In the Linux kernel, the following vulnerability has been resolved:
LoongArch: Don't crash in stack_top() for tasks without vDSO
Not all tasks have a vDSO mapped, for example kthreads never do. If such
a task ever ends up calling stack_top(), it will derefence the NULL vdso
pointer and crash.
This can for example happen when using kunit:
[<9000000000203874>] stack_top+0x58/0xa8
[<90000000002956cc>] arch_pick_mmap_layout+0x164/0x220
[<90000000003c284c>] kunit_vm_mmap_init+0x108/0x12c
[<90000000003c1fbc>] __kunit_add_resource+0x38/0x8c
[<90000000003c2704>] kunit_vm_mmap+0x88/0xc8
[<9000000000410b14>] usercopy_test_init+0xbc/0x25c
[<90000000003c1db4>] kunit_try_run_case+0x5c/0x184
[<90000000003c3d54>] kunit_generic_run_threadfn_adapter+0x24/0x48
[<900000000022e4bc>] kthread+0xc8/0xd4
[<9000000000200ce8>] ret_from_kernel_thread+0xc/0xa4
References
Configurations
Configuration 1 (hide)
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History
07 Nov 2024, 21:17
Type | Values Removed | Values Added |
---|---|---|
CWE | CWE-476 | |
First Time |
Linux
Linux linux Kernel |
|
CPE | cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* |
|
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
References | () https://git.kernel.org/stable/c/041cc3860b06770357876d1114d615333b0fbf31 - Patch | |
References | () https://git.kernel.org/stable/c/134475a9ab8487527238d270639a8cb74c10aab2 - Patch | |
References | () https://git.kernel.org/stable/c/a67d4a02bf43e15544179895ede7d5f97b84b550 - Patch | |
References | () https://git.kernel.org/stable/c/a94c197d4d749954dfaa37e907fcc8c04e4aad7e - Patch |
06 Nov 2024, 18:17
Type | Values Removed | Values Added |
---|---|---|
Summary |
|
05 Nov 2024, 18:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2024-11-05 18:15
Updated : 2024-11-07 21:17
NVD link : CVE-2024-50133
Mitre link : CVE-2024-50133
CVE.ORG link : CVE-2024-50133
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference