CVE-2024-50133

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Source
https://cve.org/CVERecord?id=CVE-2024-50133
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-50133.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-50133
Downstream
Related
Published
2024-11-05T17:10:58.264Z
Modified
2026-03-09T23:55:25.100117Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
LoongArch: Don't crash in stack_top() for tasks without vDSO
Details

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
Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50133.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
803b0fc5c3f2baa6e54978cd576407896f789b08
Fixed
a67d4a02bf43e15544179895ede7d5f97b84b550
Fixed
a94c197d4d749954dfaa37e907fcc8c04e4aad7e
Fixed
041cc3860b06770357876d1114d615333b0fbf31
Fixed
134475a9ab8487527238d270639a8cb74c10aab2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-50133.json"