CVE-2021-47483
published 2024-05-22CVE-2021-47483: In the Linux kernel, the following vulnerability has been resolved: regmap: Fix possible double-free in regcache_rbtree_exit() In…
PriorityP336high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.23%
13.8th percentile
In the Linux kernel, the following vulnerability has been resolved:
regmap: Fix possible double-free in regcache_rbtree_exit()
In regcache_rbtree_insert_to_block(), when 'present' realloc failed,
the 'blk' which is supposed to assign to 'rbnode->block' will be freed,
so 'rbnode->block' points a freed memory, in the error handling path of
regcache_rbtree_init(), 'rbnode->block' will be freed again in
regcache_rbtree_exit(), KASAN will report double-free as follows:
BUG: KASAN: double-free or invalid-free in kfree+0xce/0x390
Call Trace:
slab_free_freelist_hook+0x10d/0x240
kfree+0xce/0x390
regcache_rbtree_exit+0x15d/0x1a0
regcache_rbtree_init+0x224/0x2c0
regcache_init+0x88d/0x1310
__regmap_init+0x3151/0x4a80
__devm_regmap_init+0x7d/0x100
madera_spi_probe+0x10f/0x333 [madera_spi]
spi_probe+0x183/0x210
really_probe+0x285/0xc30
To fix this, moving up the assignment of rbnode->block to immediately after
the reallocation has succeeded so that the data structure stays valid even
if the second reallocation fails.
Affected
24 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.15.3-1 (bookworm) | linux 5.15.3-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < e72dce9afbdbfa70d9b44f5908a50ff6c4858999 | e72dce9afbdbfa70d9b44f5908a50ff6c4858999 |
| linux | linux | >= 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < fc081477b47dfc3a6cb50a96087fc29674013fc2 | fc081477b47dfc3a6cb50a96087fc29674013fc2 |
| linux | linux | >= 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 758ced2c3878ff789801e6fee808e185c5cf08d6 | 758ced2c3878ff789801e6fee808e185c5cf08d6 |
| linux | linux | >= 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 3dae1a4eced3ee733d7222e69b8a55caf2d61091 | 3dae1a4eced3ee733d7222e69b8a55caf2d61091 |
| linux | linux | >= 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 1cead23c1c0bc766dacb900a3b0269f651ad596f | 1cead23c1c0bc766dacb900a3b0269f651ad596f |
| linux | linux | >= 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 36e911a16b377bde0ad91a8c679069d0d310b1a6 | 36e911a16b377bde0ad91a8c679069d0d310b1a6 |
| linux | linux | >= 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 50cc1462a668dc62949a1127388bc3af785ce047 | 50cc1462a668dc62949a1127388bc3af785ce047 |
| linux | linux | >= 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 55e6d8037805b3400096d621091dfbf713f97e83 | 55e6d8037805b3400096d621091dfbf713f97e83 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.84-1 | 5.10.84-1 |
| linux | linux_kernel | >= 0 < 5.15.3-1 | 5.15.3-1 |
| linux | linux_kernel | >= 0 < 5.15.3-1 | 5.15.3-1 |
| linux | linux_kernel | >= 0 < 5.15.3-1 | 5.15.3-1 |
| linux | linux_kernel | >= 0 < 3.13.0-205.256 | 3.13.0-205.256 |
| linux | linux_kernel | >= 0 < 4.4.0-267.301 | 4.4.0-267.301 |
| linux | linux_kernel | >= 3.12 < 4.4.291 | 4.4.291 |
| linux | linux_kernel | >= 4.10 < 4.14.254 | 4.14.254 |
| linux | linux_kernel | >= 4.15 < 4.19.215 | 4.19.215 |
| linux | linux_kernel | >= 4.20 < 5.4.157 | 5.4.157 |
| linux | linux_kernel | >= 4.5 < 4.9.289 | 4.9.289 |
| linux | linux_kernel | >= 5.11 < 5.14.16 | 5.14.16 |
| linux | linux_kernel | >= 5.5 < 5.10.77 | 5.10.77 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu5.5MEDIUM
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OSV
linux-fips vulnerabilities
osv·2025-04-09·CVSS 5.5
[MEDIUM] linux-fips vulnerabilities
linux-fips vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Drivers core;
- HID subsystem;
- Network drivers;
- SCSI subsystem;
- SuperH / SH-Mobile drivers;
- File systems infrastructure;
- Ext4 file system;
- JFS file system;
- Network file system (NFS) client;
- Memory management;
- Network namespace;
- CAIF protocol;
- Networking core;
- HSR network protocol;
- IPv4 networking;
- IPv6 networking;
- MAC80211 subsystem;
- Network traffic control;
(CVE-2025-21702, CVE-2024-53227, CVE-2024-46826, CVE-2024-49952,
CVE-2024-56600, CVE-2021-47235, CVE-2024-50265, CVE-2021-47119,
CVE-2024-53165, CVE-2021-47483, CVE-2024-50302, CVE-2024-56595,
