CVE-2022-49147
published 2025-02-26CVE-2022-49147: 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…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.26%
17.2th percentile
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 first_minor' be NR_EXT_DEVT, it would overflow.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.17.3-1 (bookworm) | linux 5.17.3-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 22ae8ce8b89241c94ac00c237752c0ffa37ba5ae < 5b9ac3727e4abb11c9cfbe9c0781fc05dfdd7cfb | 5b9ac3727e4abb11c9cfbe9c0781fc05dfdd7cfb |
| linux | linux | >= 22ae8ce8b89241c94ac00c237752c0ffa37ba5ae < 0f8cf8f5ccbad25ed6828875b222dbab29d5c272 | 0f8cf8f5ccbad25ed6828875b222dbab29d5c272 |
| linux | linux | >= 22ae8ce8b89241c94ac00c237752c0ffa37ba5ae < fbe2cc4525480ddd20c866bb5c0578071e01451a | fbe2cc4525480ddd20c866bb5c0578071e01451a |
| linux | linux | >= 22ae8ce8b89241c94ac00c237752c0ffa37ba5ae < d1868328dec5ae2cf210111025fcbc71f78dd5ca | d1868328dec5ae2cf210111025fcbc71f78dd5ca |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 5.11 < 5.15.33 | 5.15.33 |
| linux | linux_kernel | >= 5.16 < 5.16.19 | 5.16.19 |
| linux | linux_kernel | >= 5.17 < 5.17.2 | 5.17.2 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
kernel: block: Fix the maximum minor value is blk_alloc_ext_minor()
vendor_redhat·2025-02-26·CVSS 5.5
CVE-2022-49147 [MEDIUM] kernel: block: Fix the maximum minor value is blk_alloc_ext_minor()
kernel: block: Fix the maximum minor value is blk_alloc_ext_minor()
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 first_minor' be NR_EXT_DEVT, it would overflow.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Out of support scope
Package: kernel-rt (Red Hat Enterprise Linux 7) - Out of support scope
Debian
CVE-2022-49147: linux - In the Linux kernel, the following vulnerability has been resolved: block: Fix ...
vendor_debian·2022·CVSS 5.5
CVE-2022-49147 [MEDIUM] CVE-2022-49147: linux - In the Linux kernel, the following vulnerability has been resolved: block: Fix ...
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 first_minor' be NR_EXT_DEVT, it would overflow.
Scope: local
bookworm: resolved (fixed in 5.17.3-1)
bullseye: resolved
forky: resolved (fixed in 5.17.3-1)
sid: resolved (fixed in 5.17.3-1)
trixie: resolved (fixed in 5.17.3-1)
GHSA
GHSA-3mph-xfrg-5928: In the Linux kernel, the following vulnerability has been resolved:
block: Fix the maximum minor value is blk_alloc_ext_minor()
ida_alloc_range(
ghsa_unreviewed·2025-10-15
CVE-2022-49147 [MEDIUM] GHSA-3mph-xfrg-5928: In the Linux kernel, the following vulnerability has been resolved:
block: Fix the maximum minor value is blk_alloc_ext_minor()
ida_alloc_range(
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 first_minor' be NR_EXT_DEVT, it would overflow.
OSV
CVE-2022-49147: In the Linux kernel, the following vulnerability has been resolved: block: Fix the maximum minor value is blk_alloc_ext_minor() ida_alloc_range(
osv·2025-02-26·CVSS 5.5
CVE-2022-49147 [MEDIUM] CVE-2022-49147: In the Linux kernel, the following vulnerability has been resolved: block: Fix the maximum minor value is blk_alloc_ext_minor() ida_alloc_range(
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 first_minor' be NR_EXT_DEVT, it would overflow.
No detection rules found.
No public exploits indexed.
2025-02-26
Published