{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-08T08:59:23.601","vulnerabilities":[{"cve":{"id":"CVE-2023-54262","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-12-30T13:16:14.993","lastModified":"2026-04-15T00:35:42.020","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Don't clone flow post action attributes second time\n\nThe code already clones post action attributes in\nmlx5e_clone_flow_attr_for_post_act(). Creating another copy in\nmlx5e_tc_post_act_add() is a erroneous leftover from original\nimplementation. Instead, assign handle->attribute to post_attr provided by\nthe caller. Note that cloning the attribute second time is not just\nwasteful but also causes issues like second copy not being properly updated\nin neigh update code which leads to following use-after-free:\n\nFeb 21 09:02:00 c-237-177-40-045 kernel: BUG: KASAN: use-after-free in mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_report+0xbb/0x1a0\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_save_stack+0x1e/0x40\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_set_track+0x21/0x30\nFeb 21 09:02:00 c-237-177-40-045 kernel:  __kasan_kmalloc+0x7a/0x90\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_save_stack+0x1e/0x40\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_set_track+0x21/0x30\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_save_free_info+0x2a/0x40\nFeb 21 09:02:00 c-237-177-40-045 kernel:  ____kasan_slab_free+0x11a/0x1b0\nFeb 21 09:02:00 c-237-177-40-045 kernel: page dumped because: kasan: bad access detected\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5_core 0000:08:00.0: mlx5_cmd_out_err:803:(pid 8833): SET_FLOW_TABLE_ENTRY(0x936) op_mod(0x0) failed, status bad resource state(0x9), syndrome (0xf2ff71), err(-22)\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5_core 0000:08:00.0 enp8s0f0: Failed to add post action rule\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5_core 0000:08:00.0: mlx5e_tc_encap_flows_add:190:(pid 8833): Failed to update flow post acts, -22\nFeb 21 09:02:00 c-237-177-40-045 kernel: Call Trace:\nFeb 21 09:02:00 c-237-177-40-045 kernel:  <TASK>\nFeb 21 09:02:00 c-237-177-40-045 kernel:  dump_stack_lvl+0x57/0x7d\nFeb 21 09:02:00 c-237-177-40-045 kernel:  print_report+0x170/0x471\nFeb 21 09:02:00 c-237-177-40-045 kernel:  ? mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_report+0xbb/0x1a0\nFeb 21 09:02:00 c-237-177-40-045 kernel:  ? mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  ? __module_address.part.0+0x62/0x200\nFeb 21 09:02:00 c-237-177-40-045 kernel:  ? mlx5_cmd_stub_create_flow_table+0xd0/0xd0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  ? __raw_spin_lock_init+0x3b/0x110\nFeb 21 09:02:00 c-237-177-40-045 kernel:  mlx5_cmd_create_fte+0x80/0xb0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  add_rule_fg+0xe80/0x19c0 [mlx5_core]\n--\nFeb 21 09:02:00 c-237-177-40-045 kernel: Allocated by task 13476:\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_save_stack+0x1e/0x40\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_set_track+0x21/0x30\nFeb 21 09:02:00 c-237-177-40-045 kernel:  __kasan_kmalloc+0x7a/0x90\nFeb 21 09:02:00 c-237-177-40-045 kernel:  mlx5_packet_reformat_alloc+0x7b/0x230 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  mlx5e_tc_tun_create_header_ipv4+0x977/0xf10 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  mlx5e_attach_encap+0x15b4/0x1e10 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  post_process_attr+0x305/0xa30 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  mlx5e_tc_add_fdb_flow+0x4c0/0xcf0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  __mlx5e_add_fdb_flow+0x7cf/0xe90 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  mlx5e_configure_flower+0xcaa/0x4b90 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  mlx5e_rep_setup_tc_cls_flower+0x99/0x1b0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel:  mlx5e_rep_setup_tc_cb+0x133/0x1e0 [mlx5_core]\n--\nFeb 21 09:02:00 c-237-177-40-045 kernel: Freed by task 8833:\nFeb 21 09:02:00 c-237-177-40-045 kernel:  kasan_save_s\n---truncated---"},{"lang":"es","value":"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/mlx5e: No clonar los atributos de acción posterior de flujo por segunda vez\n\nEl código ya clona los atributos