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CVE PROGRAM SOURCE RECORDUnscored

CVE-2024-46679

ethtool: check device is present when getting link settings

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: ethtool: check device is present when getting link settings A sysfs reader can race with a device reset or removal, attempting to read device state when the device is not actually present. eg: [exception RIP: qed_get_current_link+17] #8 [ffffb9e4f2907c48] qede_get_link_ksettings at ffffffffc07a994a [qede] #9 [ffffb9e4f2907cd8] __rh_call_get_link_ksettings at ffffffff992b01a3 #10 [ffffb9e4f2907d38] __ethtool_get_link_ksettings at ffffffff992b04e4 #11 [ffffb9e4f2907d90] duplex_show at ffffffff99260300 #12 [ffffb9e4f2907e38] dev_attr_show at ffffffff9905a01c #13 [ffffb9e4f2907e50] sysfs_kf_seq_show at ffffffff98e0145b #14 [ffffb9e4f2907e68] seq_read at ffffffff98d902e3 #15 [ffffb9e4f2907ec8] vfs_read at ffffffff98d657d1 #16 [ffffb9e4f2907f00] ksys_read at ffffffff98d65c3f #17 [ffffb9e4f2907f38] do_syscall_64 at ffffffff98a052fb crash> struct net_device.state ffff9a9d21336000 state = 5, state 5 is __LINK_STATE_START (0b1) and __LINK_STATE_NOCARRIER (0b100). The device is not present, note lack of __LINK_STATE_PRESENT (0b10). This is the same sort of panic as observed in commit 4224cfd7fb65 ("net-sysfs: add check for netdevice being present to speed_show"). There are many other callers of __ethtool_get_link_ksettings() which don't have a device presence check. Move this check into ethtool to protect all callers.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • d519e17e2d01a0ee9abe083019532061b4438065 to < ec7b4f7f644018ac293cb1b02528a40a32917e62affected
  • d519e17e2d01a0ee9abe083019532061b4438065 to < 842a40c7273ba1c1cb30dda50405b328de1d860eaffected
  • d519e17e2d01a0ee9abe083019532061b4438065 to < 7a8d98b6d6484d3ad358510366022da080c37cbcaffected
  • d519e17e2d01a0ee9abe083019532061b4438065 to < 9bba5955eed160102114d4cc00c3d399be9bdae4affected
  • d519e17e2d01a0ee9abe083019532061b4438065 to < 94ab317024ba373d37340893d1c0358638935fbbaffected
  • d519e17e2d01a0ee9abe083019532061b4438065 to < 1d6d9b5b1b95bfeccb84386a51b7e6c510ec13b2affected
  • d519e17e2d01a0ee9abe083019532061b4438065 to < a699781c79ecf6cfe67fb00a0331b4088c7c8466affected

Linux Linux

Default version status: affected

  • 2.6.33affected
  • 0 to < 2.6.33unaffected
  • 5.4.283 to ≤ 5.4.*unaffected
  • 5.10.225 to ≤ 5.10.*unaffected
  • 5.15.166 to ≤ 5.15.*unaffected
  • 6.1.108 to ≤ 6.1.*unaffected
  • 6.6.49 to ≤ 6.6.*unaffected
  • 6.10.8 to ≤ 6.10.*unaffected
  • 6.11 to ≤ *unaffected

References