{"id":"CVE-2026-53216","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-53216","generatedAt":"2026-10-28T04:35:49.887Z","title":"In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: limit XDP frame size to the RX buffer mvpp2 has short and long BM pools, and short pool buffers can be smaller than PAGE_SIZE.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mvpp2: limit XDP frame size to the RX buffer\n\nmvpp2 has short and long BM pools, and short pool buffers can be smaller\nthan PAGE_SIZE. The XDP path nevertheless initializes every xdp_buff with\nPAGE_SIZE as frame size.\n\nXDP helpers use frame_sz to validate tail growth and to derive the hard\nend of the data area. Advertising PAGE_SIZE for short buffers can let\nbpf_xdp_adjust_tail() grow a packet past the real allocation, corrupting\nmemory or later tripping skb tailroom checks.\n\nInitialize the XDP buffer with bm_pool->frag_size so XDP tailroom matches\nthe actual buffer backing the packet.","published":"2026-06-25T09:16:39.000Z","lastModified":"2026-07-02T20:52:37.000Z","status":"Analyzed","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["linux/linux kernel"],"epss":{"score":0.00502,"percentile":0.42785,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/3b8b0c3631b19faee53f0d15a49924129b063eec","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3e","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9545cc5ef18ca22d031f2f47c157192460652359","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/994bd2b58d2bd08aa97ec0836cc813cfcb00d749","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a3ee9231ccec6ec3be2de89c56f897055fd9eab1","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ec8e1e5842bc0dbd4c272761f4db3651eecd0339","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f3c6aa078927e6fe8121c9c591ddee8716c5305a","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53216","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}