CVE-2024-57878— arm64: ptrace: fix partial SETREGSET for NT_ARM_FPMR
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2024-57878
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
arm64: ptrace: fix partial SETREGSET for NT_ARM_FPMR
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: arm64: ptrace: fix partial SETREGSET for NT_ARM_FPMR Currently fpmr_set() doesn't initialize the temporary 'fpmr' variable, and a SETREGSET call with a length of zero will leave this uninitialized. Consequently an arbitrary value will be written back to target->thread.uw.fpmr, potentially leaking up to 64 bits of memory from the kernel stack. The read is limited to a specific slot on the stack, and the issue does not provide a write mechanism. Fix this by initializing the temporary value before copying the regset from userspace, as for other regsets (e.g. NT_PRSTATUS, NT_PRFPREG, NT_ARM_SYSTEM_CALL). In the case of a zero-length write, the existing contents of FPMR will be retained. Before this patch: | # ./fpmr-test | Attempting to write NT_ARM_FPMR::fpmr = 0x900d900d900d900d | SETREGSET(nt=0x40e, len=8) wrote 8 bytes | | Attempting to read NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0x900d900d900d900d | | Attempting to write NT_ARM_FPMR (zero length) | SETREGSET(nt=0x40e, len=0) wrote 0 bytes | | Attempting to read NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0xffff800083963d50 After this patch: | # ./fpmr-test | Attempting to write NT_ARM_FPMR::fpmr = 0x900d900d900d900d | SETREGSET(nt=0x40e, len=8) wrote 8 bytes | | Attempting to read NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0x900d900d900d900d | | Attempting to write NT_ARM_FPMR (zero length) | SETREGSET(nt=0x40e, len=0) wrote 0 bytes | | Attempting to read NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0x900d900d900d900d
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ARM64架构的ptrace在处理NT_ARM_FPMR时，未初始化临时变量fpmr，可能导致内核栈内存泄漏。
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-2024-57878
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2024-57878
请登录查看更多情报信息。
Same Patch Batch · Linux · 2025-01-11 · 67 CVEs total
| CVE-2024-57792 | power: supply: gpio-charger: Fix set charge current limits | |
| CVE-2024-57877 | arm64: ptrace: fix partial SETREGSET for NT_ARM_POE | |
| CVE-2024-57876 | drm/dp_mst: Fix resetting msg rx state after topology removal | |
| CVE-2024-57875 | block: RCU protect disk->conv_zones_bitmap | |
| CVE-2024-57805 | ASoC: SOF: Intel: hda-dai: Do not release the link DMA on STOP | |
| CVE-2024-57804 | scsi: mpi3mr: Fix corrupt config pages PHY state is switched in sysfs | |
| CVE-2024-57800 | ALSA: memalloc: prefer dma_mapping_error() over explicit address checking | |
| CVE-2024-57799 | phy: rockchip: samsung-hdptx: Set drvdata before enabling runtime PM | |
| CVE-2024-57798 | drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req() | |
| CVE-2024-57793 | virt: tdx-guest: Just leak decrypted memory on unrecoverable errors | |
| CVE-2024-57806 | btrfs: fix transaction atomicity bug when enabling simple quotas | |
| CVE-2024-57791 | net/smc: check return value of sock_recvmsg when draining clc data | |
| CVE-2024-56788 | net: ethernet: oa_tc6: fix tx skb race condition between reference pointers | |
| CVE-2024-56372 | net: tun: fix tun_napi_alloc_frags() | |
| CVE-2024-56369 | drm/modes: Avoid divide by zero harder in drm_mode_vrefresh() | |
| CVE-2024-56368 | ring-buffer: Fix overflow in __rb_map_vma | |
| CVE-2024-55916 | Drivers: hv: util: Avoid accessing a ringbuffer not initialized yet | |
| CVE-2024-55881 | KVM: x86: Play nice with protected guests in complete_hypercall_exit() | |
| CVE-2024-54193 | accel/ivpu: Fix WARN in ivpu_ipc_send_receive_internal() | |
| CVE-2024-54455 | accel/ivpu: Fix general protection fault in ivpu_bo_list() |
Showing top 20 of 67 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-2024-57878
No comments yet