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CVE-2025-40277— drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE

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drm vmwgfx未验证命令头大小，可能导致缓冲区溢出。

CVSS 7.8 · High EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8ce75f8ab9044fe11caaaf2b2c82471023212f9f< e58559845021c3bad5e094219378b869157fad53 affected
8ce75f8ab9044fe11caaaf2b2c82471023212f9f< 54d458b244893e47bda52ec3943fdfbc8d7d068b affected
8ce75f8ab9044fe11caaaf2b2c82471023212f9f< 709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173 affected
8ce75f8ab9044fe11caaaf2b2c82471023212f9f< a3abb54c27b2c393c44362399777ad2f6e1ff17e affected
8ce75f8ab9044fe11caaaf2b2c82471023212f9f< b5df9e06eed3df6a4f5c6f8453013b0cabb927b4 affected
8ce75f8ab9044fe11caaaf2b2c82471023212f9f< 5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc affected
8ce75f8ab9044fe11caaaf2b2c82471023212f9f< f3f3a8eb3f0ba799fae057091d8c67cca12d6fa0 affected
8ce75f8ab9044fe11caaaf2b2c82471023212f9f< 32b415a9dc2c212e809b7ebc2b14bc3fbda2b9af affected
… +10 more rows
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I. Basic Information for CVE-2025-40277

Vulnerability Information
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Vulnerability Title
drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE This data originates from userspace and is used in buffer offset calculations which could potentially overflow causing an out-of-bounds access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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drm vmwgfx未验证命令头大小，可能导致缓冲区溢出。
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 8ce75f8ab9044fe11caaaf2b2c82471023212f9f ~ e58559845021c3bad5e094219378b869157fad53 -
Linux Linux 4.3 -

II. Public POCs for CVE-2025-40277

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III. Intelligence Information for CVE-2025-40277

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Same Patch Batch · Linux · 2025-12-06 · 23 CVEs total

CVE-2025-40282 8.8 HIGH Bluetooth: 6lowpan: reset link-local header on ipv6 recv path
CVE-2025-40273 8.8 HIGH NFSD: free copynotify stateid in nfs4_free_ol_stateid()
CVE-2025-40269 7.8 HIGH ALSA: usb-audio: Fix potential overflow of PCM transfer buffer
CVE-2025-40284 7.8 HIGH Bluetooth: MGMT: cancel mesh send timer when hdev removed
CVE-2025-40283 7.8 HIGH Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF
CVE-2025-40270 7.8 HIGH mm, swap: fix potential UAF issue for VMA readahead
CVE-2025-40280 7.8 HIGH tipc: Fix use-after-free in tipc_mon_reinit_self().
CVE-2025-40271 7.8 HIGH fs/proc: fix uaf in proc_readdir_de()
CVE-2025-40272 7.8 HIGH mm/secretmem: fix use-after-free race in fault handler
CVE-2025-40274 7.8 HIGH KVM: guest_memfd: Remove bindings on memslot deletion when gmem is dying
CVE-2025-40285 7.5 HIGH smb/server: fix possible refcount leak in smb2_sess_setup()
CVE-2025-40276 7.3 HIGH drm/panthor: Flush shmem writes before mapping buffers CPU-uncached
CVE-2025-40278 net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak
CVE-2025-40267 io_uring/rw: ensure allocated iovec gets cleared for early failure
CVE-2025-40268 cifs: client: fix memory leak in smb3_fs_context_parse_param
CVE-2025-40275 ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd
CVE-2025-40289 drm/amdgpu: hide VRAM sysfs attributes on GPUs without VRAM
CVE-2025-40279 net: sched: act_connmark: initialize struct tc_ife to fix kernel leak
CVE-2025-40281 sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto
CVE-2025-40286 smb/server: fix possible memory leak in smb2_read()

Showing top 20 of 23 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40277

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