CVE-2022-50679— i40e: Fix DMA mappings leak
Possible ATT&CK Techniques 1AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | be1222b585fdc410b8c1dbcc57dd03a00f04eff5< ed5baf3d0a33caaca4cd4073ebb0854cc77a616d | affected |
be1222b585fdc410b8c1dbcc57dd03a00f04eff5< 94a171c982b8a8137a00721c1e62bc2713435bca | affected | ||
be1222b585fdc410b8c1dbcc57dd03a00f04eff5< 5f499596dfa3db9b3172645b6de9e1096a669c95 | affected | ||
be1222b585fdc410b8c1dbcc57dd03a00f04eff5< aae425efdfd1b1d8452260a3cb49344ebf20b1f5 | affected | ||
5.8 | affected | ||
< 5.8 | unaffected | ||
5.10.152≤ 5.10.* | unaffected | ||
5.15.76≤ 5.15.* | unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2022-50679
Vulnerability Information
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Vulnerability Title
i40e: Fix DMA mappings leak
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: i40e: Fix DMA mappings leak During reallocation of RX buffers, new DMA mappings are created for those buffers. steps for reproduction: while : do for ((i=0; i<=8160; i=i+32)) do ethtool -G enp130s0f0 rx $i tx $i sleep 0.5 ethtool -g enp130s0f0 done done This resulted in crash: i40e 0000:01:00.1: Unable to allocate memory for the Rx descriptor ring, size=65536 Driver BUG WARNING: CPU: 0 PID: 4300 at net/core/xdp.c:141 xdp_rxq_info_unreg+0x43/0x50 Call Trace: i40e_free_rx_resources+0x70/0x80 [i40e] i40e_set_ringparam+0x27c/0x800 [i40e] ethnl_set_rings+0x1b2/0x290 genl_family_rcv_msg_doit.isra.15+0x10f/0x150 genl_family_rcv_msg+0xb3/0x160 ? rings_fill_reply+0x1a0/0x1a0 genl_rcv_msg+0x47/0x90 ? genl_family_rcv_msg+0x160/0x160 netlink_rcv_skb+0x4c/0x120 genl_rcv+0x24/0x40 netlink_unicast+0x196/0x230 netlink_sendmsg+0x204/0x3d0 sock_sendmsg+0x4c/0x50 __sys_sendto+0xee/0x160 ? handle_mm_fault+0xbe/0x1e0 ? syscall_trace_enter+0x1d3/0x2c0 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x5b/0x1a0 entry_SYSCALL_64_after_hwframe+0x65/0xca RIP: 0033:0x7f5eac8b035b Missing register, driver bug WARNING: CPU: 0 PID: 4300 at net/core/xdp.c:119 xdp_rxq_info_unreg_mem_model+0x69/0x140 Call Trace: xdp_rxq_info_unreg+0x1e/0x50 i40e_free_rx_resources+0x70/0x80 [i40e] i40e_set_ringparam+0x27c/0x800 [i40e] ethnl_set_rings+0x1b2/0x290 genl_family_rcv_msg_doit.isra.15+0x10f/0x150 genl_family_rcv_msg+0xb3/0x160 ? rings_fill_reply+0x1a0/0x1a0 genl_rcv_msg+0x47/0x90 ? genl_family_rcv_msg+0x160/0x160 netlink_rcv_skb+0x4c/0x120 genl_rcv+0x24/0x40 netlink_unicast+0x196/0x230 netlink_sendmsg+0x204/0x3d0 sock_sendmsg+0x4c/0x50 __sys_sendto+0xee/0x160 ? handle_mm_fault+0xbe/0x1e0 ? syscall_trace_enter+0x1d3/0x2c0 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x5b/0x1a0 entry_SYSCALL_64_after_hwframe+0x65/0xca RIP: 0033:0x7f5eac8b035b This was caused because of new buffers with different RX ring count should substitute older ones, but those buffers were freed in i40e_configure_rx_ring and reallocated again with i40e_alloc_rx_bi, thus kfree on rx_bi caused leak of already mapped DMA. Fix this by reallocating ZC with rx_bi_zc struct when BPF program loads. Additionally reallocate back to rx_bi when BPF program unloads. If BPF program is loaded/unloaded and XSK pools are created, reallocate RX queues accordingly in XSP_SETUP_XSK_POOL handler.
