bpf: reject BPF_PSEUDO_FUNC reference to the main program

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98075
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:36 UTC
Updated2026-09-25 11:17:36 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: bpf: reject BPF_PSEUDO_FUNC reference to the main program fixups.c:jit_subprogs() rewrites BPF_PSEUDO_FUNC loads to contain real function addresses. This function is invoked from bpf_jit_subprogs() only when env->subprog_cnt > 1. Meaning that for any program like below: int main(void *ctx) { void *ptr = main; ... bpf_timer_set_callback(..., ptr); ... } The 'ptr' won't be ever converted to contain an address. In combination with e.g. bpf_timer_set_callback() this would lead to a function call at a bogus address. Instead of complicating the implementation, just assume that no useful program needs main to be a sync or async callback and reject BPF_PSEUDO_FUNC loads for the main subprogram.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 69c087ba6225b574afb6e505b72cb75242a3d844 118212417ba0120d99f84154799f8880f07411f4 git Not specified
CNA Linux Linux affected 69c087ba6225b574afb6e505b72cb75242a3d844 d6c39774ae093c9f7009cc4ae918f18fc1af7ae7 git Not specified
CNA Linux Linux affected 69c087ba6225b574afb6e505b72cb75242a3d844 92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6 git Not specified
CNA Linux Linux affected 69c087ba6225b574afb6e505b72cb75242a3d844 374b2c5561db80fcdd7cdce44af37a49416f61c7 git Not specified
CNA Linux Linux affected 5.13 Not specified
CNA Linux Linux unaffected 5.13 semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d6c39774ae093c9f7009cc4ae918f18fc1af7ae7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/374b2c5561db80fcdd7cdce44af37a49416f61c7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/118212417ba0120d99f84154799f8880f07411f4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report