CVE-2024-46679 (GCVE-0-2024-46679)

Vulnerability from cvelistv5 – Published: 2024-09-13 05:29 – Updated: 2025-11-03 22:16
VLAI?
Title
ethtool: check device is present when getting link settings
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d519e17e2d01a0ee9abe083019532061b4438065 , < ec7b4f7f644018ac293cb1b02528a40a32917e62 (git)
Affected: d519e17e2d01a0ee9abe083019532061b4438065 , < 842a40c7273ba1c1cb30dda50405b328de1d860e (git)
Affected: d519e17e2d01a0ee9abe083019532061b4438065 , < 7a8d98b6d6484d3ad358510366022da080c37cbc (git)
Affected: d519e17e2d01a0ee9abe083019532061b4438065 , < 9bba5955eed160102114d4cc00c3d399be9bdae4 (git)
Affected: d519e17e2d01a0ee9abe083019532061b4438065 , < 94ab317024ba373d37340893d1c0358638935fbb (git)
Affected: d519e17e2d01a0ee9abe083019532061b4438065 , < 1d6d9b5b1b95bfeccb84386a51b7e6c510ec13b2 (git)
Affected: d519e17e2d01a0ee9abe083019532061b4438065 , < a699781c79ecf6cfe67fb00a0331b4088c7c8466 (git)
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    Linux Linux Affected: 2.6.33
Unaffected: 0 , < 2.6.33 (semver)
Unaffected: 5.4.283 , ≤ 5.4.* (semver)
Unaffected: 5.10.225 , ≤ 5.10.* (semver)
Unaffected: 5.15.166 , ≤ 5.15.* (semver)
Unaffected: 6.1.108 , ≤ 6.1.* (semver)
Unaffected: 6.6.49 , ≤ 6.6.* (semver)
Unaffected: 6.10.8 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nethtool: check device is present when getting link settings\n\nA sysfs reader can race with a device reset or removal, attempting to\nread device state when the device is not actually present. eg:\n\n     [exception RIP: qed_get_current_link+17]\n  #8 [ffffb9e4f2907c48] qede_get_link_ksettings at ffffffffc07a994a [qede]\n  #9 [ffffb9e4f2907cd8] __rh_call_get_link_ksettings at ffffffff992b01a3\n #10 [ffffb9e4f2907d38] __ethtool_get_link_ksettings at ffffffff992b04e4\n #11 [ffffb9e4f2907d90] duplex_show at ffffffff99260300\n #12 [ffffb9e4f2907e38] dev_attr_show at ffffffff9905a01c\n #13 [ffffb9e4f2907e50] sysfs_kf_seq_show at ffffffff98e0145b\n #14 [ffffb9e4f2907e68] seq_read at ffffffff98d902e3\n #15 [ffffb9e4f2907ec8] vfs_read at ffffffff98d657d1\n #16 [ffffb9e4f2907f00] ksys_read at ffffffff98d65c3f\n #17 [ffffb9e4f2907f38] do_syscall_64 at ffffffff98a052fb\n\n crash\u003e struct net_device.state ffff9a9d21336000\n    state = 5,\n\nstate 5 is __LINK_STATE_START (0b1) and __LINK_STATE_NOCARRIER (0b100).\nThe device is not present, note lack of __LINK_STATE_PRESENT (0b10).\n\nThis is the same sort of panic as observed in commit 4224cfd7fb65\n(\"net-sysfs: add check for netdevice being present to speed_show\").\n\nThere are many other callers of __ethtool_get_link_ksettings() which\ndon\u0027t have a device presence check.\n\nMove this check into ethtool to protect all callers."
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  [exception RIP: qed_get_current_link+17]\\n  #8 [ffffb9e4f2907c48] qede_get_link_ksettings at ffffffffc07a994a [qede]\\n  #9 [ffffb9e4f2907cd8] __rh_call_get_link_ksettings at ffffffff992b01a3\\n #10 [ffffb9e4f2907d38] __ethtool_get_link_ksettings at ffffffff992b04e4\\n #11 [ffffb9e4f2907d90] duplex_show at ffffffff99260300\\n #12 [ffffb9e4f2907e38] dev_attr_show at ffffffff9905a01c\\n #13 [ffffb9e4f2907e50] sysfs_kf_seq_show at ffffffff98e0145b\\n #14 [ffffb9e4f2907e68] seq_read at ffffffff98d902e3\\n #15 [ffffb9e4f2907ec8] vfs_read at ffffffff98d657d1\\n #16 [ffffb9e4f2907f00] ksys_read at ffffffff98d65c3f\\n #17 [ffffb9e4f2907f38] do_syscall_64 at ffffffff98a052fb\\n\\n crash\u003e struct net_device.state ffff9a9d21336000\\n    state = 5,\\n\\nstate 5 is __LINK_STATE_START (0b1) and __LINK_STATE_NOCARRIER (0b100).\\nThe device is not present, note lack of __LINK_STATE_PRESENT (0b10).\\n\\nThis is the same sort of panic as observed in commit 4224cfd7fb65\\n(\\\"net-sysfs: add check for netdevice being present to speed_show\\\").\\n\\nThere are many other callers of __ethtool_get_link_ksettings() which\\ndon\u0027t have a device presence check.\\n\\nMove this check into ethtool to protect all callers.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-11-05T09:44:31.709Z\"}}}",
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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