Answer in brief
CVE-2025-38528 records a High severity (CVSS 7.1) vulnerability in bpf: Reject %p% format string in bprintf-like helpers. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=48cac3f4a96ddf08df8e53809ed066de0dc93915 <97303e541e12f1fea97834ec64b98991e8775f39 || >=48cac3f4a96ddf08df8e53809ed066de0dc93915 <61d5fa45ed13e42af14c7e959baba9908b8ee6d4 || >=48cac3f4a96ddf08df8e53809ed066de0dc93915 <e7be679124bae8cf4fa6e40d7e1661baddfb3289 || >=48cac3f4a96ddf08df8e53809ed066de0dc93915 <6952aeace93f8c9ea01849efecac24dd3152c9c9 || >=48cac3f4a96ddf08df8e53809ed066de0dc93915 <1c5f5fd47bbda17cb885fe6f03730702cd53d3f8 || >=48cac3f4a96ddf08df8e53809ed066de0dc93915 <f8242745871f81a3ac37f9f51853d12854fd0b58 | 97303e541e12f1fea97834ec64b98991e8775f39, 61d5fa45ed13e42af14c7e959baba9908b8ee6d4, e7be679124bae8cf4fa6e40d7e1661baddfb3289, 6952aeace93f8c9ea01849efecac24dd3152c9c9, 1c5f5fd47bbda17cb885fe6f03730702cd53d3f8, f8242745871f81a3ac37f9f51853d12854fd0b58 |
| Linux/Linuxgeneric | 5.13 | Not reported |
Published upstream
Aug 16, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.