Към съдържанието
Търсене

CVE-2026-23428: Linux, грешка в паметта

9.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of share_conf in compound request smb2_get_ksmbd_tcon() reuses work->tcon in compound requests without validating tcon->t_state. ksmbd_tree_conn_lookup() checks t_state == TREE_CONNECTED on the initial lookup path, but the compound reuse path bypasses this check entirely. If a prior command in the compound (SMB2_TREE_DISCONNECT) sets t_state to TREE_DISCONNECTED and frees share_conf via ksmbd_share_config_put(), subsequent commands dereference the freed share_conf through work->tcon->share_conf. KASAN report: [ 4.144653] ================================================================== [ 4.145059] BUG: KASAN: slab-use-after-free in smb2_write+0xc74/0xe70 [ 4.145415] Read of size 4 at addr ffff88810430c194 by task kworker/1:1/44 [ 4.145772] [ 4.145867] CPU: 1 UID: 0 PID: 44 Comm: kworker/1:1 Not tainted 7.0.0-rc3+ #60 PREEMPTLAZY [ 4.145871] Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 4.145875] Workqueue: ksmbd-io handle_ksmbd_work [ 4.145888] Call Trace: [ 4.145892] <TASK> [ 4.145894] dump_stack_lvl+0x64/0x80 [ 4.145910] print_report+0xce/0x660 [ 4.145919] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 4.145928] ? smb2_write+0xc74/0xe70 [ 4.145931] kasan_report+0xce/0x100 [ 4.145934] ? smb2_write+0xc74/0xe70 [ 4.145937] smb2_write+0xc74/0xe70 [ 4.145939] ? __pfx_smb2_write+0x10/0x10 [ 4.145942] ? _raw_spin_unlock+0xe/0x30 [ 4.145945] ? ksmbd_smb2_check_message+0xeb2/0x24c0 [ 4.145948] ? smb2_tree_disconnect+0x31c/0x480 [ 4.145951] handle_ksmbd_work+0x40f/0x1080 [ 4.145953] process_one_work+0x5fa/0xef0 [ 4.145962] ? assign_work+0x122/0x3e0 [ 4.145964] worker_thread+0x54b/0xf70 [ 4.145967] ? __pfx_worker_thread+0x10/0x10 [ 4.145970] kthread+0x346/0x470 [ 4.145976] ? recalc_sigpending+0x19b/0x230 [ 4.

Засегнати продукти

  • Linux Linux: eb947403518ea3d93f6d89264bb1f5416bb0c7d0 преди d08417981155883068b7260d9500ca306a03edac; 854156d12caa9d36de1cf5f084591c7686cc8a9d преди eae0dc86f71e6f3294c0cd7ffc05039258d243af; 5005bcb4219156f1bf7587b185080ec1da08518e преди 806f13752652216db0c309392b4db3e64eeed4f2; 5005bcb4219156f1bf7587b185080ec1da08518e преди c742b46a153d3ff95ff0825ab1950c87b9e14470; 5005bcb4219156f1bf7587b185080ec1da08518e преди 7f7468fd2a7554cea91b7d430335a3dbf01dcc09; 5005bcb4219156f1bf7587b185080ec1da08518e преди a5929c2020ce54e1dcbd1078c0f30b8aaf73c105; 5005bcb4219156f1bf7587b185080ec1da08518e преди c33615f995aee80657b9fdfbc4ee7f49c2bd733d; d1066c1b3663401cd23c0d6e60cdae750ce00c0f; 5.15.121 преди 5.15.203; 6.1.36 преди 6.1.167; 6.3.10 преди 6.4
  • Linux Linux: 6.4; преди 6.4; 5.15.203 до 5.15.*; 6.1.167 до 6.1.*; 6.6.130 до 6.6.*; 6.12.78 до 6.12.*; 6.18.20 до 6.18.*; 6.19.10 до 6.19.*; от 7.0 нататък

Вид слабост

История

  • 3 април 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-23428: Linux, грешка в паметта | freedomonline.bg