number of channel command words (CCWs) that are chained together in a single channel program, and rejects anything larger than CCWCHAIN_LEN_MAX (256) CCWs. The loop itself is "do..while (count < 257)", and while the logic in is_cpa_within_range() correctly adjusts between the 0-index array of CCWs and the count of CCWs starting at 1, this means it would look at a possible 257th CCW before ending the loop and (correctly) returning an error. Fix this by restructuring the loop to break as soon as 256 CCWs (thus indexes 0-255) are examined, without looking at memory outside the range.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0a19e61e6d4c6192077ead760ba0a2d350987d4c | affected | git | 0282fb1c4b638eecfe2cc558092c460911d8f7e2 | Unavailable | None listed |
| 0a19e61e6d4c6192077ead760ba0a2d350987d4c | affected | git | 907adc667d902fafbdb2d740d57b55bd025dc4cd | Unavailable | None listed |
| 0a19e61e6d4c6192077ead760ba0a2d350987d4c | affected | git | f20be33d093ce7630c17ff7ed93caf7eaf8ac1a3 | Unavailable | None listed |
| 0a19e61e6d4c6192077ead760ba0a2d350987d4c | affected | git | af3f80ca4c8b17f20f9e588def076288fdb49e65 | Unavailable | None listed |
| 0a19e61e6d4c6192077ead760ba0a2d350987d4c | affected | git | 499a8a66b1598bfab97182aed15e0f1646074a3d | Unavailable | None listed |
| 0a19e61e6d4c6192077ead760ba0a2d350987d4c | affected | git | 4c2e1d359d7a2b82cdf3254e4e480af9417f99fb | Unavailable | None listed |
| 0a19e61e6d4c6192077ead760ba0a2d350987d4c | affected | git | d5d096cd9369e986d4e5153baa86b8b35c283e09 | Unavailable | None listed |
| 0a19e61e6d4c6192077ead760ba0a2d350987d4c | affected | git | a005b7f1a491ffda61bff0fd0f6548f8986fb977 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.12 | Unavailable | None listed |
| 5.10.266 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.217 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.184 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.153 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.105 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.46 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.10 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |