Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: capabilities: fix potential memleak on error path from vfs_getxattr_alloc() In cap_inode_getsecurity(), we will use vfs_getxattr_alloc() to complete the memory allocation of tmpbuf, if we have completed the memory allocation of tmpbuf, but failed to call handler->get(...), there will be a memleak in below logic: |-- ret = (int)vfs_getxattr_alloc(mnt_userns, ...) | /* ^^^ alloc for tmpbuf */ |-- value = krealloc(*xattr_value, error + 1, flags) | /* ^^^ alloc memory */ |-- error = handler->get(handler, ...) | /* error! */ |-- *xattr_value = value | /* xattr_value is &tmpbuf (memory leak!) */ So we will try to free(tmpbuf) after vfs_getxattr_alloc() fails to fix it. [PM: subject line and backtrace tweaks]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8db6c34f1dbc8e06aa016a9b829b06902c3e1340 before 6bb00eb21c0fbf18e5d3538c9ff0cf63fd0ace85; affected 8db6c34f1dbc8e06aa016a9b829b06902c3e1340 before 90577bcc01c4188416a47269f8433f70502abe98; affected 8db6c34f1dbc8e06aa016a9b829b06902c3e1340 before 0c3e6288da650d1ec911a259c77bc2d88e498603; affected 8db6c34f1dbc8e06aa016a9b829b06902c3e1340 before cdf01c807e974048c43c7fd3ca574f6086a57906; affected 8db6c34f1dbc8e06aa016a9b829b06902c3e1340 before 2de8eec8afb75792440b8900a01d52b8f6742fd1; affected 8db6c34f1dbc8e06aa016a9b829b06902c3e1340 before 7480aeff0093d8c54377553ec6b31110bea37b4d; affected 8db6c34f1dbc8e06aa016a9b829b06902c3e1340 before 8cf0a1bc12870d148ae830a4ba88cfdf0e879cee |
| Linux / Linux | affected 4.14; unaffected 0 before 4.14; unaffected 4.14.299 through 4.14.*; unaffected 4.19.265 through 4.19.*; unaffected 5.4.224 through 5.4.*; unaffected 5.10.154 through 5.10.*; unaffected 5.15.78 through 5.15.*; unaffected 6.0.8 through 6.0.*; unaffected 6.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6bb00eb21c0fbf18e5d3538c9ff0cf63fd0ace85
- https://git.kernel.org/stable/c/90577bcc01c4188416a47269f8433f70502abe98
- https://git.kernel.org/stable/c/0c3e6288da650d1ec911a259c77bc2d88e498603
- https://git.kernel.org/stable/c/cdf01c807e974048c43c7fd3ca574f6086a57906
- https://git.kernel.org/stable/c/2de8eec8afb75792440b8900a01d52b8f6742fd1
- https://git.kernel.org/stable/c/7480aeff0093d8c54377553ec6b31110bea37b4d
- https://git.kernel.org/stable/c/8cf0a1bc12870d148ae830a4ba88cfdf0e879cee
ADP enrichment
No English description supplied.
No references supplied.