CVE-2026-72042: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: ipmi: Fix user refcount underflow in event delivery ipmi_alloc_recv_msg(user) takes the temporary user reference owned by the receive message, and ipmi_free_recv_msg() drops it again. If event delivery fails after allocating receive messages for earlier users, handle_read_event_rsp() rolls those messages back with ipmi_free_recv_msg(). That rollback path still drops user->refcount explicitly after freeing each message. The extra put can free a user that remains linked on intf->users, so later event delivery may dereference a freed user or trip refcount_t's addition-on-zero warning when ipmi_alloc_recv_msg() tries to acquire another reference. Remove the stale explicit put and the now-dead user assignment. Keep the list_del() and ipmi_free_recv_msg() calls; they are the required rollback operations.

Засегнати продукти

• Linux Linux: b52da4054ee0bf9ecb44996f2c83236ff50b3812 преди ddbb6e3dc9bb4743de686aa1598c31e745cee76b; b52da4054ee0bf9ecb44996f2c83236ff50b3812 преди 7be349d4fcc5e065295b83418a22d27a68afbdb6; b52da4054ee0bf9ecb44996f2c83236ff50b3812 преди 6aa9e61c46465d231e9beddf56af7effd71be682; f63723ca7d7623f9dae1990973cd158671f03c56; 348121b29594d42d1635648fd3ed31dfa25351d5; 53d6e403affbf6df2c859a0ea00ccfc1e72090ca; 0ed73be9a2547ffb9b5c1d879ad9bfab73d920b5; 6.1.157 преди 6.2; 6.6.113 преди 6.7; 6.12.54 преди 6.13; 6.17.4 преди 6.18
• Linux Linux: 6.18; преди 6.18; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-72042
• https://nvd.nist.gov/vuln/detail/CVE-2026-72042
• https://git.kernel.org/stable/c/ddbb6e3dc9bb4743de686aa1598c31e745cee76b
• https://git.kernel.org/stable/c/7be349d4fcc5e065295b83418a22d27a68afbdb6
• https://git.kernel.org/stable/c/6aa9e61c46465d231e9beddf56af7effd71be682