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CVE Vulnerability Details :
CVE-2026-31752
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-01 May, 2026 | 14:14
Updated At-14 Jul, 2026 | 12:48
Rejected At-
▼CVE Numbering Authority (CNA)
bridge: br_nd_send: validate ND option lengths

In the Linux kernel, the following vulnerability has been resolved: bridge: br_nd_send: validate ND option lengths br_nd_send() walks ND options according to option-provided lengths. A malformed option can make the parser advance beyond the computed option span or use a too-short source LLADDR option payload. Validate option lengths against the remaining NS option area before advancing, and only read source LLADDR when the option is large enough for an Ethernet address.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/bridge/br_arp_nd_proxy.c
Default Status
unaffected
Versions
Affected
  • From ed842faeb2bd49256f00485402f3113205f91d30 before 82a42eceec7c6bdb0e0da94c0542a173b7ea57f2 (git)
  • From ed842faeb2bd49256f00485402f3113205f91d30 before 259466f76f5a2148aff11134e68f4b4c6d52725b (git)
  • From ed842faeb2bd49256f00485402f3113205f91d30 before ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a (git)
  • From ed842faeb2bd49256f00485402f3113205f91d30 before e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa (git)
  • From ed842faeb2bd49256f00485402f3113205f91d30 before c49b9256bbacb6a135654aebd12e4c0e87166b7c (git)
  • From ed842faeb2bd49256f00485402f3113205f91d30 before 837392a38445729c22e03d3abcf33f07763efd85 (git)
  • From ed842faeb2bd49256f00485402f3113205f91d30 before e71303a9190496136e240c4f2872b7b0b16027a7 (git)
  • From ed842faeb2bd49256f00485402f3113205f91d30 before 850837965af15707fd3142c1cf3c5bfaf022299b (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/bridge/br_arp_nd_proxy.c
Default Status
affected
Versions
Affected
  • 4.15
Unaffected
  • From 0 before 4.15 (semver)
  • From 5.10.253 through 5.10.* (semver)
  • From 5.15.203 through 5.15.* (semver)
  • From 6.1.168 through 6.1.* (semver)
  • From 6.6.134 through 6.6.* (semver)
  • From 6.12.81 through 6.12.* (semver)
  • From 6.18.22 through 6.18.* (semver)
  • From 6.19.12 through 6.19.* (semver)
  • From 7.0 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2
N/A
https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b
N/A
https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a
N/A
https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa
N/A
https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c
N/A
https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85
N/A
https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7
N/A
https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b
N/A
Hyperlink: https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b
Resource: N/A
▼Authorized Data Publishers (ADP)
Affected Products
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.6 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.6 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.6 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.6 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Vendor
Siemens AGSiemens
Product
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.6 before * (custom)
Vendor
Siemens AGSiemens
Product
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
N/A
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
N/A
Hyperlink: https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Resource: N/A
Hyperlink: https://cert-portal.siemens.com/productcert/html/ssa-019113.html
Resource: N/A
Details not found