{"cve":"CVE-2023-53720","nvd":{"published":"2025-10-22T14:15:46.700","modified":"2026-10-28T19:10:00.193","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Release the label when replacing existing ct entry\n\nCited commit doesn't release the label mapping when replacing existing ct\nentry which leads to following memleak report:\n\nunreferenced object 0xffff8881854cf280 (size 96):\n  comm \"kworker/u48:74\", pid 23093, jiffies 4296664564 (age 175.944s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [<000000002722d368>] __kmalloc+0x4b/0x1c0\n    [<00000000cc44e18f>] mapping_add+0x6e8/0xc90 [mlx5_core]\n    [<000000003ad942a7>] mlx5_get_label_mapping+0x66/0xe0 [mlx5_core]\n    [<00000000266308ac>] mlx5_tc_ct_entry_create_mod_hdr+0x1c4/0xf50 [mlx5_core]\n    [<000000009a768b4f>] mlx5_tc_ct_entry_add_rule+0x16f/0xaf0 [mlx5_core]\n    [<00000000a178f3e5>] mlx5_tc_ct_block_flow_offload_add+0x10cb/0x1f90 [mlx5_core]\n    [<000000007b46c496>] mlx5_tc_ct_block_flow_offload+0x14a/0x630 [mlx5_core]\n    [<00000000a9a18ac5>] nf_flow_offload_tuple+0x1a3/0x390 [nf_flow_table]\n    [<00000000d0881951>] flow_offload_work_handler+0x257/0xd30 [nf_flow_table]\n    [<000000009e4935a4>] process_one_work+0x7c2/0x13e0\n    [<00000000f5cd36a7>] worker_thread+0x59d/0xec0\n    [<00000000baed1daf>] kthread+0x28f/0x330\n    [<0000000063d282a4>] ret_from_fork+0x1f/0x30\n\nFix the issue by correctly releasing the label mapping.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/3db903a71f1f4bbf30baae166a4a49f2e8aceb61","https://git.kernel.org/stable/c/8ac04a28144cfa89b61be518268233742c23d88d"],"products":[],"source":"nvd","synced_at":"2026-10-28T19:37:43.506563291+00:00"},"epss":{"cve":"CVE-2023-53720","score":0.00184,"percentile":0.07997,"date":"2026-10-28"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}