CVE-
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
osv·2025-04-09·CVSS 5.5
[MEDIUM] linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Drivers core;
- HID subsystem;
- Network drivers;
- SCSI subsystem;
- SuperH / SH-Mobile drivers;
- File systems infrastructure;
- Ext4 file system;
- JFS file system;
- Network file system (NFS) client;
- Memory management;
- Network namespace;
- CAIF protocol;
- Networking core;
- HSR network protocol;
- IPv4 networking;
- IPv6 networking;
- MAC80211 subsystem;
- Network traffic control;
(CVE-2025-21702, CVE-2024-53227, CVE-2024-46826, CVE-2024-49952,
CVE-2024-56600, CVE-2021-47235, CVE-2024-50265, CVE-2021-47119,
CVE-2024-53165, CVE-2021-47483, C
OSV
linux vulnerabilities
osv·2025-04-03·CVSS 5.5
CVE-2024-56658 [MEDIUM] linux vulnerabilities
linux vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Drivers core;
- Ext4 file system;
- JFS file system;
- Network namespace;
- CAIF protocol;
- Networking core;
- IPv6 networking;
(CVE-2024-56658, CVE-2021-47119, CVE-2024-56600, CVE-2021-47122,
CVE-2021-47483, CVE-2024-56595)
OSV
CVE-2021-47483: In the Linux kernel, the following vulnerability has been resolved: regmap: Fix possible double-free in regcache_rbtree_exit() In regcache_rbtree_inse
osv·2024-05-22·CVSS 7.8
CVE-2021-47483 [HIGH] CVE-2021-47483: In the Linux kernel, the following vulnerability has been resolved: regmap: Fix possible double-free in regcache_rbtree_exit() In regcache_rbtree_inse
In the Linux kernel, the following vulnerability has been resolved: regmap: Fix possible double-free in regcache_rbtree_exit() In regcache_rbtree_insert_to_block(), when 'present' realloc failed, the 'blk' which is supposed to assign to 'rbnode->block' will be freed, so 'rbnode->block' points a freed memory, in the error handling path of regcache_rbtree_init(), 'rbnode->block' will be freed again in regcache_rbtree_exit(), KASAN will report double-free as follows: BUG: KASAN: double-free or invalid-free in kfree+0xce/0x390 Call Trace: slab_free_freelist_hook+0x10d/0x240 kfree+0xce/0x390 regcache_rbtree_exit+0x15d/0x1a0 regcache_rbtree_init+0x224/0x2c0 regcache_init+0x88d/0x1310 __regmap_init+0x3151/0x4a80 __devm_regmap_init+0x7d/0x100 madera_spi_probe+0x10f/0x333 [madera_spi] spi_probe+0x1
GHSA
GHSA-76m2-73wx-8hj7: In the Linux kernel, the following vulnerability has been resolved:
regmap: Fix possible double-free in regcache_rbtree_exit()
In regcache_rbtree_in
ghsa_unreviewed·2024-05-22
CVE-2021-47483 [HIGH] CWE-415 GHSA-76m2-73wx-8hj7: In the Linux kernel, the following vulnerability has been resolved:
regmap: Fix possible double-free in regcache_rbtree_exit()
In regcache_rbtree_in
In the Linux kernel, the following vulnerability has been resolved:
regmap: Fix possible double-free in regcache_rbtree_exit()
In regcache_rbtree_insert_to_block(), when 'present' realloc failed,
the 'blk' which is supposed to assign to 'rbnode->block' will be freed,
so 'rbnode->block' points a freed memory, in the error handling path of
regcache_rbtree_init(), 'rbnode->block' will be freed again in
regcache_rbtree_exit(), KASAN will report double-free as follows:
BUG: KASAN: double-free or invalid-free in kfree+0xce/0x390
Call Trace:
slab_free_freelist_hook+0x10d/0x240
kfree+0xce/0x390
regcache_rbtree_exit+0x15d/0x1a0
regcache_rbtree_init+0x224/0x2c0
regcache_init+0x88d/0x1310
__regmap_init+0x3151/0x4a80
__devm_regmap_init+0x7d/0x100
madera_spi_probe+0x10f/0x333 [madera_spi]
spi_probe+
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-04-09·CVSS 5.5
CVE-2024-50302 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Drivers core;
- HID subsystem;
- Network drivers;
- SCSI subsystem;
- SuperH / SH-Mobile drivers;
- File systems infrastructure;
- Ext4 file system;
- JFS file system;
- Network file system (NFS) client;
- Memory management;
- Network namespace;
- CAIF protocol;
- Networking core;
- HSR network protocol;
- IPv4 networking;
- IPv6 networking;
- MAC80211 subsystem;
- Network traffic control;
(CVE-2025-21702, CVE-2024-53227, CVE-2024-46826, CVE-2024-49952,
CVE-2024-56600, CVE-2021-47235, CVE-2024-50265, CVE-2021-
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2025-04-09·CVSS 5.5
CVE-2024-50302 [MEDIUM] Linux kernel (FIPS) vulnerabilities
