CVE-2024-50133

EPSS 0.22%
Veröffentlicht 05.11.2024 18:15:16
Zuletzt bearbeitet 03.11.2025 23:16:53
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LoongArch: Don't crash in stack_top() for tasks without vDSO

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

Betroffene Produkte Warnungen 0 Metriken 3 CWE 1 Referenzen 8

NVD 7 VulnDex Vulnerability Enrichment 4

Daten sind bereitgestellt durch National Vulnerability Database (NVD)

Linux ≫ Linux Kernel Version >= 5.19 < 6.1.115

Linux ≫ Linux Kernel Version >= 6.2 < 6.6.59

Linux ≫ Linux Kernel Version >= 6.7 < 6.11.6

Linux ≫ Linux Kernel Version6.12 Updaterc1

Linux ≫ Linux Kernel Version6.12 Updaterc2

Linux ≫ Linux Kernel Version6.12 Updaterc3

Linux ≫ Linux Kernel Version6.12 Updaterc4

VulnDex Vulnerability Enrichment

Diese Information steht angemeldeten Benutzern zur Verfügung.

Zu dieser CVE wurde keine Warnung gefunden.

EPSS Metriken
Typ	Quelle	Score	Percentile
EPSS	FIRST.org	0.22%	0.119

CVSS Metriken
Quelle	Base Score	Exploit Score	Impact Score	Vector String
nvd@nist.gov	5.5	1.8	3.6	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0	5.5	1.8	3.6	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H