{"apiVersion":"1.0","identifier":"CVE-2026-74728","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.","publishedAt":"2026-08-22T16:16:47","lastModifiedAt":"2026-08-22T16:16:47","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74728","cvssScore":null,"cvssVector":"Pending","epssProbability":0.0017,"riskScore":0,"affectedProduct":"linux","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74728","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74728","en":"https://www.redsauce.net/en/cves/CVE-2026-74728","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74728","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74728","de":"https://www.redsauce.net/de/cves/CVE-2026-74728","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74728","el":"https://www.redsauce.net/el/cves/CVE-2026-74728"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74728"}}