In the Linux kernel, the following vulnerability has been resolved:
ipvs: avoid out-of-bounds write in ip_vs_nat_icmp
Sashiko warns that local attacker can modify the packet while it is processed by IPVS. Some places read the IP ihl field multiple times which can cause out-of-bounds access. One such place is ip_vs_nat_icmp where we can write after the validated area.
Fix it by providing ciph argument just like it is done for IPv6 and use ciph->len as offset to the embedded transport header.
Modify some IPv4 header checks by reading the ihl field only once.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade perf6.18-debuginfoUpgrade bpftool6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade perf6.18Upgrade kernel6.18Upgrade python3-perf6.18-debuginfoUpgrade kernel-livepatch-6.18.48-107.148Upgrade kernel6.18-modules-extra-commonUpgrade python3-perf6.18Upgrade kernel6.18-tools-debuginfoUpgrade kernel6.18-toolsUpgrade kernel6.18-modules-extraUpgrade kernel6.18-debuginfoUpgrade bpftool6.18-debuginfoUpgrade microvm-kernel6.18Upgrade kernel6.18-develUpgrade kernel6.18-headersUpgrade kernel6.18-tools-develUpgrade kernel6.18-debuginfo-common-x86_64 | Sep 30, 2026 | Aug 22, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Aug 26, 2026 | Aug 26, 2026 |
| Redhat_linux | — | No solution exists | Aug 26, 2026 | Aug 22, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 15, 2026 | Aug 22, 2026 |
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