Description

In the Linux kernel, the following vulnerability has been resolved:

objtool, nvmet: Fix out-of-bounds stack access in nvmet_ctrl_state_show()

The csts_state_names[] array only has six sparse entries, but the
iteration code in nvmet_ctrl_state_show() iterates seven, resulting in a
potential out-of-bounds stack read. Fix that.

Fixes the following warning with an UBSAN kernel:

vmlinux.o: warning: objtool: .text.nvmet_ctrl_state_show: unexpected end of section

Classification

CVE ID: CVE-2025-39778

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 2.92% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-39778
https://git.kernel.org/stable/c/1adc93a525fdee8e2b311e6d5fd93eb69714ca05
https://git.kernel.org/stable/c/8fbf37a3577b4d64c150cafde338eee17b2f2ea4
https://git.kernel.org/stable/c/0cc0efc58d6c741b2868d4af24874d7fec28a575
https://git.kernel.org/stable/c/107a23185d990e3df6638d9a84c835f963fe30a6

Timeline