CVE-2021-43057
published 2021-10-28CVE-2021-43057: An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.47%
38.6th percentile
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.14.9-1 (bookworm) | linux 5.14.9-1 (bookworm) |
| linux | linux_kernel | >= 0 < 5.14.9-1 | 5.14.9-1 |
| linux | linux_kernel | >= 0 < 5.14.9-1 | 5.14.9-1 |
| linux | linux_kernel | >= 0 < 5.14.9-1 | 5.14.9-1 |
| linux | linux_kernel | >= 5.13 < 5.14.8 | 5.14.8 |
| msrc | cbl2_kernel_5.15.2.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cm1_kernel_5.10.78.1-2_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
osv7.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu3.3LOW
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Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2021-11-30·CVSS 3.3
CVE-2021-3655 [LOW] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ilja Van Sprundel discovered that the SCTP implementation in the Linux
kernel did not properly perform size validations on incoming packets in
some situations. An attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2021-3655)
It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in
the Linux kernel did not properly deallocate memory in some error
conditions. A local attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2021-3744, CVE-2021-3764)
It was discovered that the Aspeed Low Pin Count (LPC) Bus Controller
implementation in the Linux kernel did not properly perform boundary checks
in some situations, allow
Microsoft
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corr
vendor_msrc·2021-10-12·CVSS 7.8
CVE-2021-43057 [HIGH] CWE-416 An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corr
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publ
Red Hat
kernel: use-after-free in the SELinux handler for PTRACE_TRACEME
vendor_redhat·2021-09-23·CVSS 7.8
CVE-2021-43057 [HIGH] CWE-416 kernel: use-after-free in the SELinux handler for PTRACE_TRACEME
kernel: use-after-free in the SELinux handler for PTRACE_TRACEME
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.
A use-after-free read flaw was found in selinux_ptrace_traceme in security/selinux/hooks.c in SELinux handler for PTRACE_TRACEME in the Linux kernel. In this flaw, an attempt to access the subjective credentials of another task may cause memory corruption by a user with local access and escalate privileges.
Statement: The affected code was not introduced into any kernel versions shipped
Debian
CVE-2021-43057: linux - An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in s...
vendor_debian·2021·CVSS 7.8
CVE-2021-43057 [HIGH] CVE-2021-43057: linux - An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in s...
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.
Scope: local
bookworm: resolved (fixed in 5.14.9-1)
bullseye: resolved
forky: resolved (fixed in 5.14.9-1)
sid: resolved (fixed in 5.14.9-1)
trixie: resolved (fixed in 5.14.9-1)
GHSA
GHSA-h3xq-35q6-gh9g: An issue was discovered in the Linux kernel before 5
ghsa_unreviewed·2022-05-24
CVE-2021-43057 [HIGH] CWE-416 GHSA-h3xq-35q6-gh9g: An issue was discovered in the Linux kernel before 5
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.
OSV
linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem-5.13, linux-oracle, linux-raspi vulnerabilities
osv·2021-11-30·CVSS 3.3
CVE-2021-3655 [LOW] linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem-5.13, linux-oracle, linux-raspi vulnerabilities
linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem-5.13, linux-oracle, linux-raspi vulnerabilities
Ilja Van Sprundel discovered that the SCTP implementation in the Linux
kernel did not properly perform size validations on incoming packets in
some situations. An attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2021-3655)
It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in
the Linux kernel did not properly deallocate memory in some error
conditions. A local attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2021-3744, CVE-2021-3764)
It was discovered that the Aspeed Low Pin Count (LPC) Bus Controller
implementation in the Linux kernel did not properly perform boundary checks
in some situatio
OSV
CVE-2021-43057: An issue was discovered in the Linux kernel before 5
osv·2021-10-28·CVSS 7.8
CVE-2021-43057 [HIGH] CVE-2021-43057: An issue was discovered in the Linux kernel before 5
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugs.chromium.org/p/project-zero/issues/detail?id=2229https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.8https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a3727a8bac0a9e77c70820655fd8715523ba3db7https://security.netapp.com/advisory/ntap-20211125-0001/https://bugs.chromium.org/p/project-zero/issues/detail?id=2229https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.8https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a3727a8bac0a9e77c70820655fd8715523ba3db7https://security.netapp.com/advisory/ntap-20211125-0001/
2021-10-28
Published