CVE-2022-50679

MEDIUM
中文标题:
(暂无数据)
英文标题:
i40e: Fix DMA mappings leak
CVSS分数: -1.0
发布时间: 2025-12-09 01:29:32
漏洞类型: (暂无数据)
状态: PUBLISHED
数据质量分数: 0.30
数据版本: v2
漏洞描述
中文描述:

(暂无数据)

英文描述:

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.

CWE类型:
(暂无数据)
标签:
(暂无数据)
受影响产品
厂商 产品 版本 版本范围 平台 CPE
Linux Linux - < ed5baf3d0a33caaca4cd4073ebb0854cc77a616d - cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
Linux Linux 5.8 - - cpe:2.3:a:linux:linux:5.8:*:*:*:*:*:*:*
解决方案
中文解决方案:
(暂无数据)
英文解决方案:
(暂无数据)
临时解决方案:
(暂无数据)
参考链接
无标题 OTHER
cve.org
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cve.org
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无标题 OTHER
cve.org
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cve.org
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CVSS评分详情
-1.0
LOW
CVSS向量: NOT_EXTRACTED
CVSS版本: NOT_EXTRACTED
机密性
N/A
完整性
N/A
可用性
N/A
时间信息
发布时间:
2025-12-09 01:29:32
修改时间:
2025-12-09 01:29:32
创建时间:
2026-01-12 02:08:35
更新时间:
2026-01-12 02:26:44
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2022-50679 2025-12-09 02:14:37 2026-01-12 02:08:35
NVD nvd_CVE-2022-50679 2025-12-10 04:21:16 2026-01-12 02:26:44
版本与语言
当前版本: v2
主要语言: EN
支持语言:
EN
安全公告
暂无安全公告信息
变更历史
v2 NVD
2026-01-12 02:26:44
affected_products_count: 5 → 2; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 5 -> 2
  • data_sources: ['cve'] -> ['cve', 'nvd']