Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2024-56741

Disclosure Date: December 29, 2024
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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

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CVSS V3 Severity and Metrics
Base Score:
5.5 Medium
Impact Score:
3.6
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

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