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CVE-2025-37984— crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP()

EPSS 0.08% · P24
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I. Basic Information for CVE-2025-37984

Vulnerability Information
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Vulnerability Title
crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() Herbert notes that DIV_ROUND_UP() may overflow unnecessarily if an ecdsa implementation's ->key_size() callback returns an unusually large value. Herbert instead suggests (for a division by 8): X / 8 + !!(X & 7) Based on this formula, introduce a generic DIV_ROUND_UP_POW2() macro and use it in lieu of DIV_ROUND_UP() for ->key_size() return values. Additionally, use the macro in ecc_digits_from_bytes(), whose "nbytes" parameter is a ->key_size() return value in some instances, or a user-specified ASN.1 length in the case of ecdsa_get_signature_rs().
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DIV_ROUND_UP整数溢出，可能导致计算错误。
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 55779f26eab9af12474a447001bd17070f055712 ~ f02f0218be412cff1c844addf58e002071be298b -
LinuxLinux 6.10 -

II. Public POCs for CVE-2025-37984

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III. Intelligence Information for CVE-2025-37984

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Same Patch Batch · Linux · 2025-05-20 · 95 CVEs total

CVE-2025-379249.8 CRITICALksmbd: fix use-after-free in kerberos authentication
CVE-2025-37957KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception
CVE-2025-37955virtio-net: free xsk_buffs on error in virtnet_xsk_pool_enable()
CVE-2025-37952ksmbd: Fix UAF in __close_file_table_ids
CVE-2025-37948arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs
CVE-2025-37947ksmbd: prevent out-of-bounds stream writes by validating *pos
CVE-2025-37946s390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs
CVE-2025-37945net: phy: allow MDIO bus PM ops to start/stop state machine for phylink-controlled PHY
CVE-2025-37944wifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process
CVE-2025-37949xenbus: Use kref to track req lifetime
CVE-2025-37956ksmbd: prevent rename with empty string
CVE-2025-37954smb: client: Avoid race in open_cached_dir with lease breaks
CVE-2025-37958mm/huge_memory: fix dereferencing invalid pmd migration entry
CVE-2025-37960memblock: Accept allocated memory before use in memblock_double_array()
CVE-2025-37959bpf: Scrub packet on bpf_redirect_peer
CVE-2025-37961ipvs: fix uninit-value for saddr in do_output_route4
CVE-2025-37963arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users
CVE-2025-37962ksmbd: fix memory leak in parse_lease_state()
CVE-2025-37964x86/mm: Eliminate window where TLB flushes may be inadvertently skipped
CVE-2025-37965drm/amd/display: Fix invalid context error in dml helper

Showing top 20 of 95 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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