CVE-2024-56741 Information

Description

In the Linux kernel the following vulnerability has been resolved:

apparmor: test: Fix memory leak for aa_unpack_strdup()

The string allocated by kmemdup() in aa_unpack_strdup() is not freed and cause following memory leaks free them to fix it.

unreferenced object 0xffffff80c6af8a50 (size 8):
  comm \kunit_try_catch\ pid 225 jiffies 4294894407
  hex dump (first 8 bytes):
    74 65 73 74 69 6e 67 00                          testing.
  backtrace (crc 5eab668b):
    [<0000000001e3714d>] kmemleak_alloc+0x34/0x40
    [<000000006e6c7776>] __kmalloc_node_track_caller_noprof+0x300/0x3e0
    [<000000006870467c>] kmemdup_noprof+0x34/0x60
    [<000000001176bb03>] aa_unpack_strdup+0xd0/0x18c
    [<000000008ecde918>] policy_unpack_test_unpack_strdup_with_null_name+0xf8/0x3ec
    [<0000000032ef8f77>] kunit_try_run_case+0x13c/0x3ac
    [<00000000f3edea23>] kunit_generic_run_threadfn_adapter+0x80/0xec
    [<00000000adf936cf>] kthread+0x2e8/0x374
    [<0000000041bb1628>] ret_from_fork+0x10/0x20
unreferenced object 0xffffff80c2a29090 (size 8):
  comm \kunit_try_catch\ pid 227 jiffies 4294894409
  hex dump (first 8 bytes):
    74 65 73 74 69 6e 67 00                          testing.
  backtrace (crc 5eab668b):
    [<0000000001e3714d>] kmemleak_alloc+0x34/0x40
    [<000000006e6c7776>] __kmalloc_node_track_caller_noprof+0x300/0x3e0
    [<000000006870467c>] kmemdup_noprof+0x34/0x60
    [<000000001176bb03>] aa_unpack_strdup+0xd0/0x18c
    [<0000000046a45c1a>] policy_unpack_test_unpack_strdup_with_name+0xd0/0x3c4
    [<0000000032ef8f77>] kunit_try_run_case+0x13c/0x3ac
    [<00000000f3edea23>] kunit_generic_run_threadfn_adapter+0x80/0xec
    [<00000000adf936cf>] kthread+0x2e8/0x374
    [<0000000041bb1628>] ret_from_fork+0x10/0x20

Reference

https://git.kernel.org/stable/c/2a9b68f2dc6812bd1b8880b5c00e60203d6f61f6 https://git.kernel.org/stable/c/5354599855a9b5568e05ce686119ee3ff8b19bd5 https://git.kernel.org/stable/c/59a149e7c38e7b76616c8b333fc6aa5b6fb2293c https://git.kernel.org/stable/c/7290f59231910ccba427d441a6e8b8c6f6112448 https://git.kernel.org/stable/c/89265f88701e54dde255ddf862093baeca57548c https://git.kernel.org/stable/c/d62ee5739a66644b0e7f11e657d562458cdcdea3 https://git.kernel.org/stable/c/f856246ff6da25c4f8fdd73a9c875e878b085e9f