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ethtool: check device is present when getting link settings

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2024-46679

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2024-46679

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "d519e17e2d01a0ee9abe083019532061b4438065",
        "lessThan": "ec7b4f7f644018ac293cb1b02528a40a32917e62",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d519e17e2d01a0ee9abe083019532061b4438065",
        "lessThan": "842a40c7273ba1c1cb30dda50405b328de1d860e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d519e17e2d01a0ee9abe083019532061b4438065",
        "lessThan": "7a8d98b6d6484d3ad358510366022da080c37cbc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d519e17e2d01a0ee9abe083019532061b4438065",
        "lessThan": "9bba5955eed160102114d4cc00c3d399be9bdae4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d519e17e2d01a0ee9abe083019532061b4438065",
        "lessThan": "94ab317024ba373d37340893d1c0358638935fbb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d519e17e2d01a0ee9abe083019532061b4438065",
        "lessThan": "1d6d9b5b1b95bfeccb84386a51b7e6c510ec13b2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d519e17e2d01a0ee9abe083019532061b4438065",
        "lessThan": "a699781c79ecf6cfe67fb00a0331b4088c7c8466",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/core/net-sysfs.c",
      "net/ethtool/ioctl.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.33"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.33",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.4.283",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.225",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.166",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.108",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.49",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.10.8",
        "versionType": "semver",
        "lessThanOrEqual": "6.10.*"
      },
      {
        "status": "unaffected",
        "version": "6.11",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/core/net-sysfs.c",
      "net/ethtool/ioctl.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-46679

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#26714 · Revision 1
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