{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-53216: net: mvpp2: limit XDP frame size to the RX buffer","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-53216","status":"final","version":"1","initial_release_date":"2026-06-25T08:39:19.529Z","current_release_date":"2026-06-28T06:40:29.513Z","revision_history":[{"date":"2026-06-25T08:39:19.529Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"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.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-53216 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-53216"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-53216"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/a3ee9231ccec6ec3be2de89c56f897055fd9eab1"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/ec8e1e5842bc0dbd4c272761f4db3651eecd0339"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/3b8b0c3631b19faee53f0d15a49924129b063eec"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/994bd2b58d2bd08aa97ec0836cc813cfcb00d749"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3e"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/9545cc5ef18ca22d031f2f47c157192460652359"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/f3c6aa078927e6fe8121c9c591ddee8716c5305a"}]},"product_tree":{"branches":[{"category":"vendor","name":"Linux","branches":[{"category":"product_name","name":"Linux","branches":[{"category":"product_version_range","name":">=07dd0a7aae7f72af7cec18909581c2bb570edddc <a3ee9231ccec6ec3be2de89c56f897055fd9eab1","product":{"name":"Linux Linux >=07dd0a7aae7f72af7cec18909581c2bb570edddc <a3ee9231ccec6ec3be2de89c56f897055fd9eab1","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=07dd0a7aae7f72af7cec18909581c2bb570edddc <ec8e1e5842bc0dbd4c272761f4db3651eecd0339","product":{"name":"Linux Linux >=07dd0a7aae7f72af7cec18909581c2bb570edddc <ec8e1e5842bc0dbd4c272761f4db3651eecd0339","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=07dd0a7aae7f72af7cec18909581c2bb570edddc <3b8b0c3631b19faee53f0d15a49924129b063eec","product":{"name":"Linux Linux >=07dd0a7aae7f72af7cec18909581c2bb570edddc <3b8b0c3631b19faee53f0d15a49924129b063eec","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=07dd0a7aae7f72af7cec18909581c2bb570edddc <994bd2b58d2bd08aa97ec0836cc813cfcb00d749","product":{"name":"Linux Linux >=07dd0a7aae7f72af7cec18909581c2bb570edddc <994bd2b58d2bd08aa97ec0836cc813cfcb00d749","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=07dd0a7aae7f72af7cec18909581c2bb570edddc <910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3e","product":{"name":"Linux Linux >=07dd0a7aae7f72af7cec18909581c2bb570edddc <910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3e","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=07dd0a7aae7f72af7cec18909581c2bb570edddc <9545cc5ef18ca22d031f2f47c157192460652359","product":{"name":"Linux Linux >=07dd0a7aae7f72af7cec18909581c2bb570edddc <9545cc5ef18ca22d031f2f47c157192460652359","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=07dd0a7aae7f72af7cec18909581c2bb570edddc <f3c6aa078927e6fe8121c9c591ddee8716c5305a","product":{"name":"Linux Linux >=07dd0a7aae7f72af7cec18909581c2bb570edddc <f3c6aa078927e6fe8121c9c591ddee8716c5305a","product_id":"CSAFPID-7","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Linux","branches":[{"category":"product_name","name":"Linux","branches":[{"category":"product_version","name":"5.9","product":{"name":"Linux Linux 5.9","product_id":"CSAFPID-8","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"0","product":{"name":"Linux Linux 0","product_id":"CSAFPID-9","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"5.15.210","product":{"name":"Linux Linux 5.15.210","product_id":"CSAFPID-10","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"6.1.176","product":{"name":"Linux Linux 6.1.176","product_id":"CSAFPID-11","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"6.6.143","product":{"name":"Linux Linux 6.6.143","product_id":"CSAFPID-12","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"6.12.94","product":{"name":"Linux Linux 6.12.94","product_id":"CSAFPID-13","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"6.18.36","product":{"name":"Linux Linux 6.18.36","product_id":"CSAFPID-14","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.0.13","product":{"name":"Linux Linux 7.0.13","product_id":"CSAFPID-15","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.1","product":{"name":"Linux Linux 7.1","product_id":"CSAFPID-16","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-53216","title":"net: mvpp2: limit XDP frame size to the RX buffer","notes":[{"category":"description","text":"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.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8"],"fixed":["CSAFPID-9","CSAFPID-10","CSAFPID-11","CSAFPID-12","CSAFPID-13","CSAFPID-14","CSAFPID-15","CSAFPID-16"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 0, 3b8b0c3631b19faee53f0d15a49924129b063eec, 5.15.210, 6.1.176, 6.6.143, 6.12.94, 6.18.36, 7.0.13, 7.1, 910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3e, 9545cc5ef18ca22d031f2f47c157192460652359, 994bd2b58d2bd08aa97ec0836cc813cfcb00d749, a3ee9231ccec6ec3be2de89c56f897055fd9eab1, ec8e1e5842bc0dbd4c272761f4db3651eecd0339, f3c6aa078927e6fe8121c9c591ddee8716c5305a.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8"]}]}]}