VDB
DEBIAN-CVE-2025-38528
DEBIAN-CVE-2025-38528
PUBLISHED
CVSS 5.5 MEDIUM
In the Linux kernel, the following vulnerability has been resolved: bpf: Reject %p% format string in bprintf-like helpers static const char fmt[] = "%p%"; bpf_trace_printk(fmt, sizeof(fmt)); The above BPF program isn't rejected and causes a kernel warning at runtime: Please remove unsupported %\x00 in format string WARNING: CPU: 1 PID: 7244 at lib/vsprintf.c:2680 format_decode+0x49c/0x5d0 This happens because bpf_bprintf_prepare skips over the second %, detected as punctuation, while processing %p. This patch fixes it by not skipping over punctuation. %\x00 is then processed in the next iteration and rejected.
Risk Scores
CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | linux | 6.15-1~exp1, 6.15.3-1~exp1, 6.15.4-1~exp1 |
| Debian:11 | linux-6.1 | 6.1.148-1, 6.1.147-1, 6.1.140-1 |
| Debian:12 | linux | 6.1.38-2, 0, 6.1.106-2 |
| Debian:13 | linux | 6.12.38-1, 0, 6.12.38-1 |
Timeline
- Aug 16, 2025 CVE Published
- Apr 28, 2026 CVE Updated