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CVE-2026-46229— drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure

AI Predicted 4.3 Difficulty: Moderate EPSS 0.02% · P5

Possible ATT&CK Techniques 2AI

T1074 · Data Staged T1076

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinux6856e4b65f64eeb3f17148f79b36c1d60c627529< 1db431380879fd9d28b763a88a0c0431be5be8dfaffected
6856e4b65f64eeb3f17148f79b36c1d60c627529< 32b153658f017ad2f5bf8aab479e8d16ac95bc3aaffected
6856e4b65f64eeb3f17148f79b36c1d60c627529< 77d0b5d11387071770246fd0185a69fa28e8e109affected
6856e4b65f64eeb3f17148f79b36c1d60c627529< 047d44d8d29a6a1a5757256837aa9dd78e3cd0b5affected
6856e4b65f64eeb3f17148f79b36c1d60c627529< ad52d61d82181dbdb7f05826de38352d5e550cc2affected
5.4affected
< 5.4unaffected
6.6.140≤ 6.6.*unaffected
… +4 more rows
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I. Basic Information for CVE-2026-46229

Vulnerability Information
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Vulnerability Title
drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure KFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE but not AMDGPU_GEM_CREATE_VRAM_CLEARED, leaving freshly allocated VRAM with stale data from prior use observable by compute kernels. The GEM ioctl path already sets VRAM_CLEARED for all userspace allocations via amdgpu_gem_create_ioctl() and amdgpu_mode_dumb_create(). The KFD path was missing this flag, allowing stale page table remnants to leak into user buffers. This causes crashes in RCCL P2P transport where non-zero data in ptrExchange/head/tail fields corrupts the protocol handshake.
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KFD VRAM分配未设置AMDGPU_GEM_CREATE_VRAM_CLEARED标志，导致新分配的VRAM包含先前使用的陈旧数据，可能被计算内核观察到。
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 6856e4b65f64eeb3f17148f79b36c1d60c627529 ~ 1db431380879fd9d28b763a88a0c0431be5be8df -
LinuxLinux 5.4 -

II. Public POCs for CVE-2026-46229

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III. Intelligence Information for CVE-2026-46229

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Patches & Fixes for CVE-2026-46229 (5)

Same Patch Batch · Linux · 2026-05-28 · 138 CVEs total

CVE-2026-461359.8 CRITICALnvmet-tcp: fix race between ICReq handling and queue teardown
CVE-2026-461379.8 CRITICALmptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-461959.8 CRITICALsmb: client: validate dacloffset before building DACL pointers
CVE-2026-461159.8 CRITICALblock: add pgmap check to biovec_phys_mergeable
CVE-2026-461859.1 CRITICALsmb/client: fix out-of-bounds read in symlink_data()
CVE-2026-461199.1 CRITICALlibceph: Fix slab-out-of-bounds access in auth message processing
CVE-2026-461559.1 CRITICALsmb/client: fix out-of-bounds read in smb2_compound_op()
CVE-2026-461528.8 HIGHwifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-461988.8 HIGHbatman-adv: fix integer overflow on buff_pos
CVE-2026-461258.8 HIGHwifi: mac80211: remove station if connection prep fails
CVE-2026-462388.8 HIGHbatman-adv: stop caching unowned originator pointers in BAT IV
CVE-2026-461748.8 HIGHx86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-461138.8 HIGHKVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-461668.8 HIGHwifi: mac80211: use safe list iteration in radar detect work
CVE-2026-462128.8 HIGHbatman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-462328.1 HIGHHID: playstation: Clamp num_touch_reports
CVE-2026-461388.1 HIGHBluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
CVE-2026-462087.8 HIGHbatman-adv: stop tp_meter sessions during mesh teardown
CVE-2026-462157.8 HIGHdrm: Set old handle to NULL before prime swap in change_handle
CVE-2026-462097.8 HIGHdrm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs()

Showing top 20 of 138 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46229

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