CVE-2022-50498
MediumIn the Linux kernel, the following vulnerability has been resolved: eth: alx: take rtnl_lock on resume Zbynek reports that alx trips an rtnl assertion on resume: RTNL: assertion failed at net/core/dev.c (2891) RIP: 0010:netif_set_real_num_tx_queues+0x1ac/0x1c0 Call Trace: <TASK> __alx_open+0x230/0x570 [alx] alx_resume+0x54/0x80 [alx] ? pci_legacy_resume+0x80/0x80 dpm_run_callback+0x4a/0x150 device_resume+0x8b/0x190 async_resume+0x19/0x30 async_run_entry_fn+0x30/0x130 process_one_work+0x1e5/0x3b0 indeed the driver does not hold rtnl_lock during its internal close and re-open functions during suspend/resume. Note that this is not a huge bug as the driver implements its own locking, and does not implement changing the number of queues, but we need to silence the splat.
CVSS 3.1 score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected versions
Linux kernel versions
5.14
and later are affected. Fixed in
5.15.75,
5.19.17,
6.0.3,
6.1
and their respective stable series.
References
The following references provide additional information about CVE-2022-50498 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/6ad1c94e1e7e374d88f0cfd77936dddb8339aaba
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PatchKernel patch commithttps://git.kernel.org/stable/c/6f1991a940b90753b34570f093a21dba366e8cc0
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PatchKernel patch commithttps://git.kernel.org/stable/c/a845a0c4bdece2c0073ecea2fca7c4d5f0550f78
Frequently asked questions
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What is CVE-2022-50498?
CVE-2022-50498 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.14 onward and has been patched in 5.15.75, 5.19.17, 6.0.3 and others. CVE-2022-50498 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2022-50498?
CVE-2022-50498 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2022-50498?
Yes — CVE-2022-50498 has been patched. Fixed versions include 5.15.75, 5.19.17, 6.0.3 and others. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-50498 actively exploited?
No — CVE-2022-50498 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.