CVE-2026-90386: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-90386DEBIAN-CVE-2026-90386
Published 17-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-90386 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.7% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.22%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:11893-1USN-8800-1

Timeline

  1. 17-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: i3c: dw: avoid shift-out-of-bounds when DAA assigns no devices On an empty bus ENTDAA assigns nothing, so cmd->rx_len (the count of addresses left unassigned) equals master->maxdevs. The GENMASK() index master->maxdevs - cmd->rx_len - 1 then becomes -1, which trips up UBSAN. This happens every time on boot on a Gigabyte/AMD server: UBSAN: shift-out-of-bounds in drivers/i3c/master/dw-i3c-master.c:905:12 shift exponent 64 is too large for 64-bit type 'long unsigned int' CPU: 7 UID: 0 PID: 963 Comm: (udev-worker) Not tainted 7.0.11-200.fc44.x86_64 #1 PREEMPT(lazy) Hardware name: Giga Computing E163-Z34-AAH1-000/MZ33-DC1-000, BIOS R32_F45 04/01/2026 Call Trace: <TASK> dump_stack_lvl+0x5d/0x80 ubsan_epilogue+0x5/0x2b __ubsan_handle_shift_out_of_bounds.cold+0xd7/0x1ab dw_i3c_master_daa.cold+0x1b/0x96 [dw_i3c_master] i3c_master_do_daa_ext.part.0+0x3e/0xf0 [i3c] Skip the mask when no new device was assigned.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

+0.01 pp

From 0.21% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu165 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef, < 5650b013e6bfc14c8b30be727f4a715b01860a08 | ≥ 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef, < 63110ccc434e10d9e9d2c7d82ebfa8a6f9cedd94 | ≥ 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef, < 3a1c35739efb69e8ec2a868113a0471a01bb8f29 | ≥ 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef, < 111f559e5b6461f5f6977275716e6c5d1eb7ea27 | ≥ 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef, < 754533e6169d1f10bdef7a6ba9bd7740b524e1d4 | ≥ 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef, < 9eaac0cb4ca94e2e32c53c156ae5b813ba7ef90c | ≥ 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef, < 618dd640ded6b94bbdb79c798a901ec564797033 | ≥ 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef, < 038cf48b3170af26a70bf2dee4f8c3ac910f5176 | 5.0

3 vendors · 168 products

References

14 links
Show all 14 references