wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup()
Published May 27, 2026
7.8
HIGHCVSS 3.1
EPSS 0.17%
Description
The mwifiex_adapter_cleanup() function uses timer_delete() (non-synchronous) for the wakeup_timer before the adapter structure is freed. This is incorrect because timer_delete() does not wait for any running timer callback to complete.
If the wakeup_timer callback (wakeup_timer_fn) is executing when mwifiex_adapter_cleanup() is called, the callback will continue to access adapter fields (adapter->hw_status, adapter->if_ops.card_reset, etc.) which may be freed by mwifiex_free_adapter() called later in the mwifiex_remove_card() path.
Use timer_delete_sync() instead to ensure any running timer callback has completed before returning.
Affected products
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- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
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- Version 4.0StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<4.0
- Version 5.10.259StatusunaffectedConstraints<=5.10.*
- Version 5.15.210StatusunaffectedConstraints<=5.15.*
- Version 6.1.176StatusunaffectedConstraints<=6.1.*
- Version 6.12.86StatusunaffectedConstraints<=6.12.*
- Version 6.18.27StatusunaffectedConstraints<=6.18.*
- Version 6.6.140StatusunaffectedConstraints<=6.6.*
- Version 7.0.4StatusunaffectedConstraints<=7.0.*
- Version 7.1StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
| |||||||||||||||||||||||||||||||||
| Linux | Linux | affected |
|
- ≥ 4.0 · < 5.10.259
- ≥ 5.11 · < 5.15.210
- ≥ 5.16 · < 6.1.176
- ≥ 6.2 · < 6.6.140
- ≥ 6.7 · < 6.12.86
- ≥ 6.13 · < 6.18.27
- ≥ 6.19 · < 7.0.4
No data.
Red Hat Enterprise Linux 10
kernel
Affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Affected
Red Hat Enterprise Linux 8
kernel-rt
Affected
Red Hat Enterprise Linux 9
kernel
Affected
Red Hat Enterprise Linux 9
kernel-rt
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (13)
- https://access.redhat.com/security/cve/CVE-2026-46069 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2482116 Issue Tracking
- https://git.kernel.org/stable/c/030abbae49cf9fd1fba7aa08e15ec81efbeb78cf Patch
- https://git.kernel.org/stable/c/11869ce402d95519d49b25a2a97741f68d69d103 Patch
- https://git.kernel.org/stable/c/1958a92599b2653d730ccb6f5685fc3fbed21812 Patch
- https://git.kernel.org/stable/c/4e179a60a60c0a5aea245e8e67768343c0f070b8 Patch
- https://git.kernel.org/stable/c/63fe3389b3e092d6c0eeea9fc0318e7918b16618 Patch
- https://git.kernel.org/stable/c/a88f5391dc68f78cae5eb6a8cd341cafee795d3d Patch
- https://git.kernel.org/stable/c/ae5e95d4157481693be2317e3ffcd84e36010cbb Patch
- https://git.kernel.org/stable/c/c3508895450cca4aeaf5dbadbb5e582363005264 Patch
- https://lore.kernel.org/linux-cve-announce/2026052757-CVE-2026-46069-b583@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-46069
- https://www.cve.org/CVERecord?id=CVE-2026-46069
Change history (0)
No recorded changes yet.