A vulnerability (CVE-2026-46331) in the Linux kernel's `net/sched: act_pedit` module allows an attacker to extend the writable range of a socket buffer (skb) per key, potentially leading to privilege escalation or other security impacts. This Red Hat security advisory, rated Important, provides updated kernel packages for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Extended Update Support Long-Life Add-On. The fix requires applying the specific kernel update and rebooting the affected system.
Red Hat Product Errata RHSA-2026:27707 - Security Advisory Issued: 2026-06-22 Updated: 2026-06-22 RHSA-2026:27707 - Security Advisory Overview Updated Packages Synopsis Important: kernel security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Affected Products Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.4 x86_64 Red Hat Enterprise Linux Server - AUS 8.4 x86_64 Fixes BZ - 2479492 - CVE-2026-46331 kernel: net/sched: act_pedit: extend the writable skb range per key CVEs CVE-2026-46331 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. 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