Answer in brief
CVE-2026-43339 records a Unknown severity vulnerability in ipv6: prevent possible UaF in addrconf_permanent_addr(). 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.
Answer in brief
CVE-2026-43339 records a Unknown severity vulnerability in ipv6: prevent possible UaF in addrconf_permanent_addr(). 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.
A CVSS score is not reported in the current record. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <eec49a33611f20336b357b3953df44f1a02049e8 || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <bacc7f31085c9820922f00bc7d79756ffa13123a || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <7bfafa1b0cd582983ebec6bb20f0a435528fe567 || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <25357b670afb5b517096da783abaa5cc4bf8359e || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <3cd4efb5df72843dfac892d0b3c7a4a8bd926b65 || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1 || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <fd63f185979b047fb22a0dfc6bd94d0cab6a6a70 | eec49a33611f20336b357b3953df44f1a02049e8, bacc7f31085c9820922f00bc7d79756ffa13123a, 7bfafa1b0cd582983ebec6bb20f0a435528fe567, 7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e, 25357b670afb5b517096da783abaa5cc4bf8359e, 3cd4efb5df72843dfac892d0b3c7a4a8bd926b65, 2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1, fd63f185979b047fb22a0dfc6bd94d0cab6a6a70 |
| Linux/Linuxgeneric | 4.6 | Not reported |
Published upstream
May 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: ipv6: prevent possible UaF in addrconf_permanent_addr() The mentioned helper try to warn the user about an exceptional condition, but the message is delivered too late, accessing the ipv6 after its possible deletion. Reorder the statement to avoid the possible UaF; while at it, place the warning outside the idev->lock as it needs no protection.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <eec49a33611f20336b357b3953df44f1a02049e8 || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <bacc7f31085c9820922f00bc7d79756ffa13123a || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <7bfafa1b0cd582983ebec6bb20f0a435528fe567 || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <25357b670afb5b517096da783abaa5cc4bf8359e || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <3cd4efb5df72843dfac892d0b3c7a4a8bd926b65 || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1 || >=f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac <fd63f185979b047fb22a0dfc6bd94d0cab6a6a70 | eec49a33611f20336b357b3953df44f1a02049e8, bacc7f31085c9820922f00bc7d79756ffa13123a, 7bfafa1b0cd582983ebec6bb20f0a435528fe567, 7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e, 25357b670afb5b517096da783abaa5cc4bf8359e, 3cd4efb5df72843dfac892d0b3c7a4a8bd926b65, 2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1, fd63f185979b047fb22a0dfc6bd94d0cab6a6a70 |
| Linux/Linuxgeneric | 4.6 | Not reported |
Published upstream
May 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: ipv6: prevent possible UaF in addrconf_permanent_addr() The mentioned helper try to warn the user about an exceptional condition, but the message is delivered too late, accessing the ipv6 after its possible deletion. Reorder the statement to avoid the possible UaF; while at it, place the warning outside the idev->lock as it needs no protection.
Quoted source text, attributed separately from HOL analysis.