Answer in brief
CVE-2026-43199 records a High severity (CVSS 7.5) vulnerability in net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cee137a634318bfbda18ee5af45d300153b57fa5 <e1407fb7c337373dfaaae2445d828b0b9ae26a29 || >=cee137a634318bfbda18ee5af45d300153b57fa5 <57957bc7f1865778ec9b1618e15515feb6df7eb4 || >=cee137a634318bfbda18ee5af45d300153b57fa5 <546de94e41e92e1f7dc6213615fb7c794d05db98 || >=cee137a634318bfbda18ee5af45d300153b57fa5 <859380694f434597407632c29f30fdb5e763e6cc | e1407fb7c337373dfaaae2445d828b0b9ae26a29, 57957bc7f1865778ec9b1618e15515feb6df7eb4, 546de94e41e92e1f7dc6213615fb7c794d05db98, 859380694f434597407632c29f30fdb5e763e6cc |
| Linux/Linuxgeneric | 6.2 | Not reported |
| Linux/Linuxgeneric | >=cee137a634318bfbda18ee5af45d300153b57fa5 <5efde07521309274f26727860774614cbc187242 || >=cee137a634318bfbda18ee5af45d300153b57fa5 <e1407fb7c337373dfaaae2445d828b0b9ae26a29 || >=cee137a634318bfbda18ee5af45d300153b57fa5 <57957bc7f1865778ec9b1618e15515feb6df7eb4 || >=cee137a634318bfbda18ee5af45d300153b57fa5 <546de94e41e92e1f7dc6213615fb7c794d05db98 || >=cee137a634318bfbda18ee5af45d300153b57fa5 <859380694f434597407632c29f30fdb5e763e6cc | 5efde07521309274f26727860774614cbc187242, e1407fb7c337373dfaaae2445d828b0b9ae26a29, 57957bc7f1865778ec9b1618e15515feb6df7eb4, 546de94e41e92e1f7dc6213615fb7c794d05db98, 859380694f434597407632c29f30fdb5e763e6cc |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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
Quoted source text, attributed separately from HOL analysis.