ethtool: check device is present when getting link settings
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.
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
- Added to Heist Feed
- Publisher date