CVE-2026-68376
CVE-2026-68376: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh8.1
High [CVE-2026-68376] fix auth_hmacs array size in struct sctp_cookie
CVE-2026-68376Source published Source updated
In the Linux kernel, the following vulnerability has been resolved: sctp: fix auth_hmacs array size in struct sctp_cookie The auth_hmacs array in struct sctp_cookie is supposed to store a complete SCTP_AUTH_HMAC_ALGO parameter, which consists of a struct sctp_paramhdr followed by N HMAC identifiers. However, the array size was calculated using an extra 2 bytes instead of sizeof(struct sctp_paramhdr), which is 4 bytes. When four HMAC identifiers are configured, the HMAC-ALGO parameter stored in the endpoint is larger than the auth_hmacs buffer in the cookie. As a result, sctp_association_init() copies beyond the end of auth_hmacs when initializing the association, corrupting the adjacent auth_chunks field. This can lead to an invalid HMAC identifier being accepted and later cause an…
- Affected products in this advisory
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
3 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- kernel-rt-0:4.18.0-553.162.1.rt7.503.el8_10
- kernel-0:4.18.0-553.162.1.el8_10
- kernel-0:5.14.0-687.47.1.el9_8
- RHSA-2026:66324
2 more entries in the full advisory.
- Mitigation guidance
- To prevent the SCTP kernel module from loading, blacklist it by creating a file `/etc/modprobe.d/disable-sctp.conf` with the content `blacklist sctp`. Regenerate the initramfs using `dracut -f -v` (RHEL 8/9/10) or `mkinitrd -f -v /boot/initramfs-$(uname -r).img $(uname -r)` (RHEL 7), then reboot the system. This action may affect applications dependent on SCTP.
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