CVE-2026-43199— net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query
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I. Basic Information for CVE-2026-43199
Vulnerability Information
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Vulnerability Title
net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query Fix a "scheduling while atomic" bug in mlx5e_ipsec_init_macs() by replacing mlx5_query_mac_address() with ether_addr_copy() to get the local MAC address directly from netdev->dev_addr. The issue occurs because mlx5_query_mac_address() queries the hardware which involves mlx5_cmd_exec() that can sleep, but it is called from the mlx5e_ipsec_handle_event workqueue which runs in atomic context. The MAC address is already available in netdev->dev_addr, so no need to query hardware. This avoids the sleeping call and resolves the bug. Call trace: BUG: scheduling while atomic: kworker/u112:2/69344/0x00000200 __schedule+0x7ab/0xa20 schedule+0x1c/0xb0 schedule_timeout+0x6e/0xf0 __wait_for_common+0x91/0x1b0 cmd_exec+0xa85/0xff0 [mlx5_core] mlx5_cmd_exec+0x1f/0x50 [mlx5_core] mlx5_query_nic_vport_mac_address+0x7b/0xd0 [mlx5_core] mlx5_query_mac_address+0x19/0x30 [mlx5_core] mlx5e_ipsec_init_macs+0xc1/0x720 [mlx5_core] mlx5e_ipsec_build_accel_xfrm_attrs+0x422/0x670 [mlx5_core] mlx5e_ipsec_handle_event+0x2b9/0x460 [mlx5_core] process_one_work+0x178/0x2e0 worker_thread+0x2ea/0x430
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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net mlx5e中IPsec MAC地址查询在原子上下文中调用睡眠函数，可能导致调度错误。
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-2026-43199
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Same Patch Batch · Linux · 2026-05-06 · 225 CVEs total
| CVE-2026-43186 | 9.8 CRITICAL | ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data() |
| CVE-2026-43185 | 9.8 CRITICAL | ksmbd: fix signededness bug in smb_direct_prepare_negotiation() |
| CVE-2026-43208 | 9.8 CRITICAL | net: do not pass flow_id to set_rps_cpu() |
| CVE-2026-43198 | 9.8 CRITICAL | tcp: fix potential race in tcp_v6_syn_recv_sock() |
| CVE-2026-43125 | 9.8 CRITICAL | dlm: validate length in dlm_search_rsb_tree |
| CVE-2026-43114 | 9.4 CRITICAL | netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry |
| CVE-2026-43197 | 9.1 CRITICAL | netconsole: avoid OOB reads, msg is not nul-terminated |
| CVE-2026-43083 | 9.1 CRITICAL | net: ioam6: fix OOB and missing lock |
| CVE-2026-43117 | 9.1 CRITICAL | btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() |
| CVE-2026-43187 | 8.8 HIGH | xfs: delete attr leaf freemap entries when empty |
| CVE-2026-43283 | 8.8 HIGH | net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle |
| CVE-2026-43239 | 8.8 HIGH | smb: client: prevent races in ->query_interfaces() |
| CVE-2026-43215 | 8.8 HIGH | cifs: Fix locking usage for tcon fields |
| CVE-2026-43158 | 8.8 HIGH | xfs: fix freemap adjustments when adding xattrs to leaf blocks |
| CVE-2026-43232 | 8.8 HIGH | net: wan: farsync: Fix use-after-free bugs caused by unfinished tasklets |
| CVE-2026-43112 | 8.8 HIGH | fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath |
| CVE-2026-43113 | 8.8 HIGH | wifi: wl1251: validate packet IDs before indexing tx_frames |
| CVE-2026-43110 | 8.8 HIGH | wifi: brcmfmac: validate bsscfg indices in IF events |
| CVE-2026-43172 | 8.8 HIGH | wifi: iwlwifi: fix 22000 series SMEM parsing |
| CVE-2026-43176 | 8.8 HIGH | wifi: rtw89: pci: validate release report content before using for RTL8922DE |
Showing top 20 of 225 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2026-43199
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