{"apiVersion":"1.0","identifier":"CVE-2026-72339","description":"In the Linux kernel, the following vulnerability has been resolved: qede: fix off-by-one in BD ring consumption on build_skb failure qede_rx_build_skb() and qede_tpa_rx_build_skb() do not check for a NULL return from qede_build_skb(). When it returns NULL under memory pressure, the functions still consume a BD from the ring before returning NULL. The callers then recycle additional BDs, resulting in one extra BD being consumed (off-by-one). This desynchronizes the BD ring, which can corrupt DMA page reference counts and lead to SLUB freelist corruption. Commit 4e910dbe3650 (-qede: confirm skb is allocated before using-) added a NULL check inside qede_build_skb() to prevent a NULL pointer dereference, but did not address the missing NULL checks in the callers, making this off-by-one reachable. Fix this by adding NULL checks for the return value of qede_build_skb() in both qede_rx_build_skb() and qede_tpa_rx_build_skb(), returning NULL immediately before any BD ring manipulation.","publishedAt":"2026-08-15T06:22:07","lastModifiedAt":"2026-08-17T06:18:37","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72339","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00745,"riskScore":1.05,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72339","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72339","en":"https://www.redsauce.net/en/cves/CVE-2026-72339","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72339","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72339","de":"https://www.redsauce.net/de/cves/CVE-2026-72339","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72339","el":"https://www.redsauce.net/el/cves/CVE-2026-72339"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72339"}}