CVE-2021-46966
published 2024-02-27CVE-2021-46966: In the Linux kernel, the following vulnerability has been resolved: ACPI: custom_method: fix potential use-after-free issue In cm_write(), buf is always freed…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.23%
13.9th percentile
In the Linux kernel, the following vulnerability has been resolved:
ACPI: custom_method: fix potential use-after-free issue
In cm_write(), buf is always freed when reaching the end of the
function. If the requested count is less than table.length, the
allocated buffer will be freed but subsequent calls to cm_write() will
still try to access it.
Remove the unconditional kfree(buf) at the end of the function and
set the buf to NULL in the -EINVAL error path to match the rest of
function.
Affected
32 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.10.38-1 (bookworm) | linux 5.10.38-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 03d1571d9513369c17e6848476763ebbd10ec2cb < 72814a94c38a33239793f7622cec6ace1e540c4b | 72814a94c38a33239793f7622cec6ace1e540c4b |
| linux | linux | >= 03d1571d9513369c17e6848476763ebbd10ec2cb < 62dc2440ebb552aa0d7f635e1697e077d9d21203 | 62dc2440ebb552aa0d7f635e1697e077d9d21203 |
| linux | linux | >= 03d1571d9513369c17e6848476763ebbd10ec2cb < f16737caf41fc06cfe6e49048becb09657074d4b | f16737caf41fc06cfe6e49048becb09657074d4b |
| linux | linux | >= 03d1571d9513369c17e6848476763ebbd10ec2cb < b7a5baaae212a686ceb812c32fceed79c03c0234 | b7a5baaae212a686ceb812c32fceed79c03c0234 |
| linux | linux | >= 03d1571d9513369c17e6848476763ebbd10ec2cb < e483bb9a991bdae29a0caa4b3a6d002c968f94aa | e483bb9a991bdae29a0caa4b3a6d002c968f94aa |
| linux | linux | >= 35b88a10535edcf62d3e6b7893a8cd506ff98a24 < 90575d1d9311b753cf1718f4ce9061ddda7dfd23 | 90575d1d9311b753cf1718f4ce9061ddda7dfd23 |
| linux | linux | >= 4.14.147 < 4.14.233 | 4.14.233 |
| linux | linux | >= 4.19.77 < 4.19.191 | 4.19.191 |
| linux | linux | >= 4.4.195 < 4.4.269 | 4.4.269 |
| linux | linux | >= 4.9.195 < 4.9.269 | 4.9.269 |
| linux | linux | >= 4bda2b79a9d04c8ba31681c66e95877dbb433416 < 1d53ca5d131074c925ce38361fb0376d3bf7e394 | 1d53ca5d131074c925ce38361fb0376d3bf7e394 |
| linux | linux | >= 5.2.19 < 5.3 | 5.3 |
| linux | linux | >= 5.3.4 < 5.4 | 5.4 |
| linux | linux | >= 5c12dadcbef8cd55ef1f5dac799bfcbb7ea7db1d < 8b04d57f30caf76649d0567551589af9a66ca9be | 8b04d57f30caf76649d0567551589af9a66ca9be |
| linux | linux | >= e4467fb6ef547aa352dc03397f9474ec84eced5b < a5b26a2e362f572d87e9fd35435680e557052a17 | a5b26a2e362f572d87e9fd35435680e557052a17 |
| linux | linux_kernel | >= 0 < 5.10.38-1 | 5.10.38-1 |
| linux | linux_kernel | >= 0 < 5.10.38-1 | 5.10.38-1 |
| linux | linux_kernel | >= 0 < 5.10.38-1 | 5.10.38-1 |
| linux | linux_kernel | >= 0 < 5.10.38-1 | 5.10.38-1 |
| linux | linux_kernel | >= 0 < 4.4.0-253.287 | 4.4.0-253.287 |
| linux | linux_kernel | >= 4.14.147 < 4.14.233 | 4.14.233 |
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_ubuntu7.0HIGH
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Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-04-19·CVSS 7.0
CVE-2023-1382 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that a race condition existed in the instruction emulator
of the Linux kernel on Arm 64-bit systems. A local attacker could use this
to cause a denial of service (system crash). (CVE-2022-20422)
Wei Chen discovered that a race condition existed in the TIPC protocol
implementation in the Linux kernel, leading to a null pointer dereference
vulnerability. A local attacker could use this to cause a denial of service
(system crash). (CVE-2023-1382)
Jose Oliveira and Rodrigo Branco discovered that the Spectre Variant 2
mitigations with prctl syscall were insufficient in some situations. A
local attacker could possibly use this to expose sensitive information.
