Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: auxdisplay: line-display: fix NULL dereference in linedisp_release linedisp_release() currently retrieves the enclosing struct linedisp via to_linedisp(). That lookup depends on the attachment list, but the attachment may already have been removed before put_device() invokes the release callback. This can happen in linedisp_unregister(), and can also be reached from some linedisp_register() error paths. In that case, to_linedisp() returns NULL and linedisp_release() dereferences it while freeing the display resources. The struct device released here is the embedded linedisp->dev used by linedisp_register(), so retrieve the enclosing object directly with container_of() instead.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 66c93809487e62c4f59ef08625a3fbc0a7de6dd2 before 625fdac41cfc4ca9e1774a0d31d7985aec2c1d66; affected 66c93809487e62c4f59ef08625a3fbc0a7de6dd2 before 7f138de156b20d9f9da6f72f90b63c01941d97d3 |
| Linux / Linux | affected 6.19; unaffected 0 before 6.19; unaffected 6.19.12 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.