CVE-2020-10732
published 2020-06-12CVE-2020-10732: A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and…
PriorityP419medium4.4CVSS 3.1
AVLACLPRLUINSUCLINAL
EPSS
0.62%
45.6th percentile
A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data.
Affected
24 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | linux | < linux 5.6.14-2 (bookworm) | linux 5.6.14-2 (bookworm) |
| android | — | — | |
| linux | linux_kernel | < 3.16.85 | 3.16.85 |
| linux | linux_kernel | >= 0 < 5.6.14-2 | 5.6.14-2 |
| linux | linux_kernel | >= 0 < 5.6.14-2 | 5.6.14-2 |
| linux | linux_kernel | >= 0 < 5.6.14-2 | 5.6.14-2 |
| linux | linux_kernel | >= 0 < 5.6.14-2 | 5.6.14-2 |
| linux | linux_kernel | >= 0 < 4.4.0-186.216 | 4.4.0-186.216 |
| linux | linux_kernel | >= 0 < 4.15.0-115.116 | 4.15.0-115.116 |
| linux | linux_kernel | >= 0 < 5.4.0-40.44 | 5.4.0-40.44 |
| linux | linux_kernel | >= 4.14 < 4.14.183 | 4.14.183 |
| linux | linux_kernel | >= 4.19 < 4.19.126 | 4.19.126 |
| linux | linux_kernel | >= 4.4 < 4.4.226 | 4.4.226 |
| linux | linux_kernel | >= 4.9 < 4.9.226 | 4.9.226 |
| linux | linux_kernel | >= 5.4 < 5.4.44 | 5.4.44 |
| linux | linux_kernel | >= 5.6 < 5.6.16 | 5.6.16 |
| linux_kernel | kernel | — | — |
| netapp | active_iq_unified_manager | >= 9.5 | — |
| opensuse | leap | — | — |
| opensuse | leap | — | — |
CVSS provenance
nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
nvdv2.03.6LOWAV:L/AC:L/Au:N/C:P/I:N/A:P
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian3.3LOW
vendor_redhat3.3LOW
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GHSA
GHSA-rfhv-v778-g5c3: A flaw was found in the Linux kernel's implementation of Userspace core dumps
ghsa_unreviewed·2022-05-24
CVE-2020-10732 [LOW] CWE-200 GHSA-rfhv-v778-g5c3: A flaw was found in the Linux kernel's implementation of Userspace core dumps
A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data.
OSV
CVE-2020-10732: In fill_thread_core_info of binfmt_elf
osv·2021-01-01
CVE-2020-10732 CVE-2020-10732: In fill_thread_core_info of binfmt_elf
In fill_thread_core_info of binfmt_elf.c, there is a possible leak of kernel heap memory due to uninitialized data. This could lead to local information disclosure to an application core dump with no additional execution privileges needed. User interaction is not needed for exploitation.
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
osv·2020-09-03·CVSS 7.8
CVE-2018-20669 [HIGH] linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
Timothy Michaud discovered that the i915 graphics driver in the Linux
kernel did not properly validate user memory locations for the
i915_gem_execbuffer2_ioctl. A local attacker could possibly use this to
cause a denial of service or execute arbitrary code. (CVE-2018-20669)
It was discovered that the Kvaser CAN/USB driver in the Linux kernel did
not properly initialize memory in certain situations. A local attacker
could possibly use this to expose sensitive information (kernel memory).
(CVE-2019-19947)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not
OSV
linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities
osv·2020-07-31·CVSS 4.1
CVE-2019-16089 [MEDIUM] linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities
linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
local attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-19462)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximat
OSV
linux-gke-5.0, linux-oem-osp1 vulnerabilities
osv·2020-07-27·CVSS 4.1
CVE-2019-16089 [MEDIUM] linux-gke-5.0, linux-oem-osp1 vulnerabilities
linux-gke-5.0, linux-oem-osp1 vulnerabilities
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly validate file system metadata in some situations.
An attacker could use this to construct a malicious btrfs image that, when
mounted, could cause a denial of service (system crash). (CVE-2019-19036)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
local attacker could possibly use this to cause a denial o
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities
osv·2020-07-27·CVSS 4.6
CVE-2019-19947 [MEDIUM] linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities
It was discovered that the Kvaser CAN/USB driver in the Linux kernel did
not properly initialize memory in certain situations. A local attacker
could possibly use this to expose sensitive information (kernel memory).
(CVE-2019-19947)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2019-20810)
Jason A. Donenfeld discovered that the ACPI implementation in the Linux
kernel did not properly restrict loading SSDT code from an EFI variable. A
privileged attacker could use this to bypass Secure Boot lockdown
OSV
linux, linux-aws, inux-azure, linux-gcp, linux-kvm, linux-oracle, linux-raspi, linux-riscv vulnerabilities
osv·2020-07-06·CVSS 5.9
CVE-2020-10732 [MEDIUM] linux, linux-aws, inux-azure, linux-gcp, linux-kvm, linux-oracle, linux-raspi, linux-riscv vulnerabilities
linux, linux-aws, inux-azure, linux-gcp, linux-kvm, linux-oracle, linux-raspi, linux-riscv vulnerabilities
It was discovered that the elf handling code in the Linux kernel did not
initialize memory before using it in certain situations. A local attacker
could use this to possibly expose sensitive information (kernel memory).
