CVE-2024-50084 - Microchip Linux Kernel VCAP API Use-After-Free and Memory Leak Vulnerability

CVE ID : CVE-2024-50084
Published : Oct. 29, 2024, 1:15 a.m. | 24 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: net: microchip: vcap api: Fix memory leaks in vcap_api_encode_rule_test() Commit a3c1e45156ad ("net: microchip: vcap: Fix use-after-free error in kunit test") fixed the use-after-free error, but introduced below memory leaks by removing necessary vcap_free_rule(), add it to fix it. unreferenced object 0xffffff80ca58b700 (size 192): comm "kunit_try_catch", pid 1215, jiffies 4294898264 hex dump (first 32 bytes): 00 12 7a 00 05 00 00 00 0a 00 00 00 64 00 00 00 ..z.........d... 00 00 00 00 00 00 00 00 00 04 0b cc 80 ff ff ff ................ backtrace (crc 9c09c3fe): [] kmemleak_alloc+0x34/0x40 [] __kmalloc_cache_noprof+0x26c/0x2f4 [] vcap_alloc_rule+0x3cc/0x9c4 [] vcap_api_encode_rule_test+0x1ac/0x16b0 [] kunit_try_run_case+0x13c/0x3ac [] kunit_generic_run_threadfn_adapter+0x80/0xec [] kthread+0x2e8/0x374 [] ret_from_fork+0x10/0x20 unreferenced object 0xffffff80cc0b0400 (size 64): comm "kunit_try_catch", pid 1215, jiffies 4294898265 hex dump (first 32 bytes): 80 04 0b cc 80 ff ff ff 18 b7 58 ca 80 ff ff ff ..........X..... 39 00 00 00 02 00 00 00 06 05 04 03 02 01 ff ff 9............... backtrace (crc daf014e9): [] kmemleak_alloc+0x34/0x40 [] __kmalloc_cache_noprof+0x26c/0x2f4 [] vcap_rule_add_key+0x2cc/0x528 [] vcap_api_encode_rule_test+0x224/0x16b0 [] kunit_try_run_case+0x13c/0x3ac [] kunit_generic_run_threadfn_adapter+0x80/0xec [] kthread+0x2e8/0x374 [] ret_from_fork+0x10/0x20 unreferenced object 0xffffff80cc0b0700 (size 64): comm "kunit_try_catch", pid 1215, jiffies 4294898265 hex dump (first 32 bytes): 80 07 0b cc 80 ff ff ff 28 b7 58 ca 80 ff ff ff ........(.X..... 3c 00 00 00 00 00 00 00 01 2f 03 b3 ec ff ff ff <........ backtrace>] kmemleak_alloc+0x34/0x40 [] __kmalloc_cache_noprof+0x26c/0x2f4 [] vcap_rule_add_action+0x2d0/0x52c [] vcap_api_encode_rule_test+0x4d4/0x16b0 [] kunit_try_run_case+0x13c/0x3ac [] kunit_generic_run_threadfn_adapter+0x80/0xec [] kthread+0x2e8/0x374 [] ret_from_fork+0x10/0x20 unreferenced object 0xffffff80cc0b0900 (size 64): comm "kunit_try_catch", pid 1215, jiffies 4294898266 hex dump (first 32 bytes): 80 09 0b cc 80 ff ff ff 80 06 0b cc 80 ff ff ff ................ 7d 00 00 00 01 00 00 00 00 00 00 00 ff 00 00 00 }............... backtrace (crc 34181e56): [] kmemleak_alloc+0x34/0x40 [] __kmalloc_cache_noprof+0x26c/0x2f4 [] vcap_rule_add_key+0x2cc/0x528 [] vcap_val_rule+0xcf0/0x13e8 [] vcap_api_encode_rule_test+0x678/0x16b0 [] kunit_try_run_case+0x13c/0x3ac [] kunit_generic_run_threadfn_adapter+0x80/0xec [] kthread+0x2e8/0x374 [] ret_from_fork+0x10/0x20 unreferenced object 0xffffff80cc0b0980 (size 64): comm "kunit_try_catch", pid 1215, jiffies 4294898266 hex dump (first 32 bytes): 18 b7 58 ca 80 ff ff ff 00 09 0b cc 80 ff ff ff ..X............. 67 00 00 00 00 00 00 00 01 01 74 88 c0 ff ff ff g.........t..... backtrace (crc 275fd9be): [] kmemleak_alloc+0x34/0x40 [] __kmalloc_cache_noprof+0x26c/0x2f4 [] vcap_rule_add_key+0x2cc/0x528 [] test_add_de ---truncated---
Severity: 0.0 | NA
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