Answer in brief
CVE-2024-26665 records a Unknown severity vulnerability in tunnels: fix out of bounds access when building IPv6 PMTU error. 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-2024-26665 records a Unknown severity vulnerability in tunnels: fix out of bounds access when building IPv6 PMTU error. 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 | >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <d964dd1bc1452594b4207d9229c157d9386e5d8a || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <e37cde7a5716466ff2a76f7f27f0a29b05b9a732 || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <510c869ffa4068c5f19ff4df51d1e2f3a30aaac1 || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <7dc9feb8b1705cf00de20563b6bc4831f4c99dab || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <d75abeec401f8c86b470e7028a13fcdc87e5dd06 | e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d, d964dd1bc1452594b4207d9229c157d9386e5d8a, e37cde7a5716466ff2a76f7f27f0a29b05b9a732, 510c869ffa4068c5f19ff4df51d1e2f3a30aaac1, 7dc9feb8b1705cf00de20563b6bc4831f4c99dab, d75abeec401f8c86b470e7028a13fcdc87e5dd06 |
| Linux/Linuxgeneric | 5.9 | Not reported |
Published upstream
Apr 2, 2024
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: tunnels: fix out of bounds access when building IPv6 PMTU error If the ICMPv6 error is built from a non-linear skb we get the following splat, BUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240 Read of size 4 at addr ffff88811d402c80 by task netperf/820 CPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543 ... kasan_report+0xd8/0x110 do_csum+0x220/0x240 csum_partial+0xc/0x20 skb_tunnel_check_pmtu+0xeb9/0x3280 vxlan_xmit_one+0x14c2/0x4080 vxlan_xmit+0xf61/0x5c00 dev_hard_start_xmit+0xfb/0x510 __dev_queue_xmit+0x7cd/0x32a0 br_dev_queue_push_xmit+0x39d/0x6a0 Use skb_checksum instead of csum_partial who cannot deal with non-linear SKBs.
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 | >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <d964dd1bc1452594b4207d9229c157d9386e5d8a || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <e37cde7a5716466ff2a76f7f27f0a29b05b9a732 || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <510c869ffa4068c5f19ff4df51d1e2f3a30aaac1 || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <7dc9feb8b1705cf00de20563b6bc4831f4c99dab || >=4cb47a8644cc9eb8ec81190a50e79e6530d0297f <d75abeec401f8c86b470e7028a13fcdc87e5dd06 | e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d, d964dd1bc1452594b4207d9229c157d9386e5d8a, e37cde7a5716466ff2a76f7f27f0a29b05b9a732, 510c869ffa4068c5f19ff4df51d1e2f3a30aaac1, 7dc9feb8b1705cf00de20563b6bc4831f4c99dab, d75abeec401f8c86b470e7028a13fcdc87e5dd06 |
| Linux/Linuxgeneric | 5.9 | Not reported |
Published upstream
Apr 2, 2024
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: tunnels: fix out of bounds access when building IPv6 PMTU error If the ICMPv6 error is built from a non-linear skb we get the following splat, BUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240 Read of size 4 at addr ffff88811d402c80 by task netperf/820 CPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543 ... kasan_report+0xd8/0x110 do_csum+0x220/0x240 csum_partial+0xc/0x20 skb_tunnel_check_pmtu+0xeb9/0x3280 vxlan_xmit_one+0x14c2/0x4080 vxlan_xmit+0xf61/0x5c00 dev_hard_start_xmit+0xfb/0x510 __dev_queue_xmit+0x7cd/0x32a0 br_dev_queue_push_xmit+0x39d/0x6a0 Use skb_checksum instead of csum_partial who cannot deal with non-linear SKBs.
Quoted source text, attributed separately from HOL analysis.