ZeroHour

CVE-2022-49692

CVSS 3.1
5.5 medium
EPSS
<1%p15
Published
()
Modified
Description

In the Linux kernel, the following vulnerability has been resolved: net: phy: at803x: fix NULL pointer dereference on AR9331 PHY Latest kernel will explode on the PHY interrupt config, since it depends now on allocated priv. So, run probe to allocate priv to fix it. ar9331_switch ethernet.1:10 lan0 (uninitialized): PHY [!ahb!ethernet@1a000000!mdio!switch@10:00] driver [Qualcomm Atheros AR9331 built-in PHY] (irq=13) CPU 0 Unable to handle kernel paging request at virtual address 0000000a, epc == 8050e8a8, ra == 80504b34 ... Call Trace: [ ] at803x_config_intr+0x5c/0xd0 [ ] phy_request_interrupt+0xa8/0xd0 [ ] phylink_bringup_phy+0x2d8/0x3ac [ ] phylink_fwnode_phy_connect+0x118/0x130 [ ] dsa_slave_create+0x270/0x420 [ ] dsa_port_setup+0x12c/0x148 [ ] dsa_register_switch+0xaf0/0xcc0 [ ] ar9331_sw_probe+0x370/0x388 [ ] mdio_probe+0x44/0x70 [ ] really_probe+0x200/0x424 [ ] __driver_probe_device+0x290/0x298 [ ] driver_probe_device+0x54/0xe4 [ ] __device_attach_driver+0xe4/0x130 [ ] bus_for_each_drv+0xb4/0xd8 [ ] __device_attach+0x104/0x1a4 [ ] bus_probe_device+0x48/0xc4 [ ] deferred_probe_work_func+0xf0/0x10c [ ] process_one_work+0x314/0x4d4 [ ] worker_thread+0x2a4/0x354 [ ] kthread+0x134/0x13c [ ] ret_from_kernel_thread+0x14/0x1c Same Issue would affect some other PHYs (QCA8081, QCA9561), so fix it too.

Vendors
linux
Products
linux kernel
Weakness
CWE-476
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

In the news

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