CVE-2022-49147 The advisory has been revoked - it doesn't affect any version of package kernel-64k-debug-devel-matched (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL9-KERNEL64KDEBUGDEVELMATCHED-9076187
- published5 Mar 2025
- disclosed26 Feb 2025
Introduced: 26 Feb 2025
CVE-2022-49147 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-64k-debug-devel-matched package and not the kernel-64k-debug-devel-matched package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
block: Fix the maximum minor value is blk_alloc_ext_minor()
ida_alloc_range(..., min, max, ...) returns values from min to max, inclusive.
So, NR_EXT_DEVT is a valid idx returned by blk_alloc_ext_minor().
This is an issue because in device_add_disk(), this value is used in: ddev->devt = MKDEV(disk->major, disk->first_minor); and NR_EXT_DEVT is '(1 << MINORBITS)'.
So, should 'disk->first_minor' be NR_EXT_DEVT, it would overflow.
References
- https://access.redhat.com/security/cve/CVE-2022-49147
- https://git.kernel.org/stable/c/0f8cf8f5ccbad25ed6828875b222dbab29d5c272
- https://git.kernel.org/stable/c/5b9ac3727e4abb11c9cfbe9c0781fc05dfdd7cfb
- https://git.kernel.org/stable/c/d1868328dec5ae2cf210111025fcbc71f78dd5ca
- https://git.kernel.org/stable/c/fbe2cc4525480ddd20c866bb5c0578071e01451a