In the Linux kernel, the following vulnerability has been resolved:
sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid
sctp_auth_ep_add_chunkid() uses SCTP_NUM_CHUNK_TYPES (20) as the capacity limit for ep->auth_chunk_list, allowing it to hold up to 20 chunk entries (param_hdr.length up to 24). However, the copy destination asoc->c.auth_chunks in struct sctp_cookie is only SCTP_AUTH_MAX_CHUNKS (16) entries (20 bytes). When more than 16 chunks are added, sctp_association_init() memcpy overflows the destination by up to 4 bytes.
Fix by using SCTP_AUTH_MAX_CHUNKS as the capacity limit, matching the destination capacity.
CVSS Details
- CVSS 3.1 Base Score: 7.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-develUpgrade kernel6.18-modules-extra-commonUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.18-modules-extraUpgrade kernel6.18-toolsUpgrade kernel6.18-headersUpgrade python3-perf6.12Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-tools-develUpgrade kernel6.18Upgrade perf6.12-debuginfoUpgrade kernel-livepatch-6.18.44-99.149Upgrade kernel6.12Upgrade microvm-kernel6.18Upgrade python3-perf6.12-debuginfoUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-toolsUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel-livepatch-6.12.103-127.188Upgrade kernel6.18-tools-develUpgrade perf6.18Upgrade bpftool6.12Upgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-modules-extraUpgrade kernel6.12-debuginfo-common-aarch64Upgrade bpftool6.18Upgrade perf6.18-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.18-develUpgrade kernel6.18-debuginfoUpgrade perf6.12Upgrade bpftool6.18-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade kernel6.12-headersUpgrade python3-perf6.18 | Sep 1, 2026 | Aug 10, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Aug 11, 2026 | Aug 11, 2026 |
| Redhat_linux | — | No solution exists | Aug 13, 2026 | Aug 10, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 17, 2026 | Aug 10, 2026 |
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