ieee802154/adf7242: defer destroy_workqueue call
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: ieee802154/adf7242: defer destroy_workqueue call There is a possible race condition (use-after-free) like below (FREE) | (USE) adf7242_remove | adf7242_channel cancel_delayed_work_sync | destroy_workqueue (1) | adf7242_cmd_rx | mod_delayed_work (2) | The root cause for this race is that the upper layer (ieee802154) is unaware of this detaching event and the function adf7242_channel can be called without any checks. To fix this, we can add a flag write at the beginning of adf7242_remove and add flag check in adf7242_channel. Or we can just defer the destructive operation like other commit 3e0588c291d6 ("hamradio: defer ax25 kfree after unregister_netdev") which let the ieee802154_unregister_hw() to handle the synchronization. This patch takes the second option. runs")
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.17.19 to before 4.18 | 4.18 | Patch available | CNA |
| Linux | Linux | 4.18 and later | 4.19.258, 5.4.213, 5.10.142, 5.15.66, 5.19.8, 6.0 | Patch available | CNA |
- Linux VendorLinux Affected 4.17.19 to before 4.18 Fixed in 4.18 Patch available CNA
- Linux VendorLinux Affected 4.18 and later Fixed in 4.19.258, 5.4.213, 5.10.142, 5.15.66, 5.19.8, 6.0 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.17.19 to before 4.18; 4.18.1 to before 4.19.258; 4.20 to before 5.4.213; 5.5 to before 5.10.142; 5.11 to before 5.15.66; 5.16 to before 5.19.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.18:-:*:*:*:*:*:* | 4.18 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.18:rc6:*:*:*:*:*:* | 4.18 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.18:rc7:*:*:*:*:*:* | 4.18 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.18:rc8:*:*:*:*:*:* | 4.18 rc8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* | 6.0 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* | 6.0 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* | 6.0 rc3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.17.19 to before 4.18; 4.18.1 to before 4.19.258; 4.20 to before 5.4.213; 5.5 to before 5.10.142; 5.11 to before 5.15.66; 5.16 to before 5.19.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.18:-:*:*:*:*:*:* Versions 4.18 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.18:rc6:*:*:*:*:*:* Versions 4.18 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.18:rc7:*:*:*:*:*:* Versions 4.18 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.18:rc8:*:*:*:*:*:* Versions 4.18 rc8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* Versions 6.0 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* Versions 6.0 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* Versions 6.0 rc3 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.18
- Fix · CNA Linux (Linux) Fixed in 4.19.258, 5.4.213, 5.10.142, 5.15.66, 5.19.8, 6.0
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2022-49968
- 2026-10-03 Alias added: GHSA-c2cg-7w87-rjjv
- 2026-11-07 Affected versions changed · Red Hat
References
Patch 6
- https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c
- https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008
- https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271
- https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485
- https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6
- https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf
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- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2022-49968 · CVE Program
- CVE-2022-49968 · NVD
- FIRST EPSS
- GHSA-c2cg-7w87-rjjv · GitHub Advisory Database · CC BY 4.0
- CVE-2022-49968 · Red Hat security data · CC BY 4.0
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