CVE-2026-90386
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
i3c: dw: avoid shift-out-of-bounds when DAA assigns no devices
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef | affected | git | 5650b013e6bfc14c8b30be727f4a715b01860a08 | Unavailable | None listed |
| 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef | affected | git | 63110ccc434e10d9e9d2c7d82ebfa8a6f9cedd94 | Unavailable | None listed |
| 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef | affected | git | 3a1c35739efb69e8ec2a868113a0471a01bb8f29 | Unavailable | None listed |
| 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef | affected | git | 111f559e5b6461f5f6977275716e6c5d1eb7ea27 | Unavailable | None listed |
| 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef | affected | git | 754533e6169d1f10bdef7a6ba9bd7740b524e1d4 | Unavailable | None listed |
| 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef | affected | git | 9eaac0cb4ca94e2e32c53c156ae5b813ba7ef90c | Unavailable | None listed |
| 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef | affected | git | 618dd640ded6b94bbdb79c798a901ec564797033 | Unavailable | None listed |
| 1dd728f5d4d4b8b53196c1e0fcf86bbaaee39cef | affected | git | 038cf48b3170af26a70bf2dee4f8c3ac910f5176 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.0 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.110 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.52 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.6 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |