net: hns3: fixed hclge_fetch_pf_reg accesses bar space out of bounds issue
CVE-2025-21650 · published 19 Jan 2025
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2025-21650?
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Who is affected
- Linux Linux: 939ccd107ffcade20c9c7055a2e7ae0fd724fb72 to < a85246635466752b9af72188e4a839541120d952, 939ccd107ffcade20c9c7055a2e7ae0fd724fb72 to < 0575baa733fc4219f230aef22d5bc35d922f1e9a, 939ccd107ffcade20c9c7055a2e7ae0fd724fb72 to < 7997ddd46c54408bcba5e37fe18b4d832e45d4d4, df34972a33d268a7113c119fe4e4b07a6819aa0c
- Linux Linux: 6.6
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
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- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
net: hns3: fixed hclge_fetch_pf_reg accesses bar space out of bounds issue
The TQP BAR space is divided into two segments. TQPs 0-1023 and TQPs
1024-1279 are in different BAR space addresses. However,
hclge_fetch_pf_reg does not distinguish the tqp space information when
reading the tqp space information. When the number of TQPs is greater
than 1024, access bar space overwriting occurs.
The problem of different segments has been considered during the
initialization of tqp.io_base. Therefore, tqp.io_base is directly used
when the queue is read in hclge_fetch_pf_reg.
The error message:
Unable to handle kernel paging request at virtual address ffff800037200000
pc : hclge_fetch_pf_reg+0x138/0x250 [hclge]
lr : hclge_get_regs+0x84/0x1d0 [hclge]
Call trace:
hclge_fetch_pf_reg+0x138/0x250 [hclge]
hclge_get_regs+0x84/0x1d0 [hclge]
hns3_get_regs+0x2c/0x50 [hns3]
ethtool_get_regs+0xf4/0x270
dev_ethtool+0x674/0x8a0
dev_ioctl+0x270/0x36c
sock_do_ioctl+0x110/0x2a0
sock_ioctl+0x2ac/0x530
__arm64_sys_ioctl+0xa8/0x100
invoke_syscall+0x4c/0x124
el0_svc_common.constprop.0+0x140/0x15c
do_el0_svc+0x30/0xd0
el0_svc+0x1c/0x2c
el0_sync_handler+0xb0/0xb4
el0_sync+0x168/0x180
Check your whole app
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References
- git.kernel.org/stable/c/a85246635466752b9af72188e4a839541120d952
- git.kernel.org/stable/c/0575baa733fc4219f230aef22d5bc35d922f1e9a
- git.kernel.org/stable/c/7997ddd46c54408bcba5e37fe18b4d832e45d4d4
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON