CVE-2026-74728
Overview
CVE-2026-74728 is a known-severity vulnerability. It was published on August 22, 2026.
Technical Description
In the Linux kernel, the following vulnerability has been resolved:
xfs: handle NULL b_addr in xfs_buf_free
When xfs_buf_alloc_backing_mem() fails, xfs_buf_free() is called with
bp->b_addr still NULL. The code falls through to the folio_put path
which calls virt_to_folio(NULL), dereferencing an invalid address and
causing a kernel crash.
Call Trace:
xfs_buf_free+0x25f/0x510
xfs_buf_alloc+0xc98/0x19b0
xfs_buf_find_insert+0x55/0x14d0
xfs_buf_get_map+0x122b/0x17c0
xfbtree_init_leaf_block+0x11c/0x4a0
xfbtree_init+0x1bb/0x460
xrep_rmap_setup_scan+0x100/0x1f0
xrep_rmapbt+0x41/0xc0
Fix this by skipping folio_put() when bp->b_addr is NULL.
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Frequently Asked Questions
What is CVE-2026-74728?
CVE-2026-74728 is a known-severity vulnerability. It was published on August 22, 2026.
How severe is CVE-2026-74728?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-74728?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-74728?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-74728 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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