bpf: Fix regsafe() for pointers to packet

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Summary

CVECVE-2026-43030
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-01 15:16:47 UTC
Updated2026-07-14 13:18:52 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: bpf: Fix regsafe() for pointers to packet In case rold->reg->range == BEYOND_PKT_END && rcur->reg->range == N regsafe() may return true which may lead to current state with valid packet range not being explored. Fix the bug.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000120000 probability, percentile 0.017620000 (date 2026-05-05)

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 95b6ec733752b31bfd166c4609d2c1b5cdde9b47 b52f6d0ef7b308f9d05bbddb78749852f28e8e40 git Not specified
CNA Linux Linux affected 6d94e741a8ff818e5518da8257f5ca0aaed1f269 37db6b9726d0bcf91cbdf9d63b558c50da49f968 git Not specified
CNA Linux Linux affected 6d94e741a8ff818e5518da8257f5ca0aaed1f269 015a74476dc1ab6923d89f1ee009aaf43faa7185 git Not specified
CNA Linux Linux affected 6d94e741a8ff818e5518da8257f5ca0aaed1f269 b99d82706bd1511bb875e3de7154698fd9215c99 git Not specified
CNA Linux Linux affected 6d94e741a8ff818e5518da8257f5ca0aaed1f269 7241da033fdc507b920e092dab1f97b945cb0370 git Not specified
CNA Linux Linux affected 6d94e741a8ff818e5518da8257f5ca0aaed1f269 8aebe18069394f4a79d2d82080a0f806da449996 git Not specified
CNA Linux Linux affected 6d94e741a8ff818e5518da8257f5ca0aaed1f269 ca995b1462ec6db1e869100ba1fb7356bd3f22f0 git Not specified
CNA Linux Linux affected 6d94e741a8ff818e5518da8257f5ca0aaed1f269 a8502a79e832b861e99218cbd2d8f4312d62e225 git Not specified
CNA Linux Linux affected 5.10.155 5.10.253 semver Not specified
CNA Linux Linux affected 5.11 Not specified
CNA Linux Linux unaffected 5.11 semver Not specified
CNA Linux Linux unaffected 5.10.253 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.203 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.168 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.134 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.81 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.22 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.12 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/37db6b9726d0bcf91cbdf9d63b558c50da49f968 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-082556.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/b99d82706bd1511bb875e3de7154698fd9215c99 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a8502a79e832b861e99218cbd2d8f4312d62e225 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8aebe18069394f4a79d2d82080a0f806da449996 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ca995b1462ec6db1e869100ba1fb7356bd3f22f0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/7241da033fdc507b920e092dab1f97b945cb0370 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b52f6d0ef7b308f9d05bbddb78749852f28e8e40 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/015a74476dc1ab6923d89f1ee009aaf43faa7185 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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