Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Reject MEM_ALLOC BTF accesses past object bounds BTF struct walks relax the struct-size check for accesses through a trailing flexible array. That is valid for ordinary BTF type walking, but PTR_TO_BTF_ID | MEM_ALLOC values point to objects allocated with the static BTF type size. When walking a MEM_ALLOC object, reject the access before applying the flexible-array relaxation if the access range extends past the struct size. Apply the same policy to struct ID matching so kfunc and kptr type checks do not walk past the allocated object bounds either.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/9c9ee0324c774490ae953162aaaf4561d222bd93
- https://git.kernel.org/stable/c/e626a50d07d43421cbf7bfb5a084b33a5e276b6e
FAQ
What is CVE-2026-93148?
CVE-2026-93148 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: bpf: Reject MEM_ALLOC BTF accesses past object bounds BTF struct walks relax the struct-size check for accesses through a trailing...
How severe is CVE-2026-93148?
CVE-2026-93148 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-93148?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.