de acción posterior en mlx5e_clone_flow_attr_for_post_act(). Crear otra copia en mlx5e_tc_post_act_add() es un remanente erróneo de la implementación original. En su lugar, asignar handle-&gt;attribute a post_attr proporcionado por el llamador. Tenga en cuenta que clonar el atributo por segunda vez no solo es un desperdicio, sino que también causa problemas como que la segunda copia no se actualice correctamente en el código de actualización de 'neigh', lo que lleva al siguiente uso después de liberación:\n\nFeb 21 09:02:00 c-237-177-40-045 kernel: BUG: KASAN: use-after-free in mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_report+0xbb/0x1a0\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_stack+0x1e/0x40\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_set_track+0x21/0x30\nFeb 21 09:02:00 c-237-177-40-045 kernel: __kasan_kmalloc+0x7a/0x90\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_stack+0x1e/0x40\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_set_track+0x21/0x30\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_free_info+0x2a/0x40\nFeb 21 09:02:00 c-237-177-40-045 kernel: ____kasan_slab_free+0x11a/0x1b0\nFeb 21 09:02:00 c-237-177-40-045 kernel: page dumped because: kasan: bad access detected\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5_core 0000:08:00.0: mlx5_cmd_out_err:803:(pid 8833): SET_FLOW_TABLE_ENTRY(0x936) op_mod(0x0) failed, status bad resource state(0x9), syndrome (0xf2ff71), err(-22)\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5_core 0000:08:00.0 enp8s0f0: Failed to add post action rule\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5_core 0000:08:00.0: mlx5e_tc_encap_flows_add:190:(pid 8833): Failed to update flow post acts, -22\nFeb 21 09:02:00 c-237-177-40-045 kernel: Traza de Llamada:\nFeb 21 09:02:00 c-237-177-40-045 kernel: \nFeb 21 09:02:00 c-237-177-40-045 kernel: dump_stack_lvl+0x57/0x7d\nFeb 21 09:02:00 c-237-177-40-045 kernel: print_report+0x170/0x471\nFeb 21 09:02:00 c-237-177-40-045 kernel: ? mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_report+0xbb/0x1a0\nFeb 21 09:02:00 c-237-177-40-045 kernel: ? mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5_cmd_set_fte+0x200d/0x24c0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: ? __module_address.part.0+0x62/0x200\nFeb 21 09:02:00 c-237-177-40-045 kernel: ? mlx5_cmd_stub_create_flow_table+0xd0/0xd0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: ? __raw_spin_lock_init+0x3b/0x110\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5_cmd_create_fte+0x80/0xb0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: add_rule_fg+0xe80/0x19c0 [mlx5_core]\n--\nFeb 21 09:02:00 c-237-177-40-045 kernel: Asignado por tarea 13476:\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_stack+0x1e/0x40\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_set_track+0x21/0x30\nFeb 21 09:02:00 c-237-177-40-045 kernel: __kasan_kmalloc+0x7a/0x90\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5_packet_reformat_alloc+0x7b/0x230 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_tc_tun_create_header_ipv4+0x977/0xf10 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_attach_encap+0x15b4/0x1e10 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: post_process_attr+0x305/0xa30 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_tc_add_fdb_flow+0x4c0/0xcf0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: __mlx5e_add_fdb_flow+0x7cf/0xe90 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_configure_flower+0xcaa/0x4b90 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_rep_setup_tc_cls_flower+0x99/0x1b0 [mlx5_core]\nFeb 21 09:02:00 c-237-177-40-045 kernel: mlx5e_rep_setup_tc_cb+0x133/0x1e0 [mlx5_core]\n--\nFeb 21 09:02:00 c-237-177-40-045 kernel: Liberado por tarea 8833:\nFeb 21 09:02:00 c-237-177-40-045 kernel: kasan_save_s\n---truncado---"}],"metrics":{},"references":[{"url":"https://git.kernel.org/stable/c/2d57a514f9ab7d2d40f49b02d93edfcec8c78a9e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8fd1dac646e6b08d03e3f1ad3c5b34255b1e08e8","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c382b693ffcb1f1ebf60d76ab9dedfe9ea13eedf","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e9fce818fe003b6c527f25517b9ac08eb4661b5d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}]}}]}