CVE-2026-72042
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ipmi: Fix user refcount underflow in event delivery
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| b52da4054ee0bf9ecb44996f2c83236ff50b3812 | affected | git | ddbb6e3dc9bb4743de686aa1598c31e745cee76b | Unavailable | None listed |
| b52da4054ee0bf9ecb44996f2c83236ff50b3812 | affected | git | 7be349d4fcc5e065295b83418a22d27a68afbdb6 | Unavailable | None listed |
| b52da4054ee0bf9ecb44996f2c83236ff50b3812 | affected | git | 6aa9e61c46465d231e9beddf56af7effd71be682 | Unavailable | None listed |
| f63723ca7d7623f9dae1990973cd158671f03c56 | affected | git | Unavailable | Unavailable | None listed |
| 348121b29594d42d1635648fd3ed31dfa25351d5 | affected | git | Unavailable | Unavailable | None listed |
| 53d6e403affbf6df2c859a0ea00ccfc1e72090ca | affected | git | Unavailable | Unavailable | None listed |
| 0ed73be9a2547ffb9b5c1d879ad9bfab73d920b5 | affected | git | Unavailable | Unavailable | None listed |
| 6.1.157 | affected | semver | 6.2 | Unavailable | None listed |
| 6.6.113 | affected | semver | 6.7 | Unavailable | None listed |
| 6.12.54 | affected | semver | 6.13 | Unavailable | None listed |
| 6.17.4 | affected | semver | 6.18 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.18 | Unavailable | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |