CVE-2026-43399— drm/amdgpu/userq: Fix reference leak in amdgpu_userq_wait_ioctl
Possible ATT&CK Techniques 1AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | a292fdecd72834b3bec380baa5db1e69e7f70679< 762f47e2b824383d5be65eee2c40a1269b7d50c8 | affected |
a292fdecd72834b3bec380baa5db1e69e7f70679< 5409247d41f372bec5b141ef599f2d9f5e81b746 | affected | ||
a292fdecd72834b3bec380baa5db1e69e7f70679< 49abfa812617a7f2d0132c70d23ac98b389c6ec1 | affected | ||
6.16 | affected | ||
< 6.16 | unaffected | ||
6.18.19≤ 6.18.* | unaffected | ||
6.19.9≤ 6.19.* | unaffected | ||
7.0≤ * | unaffected |
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I. Basic Information for CVE-2026-43399
Vulnerability Information
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Vulnerability Title
drm/amdgpu/userq: Fix reference leak in amdgpu_userq_wait_ioctl
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: Fix reference leak in amdgpu_userq_wait_ioctl Drop reference to syncobj and timeline fence when aborting the ioctl due output array being too small. (cherry picked from commit 68951e9c3e6bb22396bc42ef2359751c8315dd27)
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amdgpu_userq_wait_ioctl中在输出数组过小时未释放syncobj和timeline fence引用，可能导致引用泄漏。
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
II. Public POCs for CVE-2026-43399
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-43399 (3)
Same Patch Batch · Linux · 2026-05-08 · 197 CVEs total
| CVE-2026-43384 | 9.8 CRITICAL | net/tcp-ao: Fix MAC comparison to be constant-time |
| CVE-2026-43304 | 9.8 CRITICAL | libceph: define and enforce CEPH_MAX_KEY_LEN |
| CVE-2026-43414 | 9.8 CRITICAL | scsi: qla2xxx: Completely fix fcport double free |
| CVE-2026-43341 | 9.8 CRITICAL | net/ipv6: ioam6: prevent schema length wraparound in trace fill |
| CVE-2026-43379 | 9.8 CRITICAL | ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close() |
| CVE-2026-43465 | 9.8 CRITICAL | net/mlx5e: RX, Fix XDP multi-buf frag counting for striding RQ |
| CVE-2026-43376 | 9.8 CRITICAL | ksmbd: fix use-after-free by using call_rcu() for oplock_info |
| CVE-2026-43402 | 9.8 CRITICAL | kthread: consolidate kthread exit paths to prevent use-after-free |
| CVE-2026-43378 | 9.8 CRITICAL | smb: server: fix use-after-free in smb2_open() |
| CVE-2026-43383 | 9.4 CRITICAL | net/tcp-md5: Fix MAC comparison to be constant-time |
| CVE-2026-43407 | 9.1 CRITICAL | libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply() |
| CVE-2026-43406 | 9.1 CRITICAL | libceph: prevent potential out-of-bounds reads in process_message_header() |
| CVE-2026-43334 | 8.8 HIGH | Bluetooth: SMP: force responder MITM requirements before building the pairing response |
| CVE-2026-43403 | 8.8 HIGH | nsfs: tighten permission checks for ns iteration ioctls |
| CVE-2026-43322 | 8.8 HIGH | Bluetooth: hci_sync: Fix UAF in le_read_features_complete |
| CVE-2026-43391 | 8.8 HIGH | nsfs: tighten permission checks for handle opening |
| CVE-2026-43284 | 8.8 HIGH | xfrm: esp: avoid in-place decrypt on shared skb frags |
| CVE-2026-43291 | 8.3 HIGH | net: nfc: nci: Fix parameter validation for packet data |
| CVE-2026-43365 | 8.2 HIGH | xfs: fix undersized l_iclog_roundoff values |
| CVE-2026-43466 | 8.2 HIGH | net/mlx5e: Fix DMA FIFO desync on error CQE SQ recovery |
Showing top 20 of 197 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53277
KVM: arm64: Take the SRCU lock for page table walks in fault - CVE-2026-53276
Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer - CVE-2026-53275
ipv6: mcast: Fix use-after-free when processing MLD queries - CVE-2026-53274
net/smc: fix sleep-inside-lock in __smc_setsockopt() causing - CVE-2026-53273
tee: optee: prevent use-after-free when the client exits bef
Same vendor: Linux
- CVE-2026-53277
KVM: arm64: Take the SRCU lock for page table walks in fault - CVE-2026-53276
Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer - CVE-2026-53275
ipv6: mcast: Fix use-after-free when processing MLD queries - CVE-2026-53274
net/smc: fix sleep-inside-lock in __smc_setsockopt() causing - CVE-2026-53273
tee: optee: prevent use-after-free when the client exits bef
V. Comments for CVE-2026-43399
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