CVE-2026-31487spi: use generic driver_override infrastructure
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: spi: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1] Also note that we do not enable the driver_override feature of struct bus_type, as SPI - in contrast to most other buses - passes "" to sysfs_emit() when the driver_override pointer is NULL. Thus, printing "\n" instead of "(null)\n".
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 5039563e7c25eccd7fec1de6706011009d1c5665 builds before 6e8eb467bed6aa1a563dba8f366c9fd76ba0004e; from 5039563e7c25eccd7fec1de6706011009d1c5665 before eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0; from 5039563e7c25eccd7fec1de6706011009d1c5665 before c73a58661a760373d08a6883af4f0bb5cc991a67; from 5039563e7c25eccd7fec1de6706011009d1c5665 before e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0; from 5039563e7c25eccd7fec1de6706011009d1c5665 before cc34d77dd48708d810c12bfd6f5bf03304f6c824 | CNA record |
linux linux_kernel linux:linux_kernel | from 4.20.1 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11; 4.20; 7.0; 7.0; 7.0; 7.0; and 3 more ranges | NVD |
References
- https://git.kernel.org/stable/c/6e8eb467bed6aa1a563dba8f366c9fd76ba0004e
- https://git.kernel.org/stable/c/eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0patch
- https://git.kernel.org/stable/c/c73a58661a760373d08a6883af4f0bb5cc991a67patch
- https://git.kernel.org/stable/c/e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0patch
- https://git.kernel.org/stable/c/cc34d77dd48708d810c12bfd6f5bf03304f6c824patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.