CVE - CVE-2024-46679

CVE-ID
CVE-2024-46679	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/1d6d9b5b1b95bfeccb84386a51b7e6c510ec13b2 URL:https://git.kernel.org/stable/c/1d6d9b5b1b95bfeccb84386a51b7e6c510ec13b2 MISC:https://git.kernel.org/stable/c/7a8d98b6d6484d3ad358510366022da080c37cbc URL:https://git.kernel.org/stable/c/7a8d98b6d6484d3ad358510366022da080c37cbc MISC:https://git.kernel.org/stable/c/842a40c7273ba1c1cb30dda50405b328de1d860e URL:https://git.kernel.org/stable/c/842a40c7273ba1c1cb30dda50405b328de1d860e MISC:https://git.kernel.org/stable/c/94ab317024ba373d37340893d1c0358638935fbb URL:https://git.kernel.org/stable/c/94ab317024ba373d37340893d1c0358638935fbb MISC:https://git.kernel.org/stable/c/9bba5955eed160102114d4cc00c3d399be9bdae4 URL:https://git.kernel.org/stable/c/9bba5955eed160102114d4cc00c3d399be9bdae4 MISC:https://git.kernel.org/stable/c/a699781c79ecf6cfe67fb00a0331b4088c7c8466 URL:https://git.kernel.org/stable/c/a699781c79ecf6cfe67fb00a0331b4088c7c8466 MISC:https://git.kernel.org/stable/c/ec7b4f7f644018ac293cb1b02528a40a32917e62 URL:https://git.kernel.org/stable/c/ec7b4f7f644018ac293cb1b02528a40a32917e62
Assigning CNA
kernel.org
Date Record Created
20240911	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240911)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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