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CVE-2025-37803— udmabuf: fix a buf size overflow issue during udmabuf creation

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于计算pglimit时未进行类型转换导致缓冲区大小溢出。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux fbb0de795078190a9834b3409e4b009cfb18a6d4< e84a08fc7e25cdad5d9a3def42cc770ff711193f affected
fbb0de795078190a9834b3409e4b009cfb18a6d4< 13fe12c037b470321436deec393030c6153cfeb9 affected
fbb0de795078190a9834b3409e4b009cfb18a6d4< 373512760e13fdaa726faa9502d0f5be2abb3d33 affected
fbb0de795078190a9834b3409e4b009cfb18a6d4< 3f6c9d66e0f8eb9679b57913aa64b4d2266f6fbe affected
fbb0de795078190a9834b3409e4b009cfb18a6d4< b2ff4e9c599b000833d16a917f519aa2e4a75de2 affected
fbb0de795078190a9834b3409e4b009cfb18a6d4< 29b65a3171a49c9b69f31035146be966cec40b7a affected
fbb0de795078190a9834b3409e4b009cfb18a6d4< 2b8419c6ecf69007dcff54ea0b9f0b215282c55a affected
fbb0de795078190a9834b3409e4b009cfb18a6d4< 021ba7f1babd029e714d13a6bf2571b08af96d0f affected
… +10 more rows
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I. Basic Information for CVE-2025-37803

Vulnerability Information
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Vulnerability Title
udmabuf: fix a buf size overflow issue during udmabuf creation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: udmabuf: fix a buf size overflow issue during udmabuf creation by casting size_limit_mb to u64 when calculate pglimit.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于计算pglimit时未进行类型转换导致缓冲区大小溢出。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux fbb0de795078190a9834b3409e4b009cfb18a6d4 ~ e84a08fc7e25cdad5d9a3def42cc770ff711193f -
Linux Linux 4.20 -

II. Public POCs for CVE-2025-37803

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III. Intelligence Information for CVE-2025-37803

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Same Patch Batch · Linux · 2025-05-08 · 33 CVEs total

CVE-2025-37801 7.8 HIGH spi: spi-imx: Add check for spi_imx_setupxfer()
CVE-2025-37822 7.8 HIGH riscv: uprobes: Add missing fence.i after building the XOL buffer
CVE-2025-37823 7.8 HIGH net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too
CVE-2025-37814 7.8 HIGH tty: Require CAP_SYS_ADMIN for all usages of TIOCL_SELMOUSEREPORT
CVE-2025-37813 7.8 HIGH usb: xhci: Fix invalid pointer dereference in Etron workaround
CVE-2025-37820 7.5 HIGH xen-netfront: handle NULL returned by xdp_convert_buff_to_frame()
CVE-2025-37802 7.5 HIGH ksmbd: fix WARNING "do not call blocking ops when !TASK_RUNNING"
CVE-2025-37800 7.1 HIGH driver core: fix potential NULL pointer dereference in dev_uevent()
CVE-2025-37830 cpufreq: scmi: Fix null-ptr-deref in scmi_cpufreq_get_rate()
CVE-2025-37829 cpufreq: scpi: Fix null-ptr-deref in scpi_cpufreq_get_rate()
CVE-2025-37828 scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()
CVE-2025-37826 scsi: ufs: core: Add NULL check in ufshcd_mcq_compl_pending_transfer()
CVE-2025-37827 btrfs: zoned: return EIO on RAID1 block group write pointer mismatch
CVE-2025-37831 cpufreq: apple-soc: Fix null-ptr-deref in apple_soc_cpufreq_get_rate()
CVE-2025-37834 mm/vmscan: don't try to reclaim hwpoison folio
CVE-2025-37825 nvmet: fix out-of-bounds access in nvmet_enable_port
CVE-2025-37824 tipc: fix NULL pointer dereference in tipc_mon_reinit_self()
CVE-2025-37821 sched/eevdf: Fix se->slice being set to U64_MAX and resulting crash
CVE-2025-37833 net/niu: Niu requires MSIX ENTRY_DATA fields touch before entry reads
CVE-2025-37819 irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()

Showing top 20 of 33 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37803

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