Title: Linux kernel (FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Drivers core;
- HID subsystem;
- Network drivers;
- SCSI subsystem;
- SuperH / SH-Mobile drivers;
- File systems infrastructure;
- Ext4 file system;
- JFS file system;
- Network file system (NFS) client;
- Memory management;
- Network namespace;
- CAIF protocol;
- Networking core;
- HSR network protocol;
- IPv4 networking;
- IPv6 networking;
- MAC80211 subsystem;
- Network traffic control;
(CVE-2025-21702, CVE-2024-53227, CVE-2024-46826, CVE-2024-49952,
CVE-2024-56600, CVE-2021-47235, CVE-2024-50265, CV
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-04-03·CVSS 5.5
CVE-2021-47119 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Drivers core;
- Ext4 file system;
- JFS file system;
- Network namespace;
- CAIF protocol;
- Networking core;
- IPv6 networking;
(CVE-2024-56658, CVE-2021-47119, CVE-2024-56600, CVE-2021-47122,
CVE-2021-47483, CVE-2024-56595)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modu
Red Hat
kernel: regmap: Fix possible double-free in regcache_rbtree_exit()
vendor_redhat·2024-05-22·CVSS 7.8
CVE-2021-47483 [HIGH] CWE-415 kernel: regmap: Fix possible double-free in regcache_rbtree_exit()
kernel: regmap: Fix possible double-free in regcache_rbtree_exit()
In the Linux kernel, the following vulnerability has been resolved:
regmap: Fix possible double-free in regcache_rbtree_exit()
In regcache_rbtree_insert_to_block(), when 'present' realloc failed,
the 'blk' which is supposed to assign to 'rbnode->block' will be freed,
so 'rbnode->block' points a freed memory, in the error handling path of
regcache_rbtree_init(), 'rbnode->block' will be freed again in
regcache_rbtree_exit(), KASAN will report double-free as follows:
BUG: KASAN: double-free or invalid-free in kfree+0xce/0x390
Call Trace:
slab_free_freelist_hook+0x10d/0x240
kfree+0xce/0x390
regcache_rbtree_exit+0x15d/0x1a0
regcache_rbtree_init+0x224/0x2c0
regcache_init+0x88d/0x1310
__regmap_init+0x3151/0x4a80
__devm_regmap_ini
Debian
CVE-2021-47483: linux - In the Linux kernel, the following vulnerability has been resolved: regmap: Fix...
vendor_debian·2021·CVSS 7.8
CVE-2021-47483 [HIGH] CVE-2021-47483: linux - In the Linux kernel, the following vulnerability has been resolved: regmap: Fix...
In the Linux kernel, the following vulnerability has been resolved: regmap: Fix possible double-free in regcache_rbtree_exit() In regcache_rbtree_insert_to_block(), when 'present' realloc failed, the 'blk' which is supposed to assign to 'rbnode->block' will be freed, so 'rbnode->block' points a freed memory, in the error handling path of regcache_rbtree_init(), 'rbnode->block' will be freed again in regcache_rbtree_exit(), KASAN will report double-free as follows: BUG: KASAN: double-free or invalid-free in kfree+0xce/0x390 Call Trace: slab_free_freelist_hook+0x10d/0x240 kfree+0xce/0x390 regcache_rbtree_exit+0x15d/0x1a0 regcache_rbtree_init+0x224/0x2c0 regcache_init+0x88d/0x1310 __regmap_init+0x3151/0x4a80 __devm_regmap_init+0x7d/0x100 madera_spi_probe+0x10f/0x333 [madera_spi] spi_probe+0x1
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/1cead23c1c0bc766dacb900a3b0269f651ad596fhttps://git.kernel.org/stable/c/36e911a16b377bde0ad91a8c679069d0d310b1a6https://git.kernel.org/stable/c/3dae1a4eced3ee733d7222e69b8a55caf2d61091https://git.kernel.org/stable/c/50cc1462a668dc62949a1127388bc3af785ce047https://git.kernel.org/stable/c/55e6d8037805b3400096d621091dfbf713f97e83https://git.kernel.org/stable/c/758ced2c3878ff789801e6fee808e185c5cf08d6https://git.kernel.org/stable/c/e72dce9afbdbfa70d9b44f5908a50ff6c4858999https://git.kernel.org/stable/c/fc081477b47dfc3a6cb50a96087fc29674013fc2https://git.kernel.org/stable/c/1cead23c1c0bc766dacb900a3b0269f651ad596fhttps://git.kernel.org/stable/c/36e911a16b377bde0ad91a8c679069d0d310b1a6https://git.kernel.org/stable/c/3dae1a4eced3ee733d7222e69b8a55caf2d61091https://git.kernel.org/stable/c/50cc1462a668dc62949a1127388bc3af785ce047https://git.kernel.org/stable/c/55e6d8037805b3400096d621091dfbf713f97e83https://git.kernel.org/stable/c/758ced2c3878ff789801e6fee808e185c5cf08d6https://git.kernel.org/stable/c/e72dce9afbdbfa70d9b44f5908a50ff6c4858999https://git.kernel.org/stable/c/fc081477b47dfc3a6cb50a96087fc29674013fc2
2024-05-22
Published