Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix potential double free in create_var_ref() In create_var_ref(), init_var_ref() is called to initialize the fields of variable ref_field, which is allocated in the previous function call to create_hist_field(). Function init_var_ref() allocates the corresponding fields such as ref_field->system, but frees these fields when the function encounters an error. The caller later calls destroy_hist_field() to conduct error handling, which frees the fields and the variable itself. This results in double free of the fields which are already freed in the previous function. Fix this by storing NULL to the corresponding fields when they are freed in init_var_ref().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 067fe038e70f6e64960d26a79c4df5f1413d0f13 before f8b383f83cb573152c577eca1ef101e89995b72a; affected 067fe038e70f6e64960d26a79c4df5f1413d0f13 before c27f744ceefadc7bbeb14233b6abc150ced617d2; affected 067fe038e70f6e64960d26a79c4df5f1413d0f13 before 058cb6d86b9789377216c936506b346aaa1eb581; affected 067fe038e70f6e64960d26a79c4df5f1413d0f13 before 37443b3508b8cce6832f8d25cb4550b2f7801f50; affected 067fe038e70f6e64960d26a79c4df5f1413d0f13 before 4fdfb15e08598711dbf50daf56a33965232daf0e; affected 067fe038e70f6e64960d26a79c4df5f1413d0f13 before bd83ff3bbfb003832481c9bff999d12385f396ae; affected 067fe038e70f6e64960d26a79c4df5f1413d0f13 before 99696a2592bca641eb88cc9a80c90e591afebd0f |
| Linux / Linux | affected 4.17; unaffected 0 before 4.17; unaffected 4.19.247 through 4.19.*; unaffected 5.4.198 through 5.4.*; unaffected 5.10.121 through 5.10.*; unaffected 5.15.46 through 5.15.*; unaffected 5.17.14 through 5.17.*; unaffected 5.18.3 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/f8b383f83cb573152c577eca1ef101e89995b72a
- https://git.kernel.org/stable/c/c27f744ceefadc7bbeb14233b6abc150ced617d2
- https://git.kernel.org/stable/c/058cb6d86b9789377216c936506b346aaa1eb581
- https://git.kernel.org/stable/c/37443b3508b8cce6832f8d25cb4550b2f7801f50
- https://git.kernel.org/stable/c/4fdfb15e08598711dbf50daf56a33965232daf0e
- https://git.kernel.org/stable/c/bd83ff3bbfb003832481c9bff999d12385f396ae
- https://git.kernel.org/stable/c/99696a2592bca641eb88cc9a80c90e591afebd0f
ADP enrichment
No English description supplied.
No references supplied.