Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: take vmap_purge_lock in shrinker decay_va_pool_node() can be invoked concurrently from two paths: __purge_vmap_area_lazy() when pools are being purged, and the shrinker via vmap_node_shrink_scan(). However, decay_va_pool_node() is not safe to run concurrently, and the shrinker path currently lacks serialization, leading to races and possible leaks. Protect decay_va_pool_node() by taking vmap_purge_lock in the shrinker path to ensure serialization with purge users.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7679ba6b36dbb300b757b672d6a32a606499e14b before c15ff206ba78820bf2873d0c668a882e99f4b631; affected 7679ba6b36dbb300b757b672d6a32a606499e14b before 687ccdf582169cd680aeaf24cc953807c4cd4345; affected 7679ba6b36dbb300b757b672d6a32a606499e14b before 12f2341b4c235d5593a433abac201c1c6725787f; affected 7679ba6b36dbb300b757b672d6a32a606499e14b before ec05f51f1e65bce95528543eb73fda56fd201d94 |
| Linux / Linux | affected 6.9; unaffected 0 before 6.9; unaffected 6.12.96 through 6.12.*; unaffected 6.18.27 through 6.18.*; unaffected 7.0.4 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.