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CVE-2025-38669— Revert "drm/gem-shmem: Use dma_buf from GEM object instance"

EPSS 0.03% · P7
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I. Basic Information for CVE-2025-38669

Vulnerability Information
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Vulnerability Title
Revert "drm/gem-shmem: Use dma_buf from GEM object instance"
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Revert "drm/gem-shmem: Use dma_buf from GEM object instance" This reverts commit 1a148af06000e545e714fe3210af3d77ff903c11. The dma_buf field in struct drm_gem_object is not stable over the object instance's lifetime. The field becomes NULL when user space releases the final GEM handle on the buffer object. This resulted in a NULL-pointer deref. Workarounds in commit 5307dce878d4 ("drm/gem: Acquire references on GEM handles for framebuffers") and commit f6bfc9afc751 ("drm/framebuffer: Acquire internal references on GEM handles") only solved the problem partially. They especially don't work for buffer objects without a DRM framebuffer associated. Hence, this revert to going back to using .import_attach->dmabuf. v3: - cc stable
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dma_buf字段不稳定，可能导致空指针取消引用。
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)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 1a148af06000e545e714fe3210af3d77ff903c11 ~ 291a77604858a8b47cf6640a12b76e97f99e00ed -
LinuxLinux 6.15 -

II. Public POCs for CVE-2025-38669

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III. Intelligence Information for CVE-2025-38669

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Same Patch Batch · Linux · 2025-08-22 · 60 CVEs total

CVE-2025-38634power: supply: cpcap-charger: Fix null check for power_supply_get_by_name
CVE-2025-38616tls: handle data disappearing from under the TLS ULP
CVE-2025-38620zloop: fix KASAN use-after-free of tag set
CVE-2025-38619media: ti: j721e-csi2rx: fix list_del corruption
CVE-2025-38621md: make rdev_addable usable for rcu mode
CVE-2025-38618vsock: Do not allow binding to VMADDR_PORT_ANY
CVE-2025-38630fbdev: imxfb: Check fb_add_videomode to prevent null-ptr-deref
CVE-2025-38632pinmux: fix race causing mux_owner NULL with active mux_usecount
CVE-2025-38631clk: imx95-blk-ctl: Fix synchronous abort
CVE-2025-38633clk: spacemit: mark K1 pll1_d8 as critical
CVE-2025-38629ALSA: usb: scarlett2: Fix missing NULL check
CVE-2025-38635clk: davinci: Add NULL check in davinci_lpsc_clk_register()
CVE-2025-38636rv: Use strings in da monitors tracepoints
CVE-2025-38638ipv6: add a retry logic in net6_rt_notify()
CVE-2025-38639netfilter: xt_nfacct: don't assume acct name is null-terminated
CVE-2025-38640bpf: Disable migration in nf_hook_run_bpf().
CVE-2025-38641Bluetooth: btusb: Fix potential NULL dereference on kmalloc failure
CVE-2025-38642wifi: mac80211: fix WARN_ON for monitor mode on some devices
CVE-2025-38643wifi: cfg80211: Add missing lock in cfg80211_check_and_end_cac()
CVE-2025-38644wifi: mac80211: reject TDLS operations when station is not associated

Showing top 20 of 60 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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