Riskcovery

CVE-2024-50298

net: enetc: allocate vf_state during PF probes

State
Published
Severity
5.5 Medium
Published
Nov 19, 2024
Updated
Oct 15, 2026
Reserved
Oct 21, 2024

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

net: enetc: allocate vf_state during PF probes

In the previous implementation, vf_state is allocated memory only when VF is enabled. However, net_device_ops::ndo_set_vf_mac() may be called before VF is enabled to configure the MAC address of VF. If this is the case, enetc_pf_set_vf_mac() will access vf_state, resulting in access to a null pointer. The simplified error log is as follows.

root@ls1028ardb:~# ip link set eno0 vf 1 mac 00:0c:e7:66:77:89 [ 173.543315] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004 [ 173.637254] pc : enetc_pf_set_vf_mac+0x3c/0x80 Message from sy [ 173.641973] lr : do_setlink+0x4a8/0xec8 [ 173.732292] Call trace: [ 173.734740] enetc_pf_set_vf_mac+0x3c/0x80 [ 173.738847] __rtnl_newlink+0x530/0x89c [ 173.742692] rtnl_newlink+0x50/0x7c [ 173.746189] rtnetlink_rcv_msg+0x128/0x390 [ 173.750298] netlink_rcv_skb+0x60/0x130 [ 173.754145] rtnetlink_rcv+0x18/0x24 [ 173.757731] netlink_unicast+0x318/0x380 [ 173.761665] netlink_sendmsg+0x17c/0x3c8

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

Affected Products

ProductVersions
LinuxLinux
  • d4fd0404c1c95b17880f254ebfee3485693fa8ba to before 35668e29e979b3a1927d3959cdd87327afd8e5ebAffected
  • d4fd0404c1c95b17880f254ebfee3485693fa8ba to before ef0edfbe9eeed1fccad7cb705648af5222664944Affected
  • d4fd0404c1c95b17880f254ebfee3485693fa8ba to before 7eb923f8d4819737c07d6a8d0daef0a4d7f99e0cAffected
  • d4fd0404c1c95b17880f254ebfee3485693fa8ba to before e15c5506dd39885cd047f811a64240e2e8ab401bAffected
LinuxLinux
  • 5.1Affected
  • before 5.1Not affected
  • 6.1.167 through 6.1.*Not affected
  • 6.6.61 through 6.6.*Not affected
  • 6.11.8 through 6.11.*Not affected
  • 6.12 and laterNot affected

References

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