Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: libceph: make free_choose_arg_map() resilient to partial allocation free_choose_arg_map() may dereference a NULL pointer if its caller fails after a partial allocation. For example, in decode_choose_args(), if allocation of arg_map->args fails, execution jumps to the fail label and free_choose_arg_map() is called. Since arg_map->size is updated to a non-zero value before memory allocation, free_choose_arg_map() will iterate over arg_map->args and dereference a NULL pointer. To prevent this potential NULL pointer dereference and make free_choose_arg_map() more resilient, add checks for pointers before iterating.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5cf9c4a9959b6273675310d14a834ef14fbca37c before 9b3730dabcf3764bfe3ff07caf55e641a0b45234; affected 5cf9c4a9959b6273675310d14a834ef14fbca37c before 851241d3f78a5505224dc21c03d8692f530256b4; affected 5cf9c4a9959b6273675310d14a834ef14fbca37c before ec1850f663da64842614c86b20fe734be070c2ba; affected 5cf9c4a9959b6273675310d14a834ef14fbca37c before 8081faaf089db5280c3be820948469f7c58ef8dd; affected 5cf9c4a9959b6273675310d14a834ef14fbca37c before c4c2152a858c0ce4d2bff6ca8c1d5b0ef9f2cbdf; affected 5cf9c4a9959b6273675310d14a834ef14fbca37c before f21c3fdb96833aac2f533506899fe38c19cf49d5; affected 5cf9c4a9959b6273675310d14a834ef14fbca37c before e3fe30e57649c551757a02e1cad073c47e1e075e |
| Linux / Linux | affected 4.13; unaffected 0 before 4.13; unaffected 5.10.248 through 5.10.*; unaffected 5.15.198 through 5.15.*; unaffected 6.1.161 through 6.1.*; unaffected 6.6.121 through 6.6.*; unaffected 6.12.66 through 6.12.*; unaffected 6.18.6 through 6.18.*; unaffected 6.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9b3730dabcf3764bfe3ff07caf55e641a0b45234
- https://git.kernel.org/stable/c/851241d3f78a5505224dc21c03d8692f530256b4
- https://git.kernel.org/stable/c/ec1850f663da64842614c86b20fe734be070c2ba
- https://git.kernel.org/stable/c/8081faaf089db5280c3be820948469f7c58ef8dd
- https://git.kernel.org/stable/c/c4c2152a858c0ce4d2bff6ca8c1d5b0ef9f2cbdf
- https://git.kernel.org/stable/c/f21c3fdb96833aac2f533506899fe38c19cf49d5
- https://git.kernel.org/stable/c/e3fe30e57649c551757a02e1cad073c47e1e075e
ADP enrichment
No English description supplied.
No references supplied.