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CVE-2026-53337: Linux

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: net: bonding: fix NULL pointer dereference in bond_do_ioctl() In bond_do_ioctl(), slave_dev is obtained via __dev_get_by_name() which can return NULL if the requested interface name does not exist. However, the subsequent slave_dbg() call is placed before the NULL check: slave_dev = __dev_get_by_name(net, ifr->ifr_slave); slave_dbg(bond_dev, slave_dev, "slave_dev=%p:\n", slave_dev); //here if (!slave_dev) return -ENODEV; The slave_dbg() macro expands to netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ...) which unconditionally dereferences slave_dev->name before the NULL check is performed. This results in a NULL pointer dereference kernel oops when a user calls bonding ioctl (e.g. SIOCBONDENSLAVE, SIOCBONDRELEASE, etc.) with a non-existent slave interface name. This is reachable from userspace via the bonding ioctl interface with CAP_NET_ADMIN capability, making it a potential local denial-of-service vector. Fix by moving the slave_dbg() call after the NULL check.

    Засегнати продукти

    • Linux Linux: e2a7420df2e01370b40e4cf7b85ab9a885c6d755 преди 1b7558c85493467b2ea20738866b822db6442034; e2a7420df2e01370b40e4cf7b85ab9a885c6d755 преди b02b2e3e876c18733b868a29064abd11cdbf8feb; e2a7420df2e01370b40e4cf7b85ab9a885c6d755 преди 66693957bacd1c9dae6188a7312d6be69a221f2d; e2a7420df2e01370b40e4cf7b85ab9a885c6d755 преди a629418d463fb50d132a1aa063b0105857311e5f; e2a7420df2e01370b40e4cf7b85ab9a885c6d755 преди c2cfe290fdb1c32a4f4eb2b8ca3f363b305d21ba; e2a7420df2e01370b40e4cf7b85ab9a885c6d755 преди bcb8fad90f27300add583a8371db504b766d95c7; e2a7420df2e01370b40e4cf7b85ab9a885c6d755 преди b0878106ddc486375084145848ff255dedfff46a; e2a7420df2e01370b40e4cf7b85ab9a885c6d755 преди a764b0e8317a863006e05732e1aefe821b9d8c2d
    • Linux Linux: 5.3; преди 5.3; 5.10.259 до 5.10.*; 5.15.210 до 5.15.*; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.94 до 6.12.*; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; от 7.1 нататък
    • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: всички версии

    История

    • 1 юли 2026 Публикувано

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    CVE-2026-53337: Linux | freedomonline.bg