CVE-2026-23068

NameCVE-2026-23068
DescriptionIn the Linux kernel, the following vulnerability has been resolved: spi: spi-sprd-adi: Fix double free in probe error path The driver currently uses spi_alloc_host() to allocate the controller but registers it using devm_spi_register_controller(). If devm_register_restart_handler() fails, the code jumps to the put_ctlr label and calls spi_controller_put(). However, since the controller was registered via a devm function, the device core will automatically call spi_controller_put() again when the probe fails. This results in a double-free of the spi_controller structure. Fix this by switching to devm_spi_alloc_host() and removing the manual spi_controller_put() call.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-4476-1, DSA-6126-1, DSA-6127-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)bullseye5.10.223-1vulnerable
bullseye (security)5.10.249-1vulnerable
bookworm6.1.159-1vulnerable
bookworm (security)6.1.162-1fixed
trixie6.12.63-1vulnerable
trixie (security)6.12.73-1fixed
forky, sid6.18.12-1fixed
linux-6.1 (PTS)bullseye (security)6.1.162-1~deb11u1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebookworm6.1.162-1DSA-6127-1
linuxsourcetrixie6.12.69-1DSA-6126-1
linuxsource(unstable)6.18.8-1
linux-6.1sourcebullseye6.1.162-1~deb11u1DLA-4476-1

Notes

https://git.kernel.org/linus/383d4f5cffcc8df930d95b06518a9d25a6d74aac (6.19-rc7)

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