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CVE-2026-53069: Linux, грешка в паметта

7.5

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: net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master syzkaller reported a kernel panic in bond_rr_gen_slave_id() reached via xdp_master_redirect(). Full decoded trace: https://syzkaller.appspot.com/bug?extid=80e046b8da2820b6ba73 bond_rr_gen_slave_id() dereferences bond->rr_tx_counter, a per-CPU counter that bonding only allocates in bond_open() when the mode is round-robin. If the bond device was never brought up, rr_tx_counter stays NULL. The XDP redirect path can still reach that code on a bond that was never opened: bpf_master_redirect_enabled_key is a global static key, so as soon as any bond device has native XDP attached, the XDP_TX -> xdp_master_redirect() interception is enabled for every slave system-wide. The path xdp_master_redirect() -> bond_xdp_get_xmit_slave() -> bond_xdp_xmit_roundrobin_slave_get() -> bond_rr_gen_slave_id() then runs against a bond that has no rr_tx_counter and crashes. Fix this in the generic xdp_master_redirect() by refusing to call into the master's ->ndo_xdp_get_xmit_slave() when the master device is not up. IFF_UP is only set after ->ndo_open() has successfully returned, so this reliably excludes masters whose XDP state has not been fully initialized. Drop the frame with XDP_ABORTED so the exception is visible via trace_xdp_exception() rather than silently falling through. This is not specific to bonding: any current or future master that defers XDP state allocation to ->ndo_open() is protected.

Засегнати продукти

  • Linux Linux: 879af96ffd72706c6e3278ea6b45b0b0e37ec5d7 преди 3128b294b426533c8d9162187446d93a8a160359; 879af96ffd72706c6e3278ea6b45b0b0e37ec5d7 преди acbf45bd584d924b320bee2a7fe2a26f64904d95; 879af96ffd72706c6e3278ea6b45b0b0e37ec5d7 преди 866d3d9b87751b1944168fd82615505e0c0fd6cf; 879af96ffd72706c6e3278ea6b45b0b0e37ec5d7 преди 183128da0406b1c10e6f60b7b9fe70788b9c8c1d; 879af96ffd72706c6e3278ea6b45b0b0e37ec5d7 преди 7bad93e99737e4a5c0c14ac50c05152cf4e28022; 879af96ffd72706c6e3278ea6b45b0b0e37ec5d7 преди ea690b3b6e58ae00979af8195b4cc24df466b65e; 879af96ffd72706c6e3278ea6b45b0b0e37ec5d7 преди 1921f91298d1388a0bb9db8f83800c998b649cb3
  • Linux Linux: 5.15; преди 5.15; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.141 до 6.6.*; 6.12.91 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; 7.1 до *

Вид слабост

История

  • 24 юни 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-53069: Linux, грешка в паметта | freedomonline.bg