{"apiVersion":"1.0","identifier":"CVE-2026-72482","description":"In the Linux kernel, the following vulnerability has been resolved: gpib: fix double decrement of descriptor_busy in command_ioctl() commit d1857f8296dc (-gpib: fix use-after-free in IO ioctl handlers-) introduced a descriptor_busy reference counter to pin struct gpib_descriptor across IO ioctl operations. In command_ioctl(), the error path inside the loop decrements descriptor_busy and breaks, but execution then falls through to the unconditional decrement after the loop, underflowing the counter to -1. This re-enables the use-after-free that the original fix was meant to prevent: a concurrent close_dev_ioctl() sees descriptor_busy == 0 on an actively-used descriptor and frees it. Remove the early decrement from the error path. The post-loop decrement already handles all exit paths, matching the correct pattern used in read_ioctl() and write_ioctl().","publishedAt":"2026-08-15T06:22:22","lastModifiedAt":"2026-08-17T06:19:16","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72482","cvssScore":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.0013,"riskScore":0.79,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72482","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72482","en":"https://www.redsauce.net/en/cves/CVE-2026-72482","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72482","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72482","de":"https://www.redsauce.net/de/cves/CVE-2026-72482","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72482","el":"https://www.redsauce.net/el/cves/CVE-2026-72482"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72482"}}