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CVE-2025-40126— sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC

EPSS 0.08% · P23
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I. Basic Information for CVE-2025-40126

Vulnerability Information
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Vulnerability Title
sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC The referenced commit introduced exception handlers on user-space memory references in copy_from_user and copy_to_user. These handlers return from the respective function and calculate the remaining bytes left to copy using the current register contents. This commit fixes a couple of bad calculations. This will fix the return value of copy_from_user and copy_to_user in the faulting case. The behaviour of memcpy stays unchanged.
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，该漏洞源于异常处理计算错误，可能导致内存访问错误。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada ~ 0bf3dc3a2156f1c5ddaba4b85d09767874634114 -
LinuxLinux 4.9 -

II. Public POCs for CVE-2025-40126

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III. Intelligence Information for CVE-2025-40126

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Same Patch Batch · Linux · 2025-11-12 · 96 CVEs total

CVE-2025-40176tls: wait for pending async decryptions if tls_strp_msg_hold fails
CVE-2025-40172accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages()
CVE-2025-40169bpf: Reject negative offsets for ALU ops
CVE-2025-40166drm/xe/guc: Check GuC running state before deregistering exec queue
CVE-2025-40167ext4: detect invalid INLINE_DATA + EXTENTS flag combination
CVE-2025-40164usbnet: Fix using smp_processor_id() in preemptible code warnings
CVE-2025-40162ASoC: amd/sdw_utils: avoid NULL deref when devm_kasprintf() fails
CVE-2025-40163sched/deadline: Stop dl_server before CPU goes offline
CVE-2025-40165media: nxp: imx8-isi: m2m: Fix streaming cleanup on release
CVE-2025-40175idpf: cleanup remaining SKBs in PTP flows
CVE-2025-40174x86/mm: Fix SMP ordering in switch_mm_irqs_off()
CVE-2025-40173net/ip6_tunnel: Prevent perpetual tunnel growth
CVE-2025-40177accel/qaic: Fix bootlog initialization ordering
CVE-2025-40178pid: Add a judgment for ns null in pid_nr_ns
CVE-2025-40179ext4: verify orphan file size is not too big
CVE-2025-40180mailbox: zynqmp-ipi: Fix out-of-bounds access in mailbox cleanup loop
CVE-2025-40181x86/kvm: Force legacy PCI hole to UC when overriding MTRRs for TDX/SNP
CVE-2025-40183bpf: Fix metadata_dst leak __bpf_redirect_neigh_v{4,6}
CVE-2025-40182crypto: skcipher - Fix reqsize handling
CVE-2025-40184KVM: arm64: Fix debug checking for np-guests using huge mappings

Showing top 20 of 96 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40126

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