CVE-2024-50133— LoongArch: Don't crash in stack_top() for tasks without vDSO
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I. Basic Information for CVE-2024-50133
Vulnerability Information
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Vulnerability Title
LoongArch: Don't crash in stack_top() for tasks without vDSO
Source: NVD (National Vulnerability Database)
Vulnerability Description
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
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于LoongArch架构中，任务可能在没有vDSO映射的情况下调用stack_top函数，从而引发空指针取消引用，导致系统崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-50133
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Same Patch Batch · Linux · 2024-11-05 · 50 CVEs total
| CVE-2024-50124 | Bluetooth: ISO: Fix UAF on iso_sock_timeout | |
| CVE-2024-50130 | netfilter: bpf: must hold reference on net namespace | |
| CVE-2024-50134 | drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape with real VLA | |
| CVE-2024-50136 | net/mlx5: Unregister notifier on eswitch init failure | |
| CVE-2024-50135 | nvme-pci: fix race condition between reset and nvme_dev_disable() | |
| CVE-2024-50137 | reset: starfive: jh71x0: Fix accessing the empty member on JH7110 SoC | |
| CVE-2024-50138 | bpf: Use raw_spinlock_t in ringbuf | |
| CVE-2024-50132 | tracing/probes: Fix MAX_TRACE_ARGS limit handling | |
| CVE-2024-50125 | Bluetooth: SCO: Fix UAF on sco_sock_timeout | |
| CVE-2024-50123 | bpf: Add the missing BPF_LINK_TYPE invocation for sockmap | |
| CVE-2024-50127 | net: sched: fix use-after-free in taprio_change() | |
| CVE-2024-50121 | nfsd: cancel nfsd_shrinker_work using sync mode in nfs4_state_shutdown_net | |
| CVE-2024-50122 | PCI: Hold rescan lock while adding devices during host probe | |
| CVE-2024-50120 | smb: client: Handle kstrdup failures for passwords | |
| CVE-2024-50119 | cifs: fix warning when destroy 'cifs_io_request_pool' | |
| CVE-2024-50118 | btrfs: reject ro->rw reconfiguration if there are hard ro requirements | |
| CVE-2024-50117 | drm/amd: Guard against bad data for ATIF ACPI method | |
| CVE-2024-50116 | nilfs2: fix kernel bug due to missing clearing of buffer delay flag | |
| CVE-2024-50115 | KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory | |
| CVE-2024-50114 | KVM: arm64: Unregister redistributor for failed vCPU creation |
Showing top 20 of 50 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2024-50133
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