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i40e中DMA映射泄漏，可能导致内存耗尽。
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-2022-50679
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2025-12-09 · 152 CVEs total
| CVE-2025-40343 | 9.8 CRITICAL | nvmet-fc: avoid scheduling association deletion twice |
| CVE-2023-53794 | 9.8 CRITICAL | cifs: fix session state check in reconnect to avoid use-after-free issue |
| CVE-2022-50666 | 9.8 CRITICAL | RDMA/siw: Fix QP destroy to wait for all references dropped. |
| CVE-2023-53827 | 8.8 HIGH | Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} |
| CVE-2023-53785 | 8.8 HIGH | mt76: mt7921: don't assume adequate headroom for SDIO headers |
| CVE-2023-53822 | 8.8 HIGH | wifi: ath11k: Ignore frags from uninitialized peer in dp. |
| CVE-2025-40336 | 8.8 HIGH | drm/gpusvm: fix hmm_pfn_to_map_order() usage |
| CVE-2025-40342 | 8.8 HIGH | nvme-fc: use lock accessing port_state and rport state |
| CVE-2025-40328 | 8.8 HIGH | smb: client: fix potential UAF in smb2_close_cached_fid() |
| CVE-2023-53851 | 8.4 HIGH | drm/msm/dp: Drop aux devices together with DP controller |
| CVE-2025-40337 | 8.2 HIGH | net: stmmac: Correctly handle Rx checksum offload errors |
| CVE-2022-50656 | 8.1 HIGH | nfc: pn533: Clear nfc_target before being used |
| CVE-2023-53803 | 8.1 HIGH | scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() |
| CVE-2023-53804 | 7.8 HIGH | nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode() |
| CVE-2023-53819 | 7.8 HIGH | amdgpu: validate offset_in_bo of drm_amdgpu_gem_va |
| CVE-2023-53816 | 7.8 HIGH | drm/amdkfd: fix potential kgd_mem UAFs |
| CVE-2023-53800 | 7.8 HIGH | ubi: Fix use-after-free when volume resizing failed |
| CVE-2023-53790 | 7.8 HIGH | bpf: Zeroing allocated object from slab in bpf memory allocator |
| CVE-2023-53795 | 7.8 HIGH | iommufd: IOMMUFD_DESTROY should not increase the refcount |
| CVE-2023-53810 | 7.8 HIGH | blk-mq: release crypto keyslot before reporting I/O complete |
Showing top 20 of 152 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-68446
drm/vmwgfx: Validate vmw_surface_metadata::array_size - CVE-2026-68445
drm/vc4: Prevent shader BO mappings from becoming writable - CVE-2026-68444
firmware: arm_ffa: Fix NULL dereference in ffa_partition_inf - CVE-2026-68443
hwmon: (gigabyte_waterforce) Stop device IO before calling h - CVE-2026-68442
btrfs: don't propagate EXTENT_FLAG_LOGGING to split extent m
Same vendor: Linux
- CVE-2026-68446
drm/vmwgfx: Validate vmw_surface_metadata::array_size - CVE-2026-68445
drm/vc4: Prevent shader BO mappings from becoming writable - CVE-2026-68444
firmware: arm_ffa: Fix NULL dereference in ffa_partition_inf - CVE-2026-68443
hwmon: (gigabyte_waterforce) Stop device IO before calling h - CVE-2026-68442
btrfs: don't propagate EXTENT_FLAG_LOGGING to split extent m
V. Comments for CVE-2022-50679
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