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CVE-2025-37954— smb: client: Avoid race in open_cached_dir with lease breaks

CVSS 7.5 · High EPSS 0.30% · P22

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinux81ba10959970d15c388bf29866b01b62f387e6a3< 2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9affected
81ba10959970d15c388bf29866b01b62f387e6a3< 571dcf3d27b24800c171aea7b5e04ff06d10e2e9affected
81ba10959970d15c388bf29866b01b62f387e6a3< 2407265dc32bc8cc45b62a612c2a214ba9038e8baffected
81ba10959970d15c388bf29866b01b62f387e6a3< 3ca02e63edccb78ef3659bebc68579c7224a6ca2affected
436be190fbf81e5d84040dabf9cb7be06a94dc5daffected
6.5.10< 6.6affected
6.6affected
< 6.6unaffected
… +4 more rows
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I. Basic Information for CVE-2025-37954

Vulnerability Information
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Vulnerability Title
smb: client: Avoid race in open_cached_dir with lease breaks
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: Avoid race in open_cached_dir with lease breaks A pre-existing valid cfid returned from find_or_create_cached_dir might race with a lease break, meaning open_cached_dir doesn't consider it valid, and thinks it's newly-constructed. This leaks a dentry reference if the allocation occurs before the queued lease break work runs. Avoid the race by extending holding the cfid_list_lock across find_or_create_cached_dir and when the result is checked.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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smb客户端open_cached_dir与租约中断竞争。
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 81ba10959970d15c388bf29866b01b62f387e6a3 ~ 2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9 -
LinuxLinux 6.6 -

II. Public POCs for CVE-2025-37954

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III. Intelligence Information for CVE-2025-37954

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

CVE-2025-378949.8 CRITICALnet: use sock_gen_put() when sk_state is TCP_TIME_WAIT
CVE-2025-379249.8 CRITICALksmbd: fix use-after-free in kerberos authentication
CVE-2025-379359.8 CRITICALnet: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM
CVE-2025-379599.4 CRITICALbpf: Scrub packet on bpf_redirect_peer
CVE-2025-379268.8 HIGHksmbd: fix use-after-free in ksmbd_session_rpc_open
CVE-2025-378998.8 HIGHksmbd: fix use-after-free in session logoff
CVE-2025-379188.8 HIGHBluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()
CVE-2025-379438.8 HIGHwifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi
CVE-2025-379448.8 HIGHwifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process
CVE-2025-379478.8 HIGHksmbd: prevent out-of-bounds stream writes by validating *pos
CVE-2025-379528.8 HIGHksmbd: Fix UAF in __close_file_table_ids
CVE-2025-379568.8 HIGHksmbd: prevent rename with empty string
CVE-2025-379578.8 HIGHKVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception
CVE-2025-379368.7 HIGHperf/x86/intel: KVM: Mask PEBS_ENABLE loaded for guest with vCPU's value.
CVE-2025-379738.1 HIGHwifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation
CVE-2025-379017.8 HIGHirqchip/qcom-mpm: Prevent crash when trying to handle non-wake GPIOs
CVE-2025-379067.8 HIGHublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd
CVE-2025-379217.8 HIGHvxlan: vnifilter: Fix unlocked deletion of default FDB entry
CVE-2025-379237.8 HIGHtracing: Fix oob write in trace_seq_to_buffer()
CVE-2025-379037.8 HIGHdrm/amd/display: Fix slab-use-after-free in hdcp

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37954

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