Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: habanalabs/gaudi: Fix a potential use after free in gaudi_memset_device_memory Our code analyzer reported a uaf. In gaudi_memset_device_memory, cb is get via hl_cb_kernel_create() with 2 refcount. If hl_cs_allocate_job() failed, the execution runs into release_cb branch. One ref of cb is dropped by hl_cb_put(cb) and could be freed if other thread also drops one ref. Then cb is used by cb->id later, which is a potential uaf. My patch add a variable 'id' to accept the value of cb->id before the hl_cb_put(cb) is called, to avoid the potential uaf.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 423815bf02e257091d5337be5c63b57fc29e4254 before b49f5af30b0e4064fbd91e83823a4bfcb2c7a3e7; affected 423815bf02e257091d5337be5c63b57fc29e4254 before 115726c5d312b462c9d9931ea42becdfa838a076 |
| Linux / Linux | affected 5.12; unaffected 0 before 5.12; unaffected 5.12.7 through 5.12.*; unaffected 5.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/b49f5af30b0e4064fbd91e83823a4bfcb2c7a3e7
- https://git.kernel.org/stable/c/115726c5d312b462c9d9931ea42becdfa838a076
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.