(CVE-2023-1998)
Red Hat
kernel: ACPI: custom_method: fix potential use-after-free issue
vendor_redhat·2024-02-27·CVSS 7.8
CVE-2021-46966 [HIGH] CWE-416 kernel: ACPI: custom_method: fix potential use-after-free issue
kernel: ACPI: custom_method: fix potential use-after-free issue
In the Linux kernel, the following vulnerability has been resolved:
ACPI: custom_method: fix potential use-after-free issue
In cm_write(), buf is always freed when reaching the end of the
function. If the requested count is less than table.length, the
allocated buffer will be freed but subsequent calls to cm_write() will
still try to access it.
Remove the unconditional kfree(buf) at the end of the function and
set the buf to NULL in the -EINVAL error path to match the rest of
function.
Statement: No Red Hat Products are affected by this vulnerability.
Package: kernel (Red Hat Enterprise Linux 6) - Out of support scope
Package: kernel (Red Hat Enterprise Linux 7) - Out of support scope
Package: kernel-rt (Red Hat Enterpris
Debian
CVE-2021-46966: linux - In the Linux kernel, the following vulnerability has been resolved: ACPI: custo...
vendor_debian·2021·CVSS 7.8
CVE-2021-46966 [HIGH] CVE-2021-46966: linux - In the Linux kernel, the following vulnerability has been resolved: ACPI: custo...
In the Linux kernel, the following vulnerability has been resolved: ACPI: custom_method: fix potential use-after-free issue In cm_write(), buf is always freed when reaching the end of the function. If the requested count is less than table.length, the allocated buffer will be freed but subsequent calls to cm_write() will still try to access it. Remove the unconditional kfree(buf) at the end of the function and set the buf to NULL in the -EINVAL error path to match the rest of function.
Scope: local
bookworm: resolved (fixed in 5.10.38-1)
bullseye: resolved (fixed in 5.10.38-1)
forky: resolved (fixed in 5.10.38-1)
sid: resolved (fixed in 5.10.38-1)
trixie: resolved (fixed in 5.10.38-1)
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
osv·2024-04-19·CVSS 7.0
CVE-2022-20422 [HIGH] linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
It was discovered that a race condition existed in the instruction emulator
of the Linux kernel on Arm 64-bit systems. A local attacker could use this
to cause a denial of service (system crash). (CVE-2022-20422)
Wei Chen discovered that a race condition existed in the TIPC protocol
implementation in the Linux kernel, leading to a null pointer dereference
vulnerability. A local attacker could use this to cause a denial of service
(system crash). (CVE-2023-1382)
Jose Oliveira and Rodrigo Branco discovered that the Spectre Variant 2
mitigations with prctl syscall were insufficient in some situations. A
local attacker could possibly use this to expose sensitive information.
(CVE-2023-1998)
Daniele Antonioli discovered that the
OSV
CVE-2021-46966: In the Linux kernel, the following vulnerability has been resolved: ACPI: custom_method: fix potential use-after-free issue In cm_write(), buf is alwa
osv·2024-02-27·CVSS 7.8
CVE-2021-46966 [HIGH] CVE-2021-46966: In the Linux kernel, the following vulnerability has been resolved: ACPI: custom_method: fix potential use-after-free issue In cm_write(), buf is alwa
In the Linux kernel, the following vulnerability has been resolved: ACPI: custom_method: fix potential use-after-free issue In cm_write(), buf is always freed when reaching the end of the function. If the requested count is less than table.length, the allocated buffer will be freed but subsequent calls to cm_write() will still try to access it. Remove the unconditional kfree(buf) at the end of the function and set the buf to NULL in the -EINVAL error path to match the rest of function.
GHSA
GHSA-8f8j-69c8-v223: In the Linux kernel, the following vulnerability has been resolved:
ACPI: custom_method: fix potential use-after-free issue
In cm_write(), buf is al
ghsa_unreviewed·2024-02-27
CVE-2021-46966 [HIGH] CWE-416 GHSA-8f8j-69c8-v223: In the Linux kernel, the following vulnerability has been resolved:
ACPI: custom_method: fix potential use-after-free issue
In cm_write(), buf is al
In the Linux kernel, the following vulnerability has been resolved:
ACPI: custom_method: fix potential use-after-free issue
In cm_write(), buf is always freed when reaching the end of the
function. If the requested count is less than table.length, the
allocated buffer will be freed but subsequent calls to cm_write() will
still try to access it.
Remove the unconditional kfree(buf) at the end of the function and
set the buf to NULL in the -EINVAL error path to match the rest of
function.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4bhttps://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9behttps://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aahttps://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4bhttps://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4bhttps://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9behttps://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aahttps://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b
2024-02-27
Published