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CVE-2025-37924— ksmbd: fix use-after-free in kerberos authentication

CVSS 9.8 · Critical EPSS 0.27% · P50
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I. Basic Information for CVE-2025-37924

Vulnerability Information
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Vulnerability Title
ksmbd: fix use-after-free in kerberos authentication
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in kerberos authentication Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbd_free_user. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbd_free_user but before sess->user is set to NULL.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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ksmbd在Kerberos认证中未正确处理sess->user引用，可能导致释放后重用。
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)

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Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 0626e6641f6b467447c81dd7678a69c66f7746cf ~ e34a33d5d7e87399af0a138bb32f6a3e95dd83d2 -
LinuxLinux 5.15 -

II. Public POCs for CVE-2025-37924

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III. Intelligence Information for CVE-2025-37924

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

CVE-2025-37958mm/huge_memory: fix dereferencing invalid pmd migration entry
CVE-2025-37954smb: client: Avoid race in open_cached_dir with lease breaks
CVE-2025-37953sch_htb: make htb_deactivate() idempotent
CVE-2025-37949xenbus: Use kref to track req lifetime
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-2025-37950ocfs2: fix panic in failed foilio allocation
CVE-2025-37957KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception
CVE-2025-37956ksmbd: prevent rename with empty string
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
CVE-2025-37967usb: typec: ucsi: displayport: Fix deadlock
CVE-2025-37966riscv: Fix kernel crash due to PR_SET_TAGGED_ADDR_CTRL

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37924

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