CVE-2026-98390— x86/amd_node: Avoid divide by zero on virtualized systems
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
In the Linux kernel, the following vulnerability has been resolved: x86/amd_node: Avoid divide by zero on virtualized systems On a virtualized system, the number of nodes does not have a relationship to the number of roots. A Xen PVH dom0 can calculate roots_p
Affected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 0a4b61d9c2e496b5f0a10e29e355a1465c8738bb< 9273a90465d58b82aca4bea71451ef6bee084928 |
affected |
0a4b61d9c2e496b5f0a10e29e355a1465c8738bb< 94e984d8858a3228952b02f84e66610961098cc2 |
affected | ||
0a4b61d9c2e496b5f0a10e29e355a1465c8738bb< 72bd92bd8190d7869ecb462649ca40f297822a33 |
affected | ||
c4ad899a33198ab6335732c769835d035e66894a |
affected | ||
6.17.8< 6.18 |
affected | ||
6.18 |
affected | ||
< 6.18 |
unaffected | ||
6.18.53≤ 6.18.* |
unaffected | ||
| … +2 more rows | |||
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-98390
Vulnerability Information
Shenlong is analyzing...
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
x86/amd_node: Avoid divide by zero on virtualized systems
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
x86/amd_node: Avoid divide by zero on virtualized systems
On a virtualized system, the number of nodes does not have a relationship to
the number of roots. A Xen PVH dom0 can calculate roots_per_node as 0, which
crashes with a divide by zero in:
if (count++ % roots_per_node)
because the underlying topology code on Xen ends up making num_nodes
2 and num_roots 1 and the integer division result is 0.
The issue is seen with Xen, but it could affect other systems.
Set roots_per_node to 1 in this case. Print a firmware bug when this is
performed for non-virtualized systems.
[ bp: Massage commit message. ]
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
Affected Products
II. Public POCs for CVE-2026-98390
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-98390
请登录查看更多情报信息。
Other References for CVE-2026-98390 (3)
Same Patch Batch · Linux · 2026-10-14 · 46 CVEs total
| CVE-2026-98399 | s390/ipl: Fix NULL deref in dump_reipl without re-IPL parm block | |
| CVE-2026-98395 | powerpc/entry: Fix irq_soft_mask corruption on replayed interrupt exit | |
| CVE-2026-98394 | af_unix: Return immediately when manage_oob() returns NULL for 0-length buffer. | |
| CVE-2026-98391 | drm/xe: Guard page-fault worker with runtime PM check | |
| CVE-2026-98389 | drm/amdgpu: skip gfx switch_power_profile during GPU reset | |
| CVE-2026-98388 | exec: do_close_on_exec() before taking exec_update_lock | |
| CVE-2026-98387 | s390/crypto: Fix skcipher_walk return code handling in aes_s390 | |
| CVE-2026-98386 | scsi: qla2xxx: Use memset_io() to clear QLAFX00 request ring slot | |
| CVE-2026-98392 | Bluetooth: btintel_pcie: fix tx_handle bounds off-by-one | |
| CVE-2026-98398 | locking/lockdep: Invalidate stale class_cache entries for zapped classes | |
| CVE-2026-98397 | platform/x86: x86-android-tablets: hold device reference for secondary fwnode teardown | |
| CVE-2026-98400 | s390/ipl: Fix NULL deref in kdump without re-IPL parm block | |
| CVE-2026-98402 | net: icmp: avoid invalid transport header access in icmp_send tracepoint | |
| CVE-2026-98401 | net: iptunnel: fix stale transport header during tunnel decapsulation | |
| CVE-2026-98403 | s390/boot: Avoid IPL parameter append past command line | |
| CVE-2026-98404 | drm/virtio: Fix a NULL vs ERR_PTR() bug in virtio_gpu_user_framebuffer_create() | |
| CVE-2026-98405 | smb: client: fix missing iov bounds check in parse_posix_sids() | |
| CVE-2026-98406 | wifi: mac80211: avoid WARN in set_bitrate_mask when sdata not in driver | |
| CVE-2026-98408 | watchdog: rzv2h: Avoid division by zero | |
| CVE-2026-98407 | wifi: rsi: fix heap OOB write on key removal |
Showing top 20 of 46 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
-
CVE-2026-98431
RDMA/uverbs: Fix mmap_lock/disassociation_lock circular depe -
CVE-2026-98430
RDMA/efa: Keep admin queues alive while IRQ is registered -
CVE-2026-98429
RDMA/efa: Keep EQ resources alive while IRQ is registered -
CVE-2026-98427
net/sched: codel: bound the dropping loop per dequeue call -
CVE-2026-98428
ALSA: usb: 6fire: Avoid embedded URBs
Same vendor: Linux
-
CVE-2026-98431
RDMA/uverbs: Fix mmap_lock/disassociation_lock circular depe -
CVE-2026-98430
RDMA/efa: Keep admin queues alive while IRQ is registered -
CVE-2026-98429
RDMA/efa: Keep EQ resources alive while IRQ is registered -
CVE-2026-98427
net/sched: codel: bound the dropping loop per dequeue call -
CVE-2026-98428
ALSA: usb: 6fire: Avoid embedded URBs
V. Comments for CVE-2026-98390
No comments yet