CVE-2025-38528
- Source
- https://cve.org/CVERecord?id=CVE-2025-38528
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38528.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-38528
- Downstream
- Related
- Published
- 2025-08-16T11:12:21.667Z
- Modified
- 2026-05-18T05:56:18.951246333Z
- Summary
- bpf: Reject %p% format string in bprintf-like helpers
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf: Reject %p% format string in bprintf-like helpers
static const char fmt[] = "%p%"; bpftraceprintk(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/0x5d0This happens because bpfbprintfprepare 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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38528.json" }- References
-
- https://git.kernel.org/stable/c/1c5f5fd47bbda17cb885fe6f03730702cd53d3f8
- https://git.kernel.org/stable/c/61d5fa45ed13e42af14c7e959baba9908b8ee6d4
- https://git.kernel.org/stable/c/6952aeace93f8c9ea01849efecac24dd3152c9c9
- https://git.kernel.org/stable/c/97303e541e12f1fea97834ec64b98991e8775f39
- https://git.kernel.org/stable/c/e7be679124bae8cf4fa6e40d7e1661baddfb3289
- https://git.kernel.org/stable/c/f8242745871f81a3ac37f9f51853d12854fd0b58
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38528.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-38528
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced48cac3f4a96ddf08df8e53809ed066de0dc93915Fixed97303e541e12f1fea97834ec64b98991e8775f39Fixed61d5fa45ed13e42af14c7e959baba9908b8ee6d4Fixede7be679124bae8cf4fa6e40d7e1661baddfb3289Fixed6952aeace93f8c9ea01849efecac24dd3152c9c9Fixed1c5f5fd47bbda17cb885fe6f03730702cd53d3f8Fixedf8242745871f81a3ac37f9f51853d12854fd0b58