Description

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

uprobes/x86: Harden uretprobe syscall trampoline check

Jann reported a possible issue when trampoline_check_ip returns
address near the bottom of the address space that is allowed to
call into the syscall if uretprobes are not set up:

https://lore.kernel.org/bpf/202502081235.5A6F352985@keescook/T/#m9d416df341b8fbc11737dacbcd29f0054413cbbf

Though the mmap minimum address restrictions will typically prevent
creating mappings there, let's make sure uretprobe syscall checks
for that.

Classification

CVE ID: CVE-2025-22046

Affected Products

Vendor: Linux

Product: Linux, Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 2.91% (scored less or equal to compared to others)

EPSS Date: 2025-04-20 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-22046
https://git.kernel.org/stable/c/c35771342e47d58ab9433f3be1c3c30f2c5fa4f3
https://git.kernel.org/stable/c/b0065d712049c87e1994c6eac00c6a637e39b325
https://git.kernel.org/stable/c/d4e48b8d59fe162938a5004ace698c847e6a3207
https://git.kernel.org/stable/c/fa6192adc32f4fdfe5b74edd5b210e12afd6ecc0

Timeline