(CVE-2020-10732)
Matthew Sheets discovered that the SELinux network label handling
implementation in the Linux kernel could be coerced into de-referencing a
NULL pointer. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2020-10711)
It was discovered that the SCSI generic (sg) driver in the Linux kernel did
not properly handle certain error conditions correctly. A local privileged
attacker could use this to cause a denial of service
OSV
CVE-2020-10732: A flaw was found in the Linux kernel's implementation of Userspace core dumps
osv·2020-06-12·CVSS 4.4
CVE-2020-10732 [MEDIUM] CVE-2020-10732: A flaw was found in the Linux kernel's implementation of Userspace core dumps
A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data.
Android
CVE-2020-10732: ELF core dumps
vendor_android·2021-01-01·CVSS 3.3
CVE-2020-10732 [LOW] CVE-2020-10732: ELF core dumps
Android Security Bulletin 2021-01-01
CVE: CVE-2020-10732
Severity: HIGH
Type: ID
Component: ELF core dumps
References: A-170658976
Upstream kernel
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-09-03·CVSS 7.8
CVE-2018-20669 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Timothy Michaud discovered that the i915 graphics driver in the Linux
kernel did not properly validate user memory locations for the
i915_gem_execbuffer2_ioctl. A local attacker could possibly use this to
cause a denial of service or execute arbitrary code. (CVE-2018-20669)
It was discovered that the Kvaser CAN/USB driver in the Linux kernel did
not properly initialize memory in certain situations. A local attacker
could possibly use this to expose sensitive information (kernel memory).
(CVE-2019-19947)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use t
Ubuntu
linux kernel vulnerabilities
vendor_ubuntu·2020-07-31·CVSS 4.1
CVE-2019-16089 [MEDIUM] linux kernel vulnerabilities
Title: linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
local attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-19462)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use this to caus
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-07-27·CVSS 4.1
CVE-2019-12380 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly validate file system metadata in some situations.
An attacker could use this to construct a malicious btrfs image that, when
mounted, could cause a denial of service (system crash). (CVE-2019-19036)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
lo
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-07-27·CVSS 4.6
CVE-2020-10768 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Kvaser CAN/USB driver in the Linux kernel did
not properly initialize memory in certain situations. A local attacker
could possibly use this to expose sensitive information (kernel memory).
(CVE-2019-19947)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2019-20810)
Jason A. Donenfeld discovered that the ACPI implementation in the Linux
kernel did not properly restrict loading SSDT code from an EFI variable. A
privileged attacker could use this to bypass Secure Boot
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-07-06·CVSS 5.9
CVE-2020-13143 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the elf handling code in the Linux kernel did not
initialize memory before using it in certain situations. A local attacker
could use this to possibly expose sensitive information (kernel memory).
(CVE-2020-10732)
Matthew Sheets discovered that the SELinux network label handling
implementation in the Linux kernel could be coerced into de-referencing a
NULL pointer. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2020-10711)
It was discovered that the SCSI generic (sg) driver in the Linux kernel did
not properly handle certain error conditions correctly. A local privileged
attacker could use this to cause a denial of service (syst
Red Hat
kernel: uninitialized kernel data leak in userspace coredumps
vendor_redhat·2020-05-01·CVSS 3.3
CVE-2020-10732 [LOW] CWE-908 kernel: uninitialized kernel data leak in userspace coredumps
kernel: uninitialized kernel data leak in userspace coredumps
A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data.
A flaw was found in the Linux kernel’s implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data.
Mitigation: Possible mitigation would be to disable core dumps system-wide by setting:
* hard core 0
In the /etc/security/limits.conf file and restarting applications/services/processes which users may have access to or simply reboot the system. This disables core dumps which may not be a suitable workaround in your environment.
Package: kernel (Re
Debian
CVE-2020-10732: linux - A flaw was found in the Linux kernel's implementation of Userspace core dumps. T...
vendor_debian·2020·CVSS 3.3
CVE-2020-10732 [LOW] CVE-2020-10732: linux - A flaw was found in the Linux kernel's implementation of Userspace core dumps. T...
A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data.
Scope: local
bookworm: resolved (fixed in 5.6.14-2)
bullseye: resolved (fixed in 5.6.14-2)
forky: resolved (fixed in 5.6.14-2)
sid: resolved (fixed in 5.6.14-2)
trixie: resolved (fixed in 5.6.14-2)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-10732 kernel: uninitialized kernel data leak in userspace coredumps [fedora-all]
bugzilla·2020-05-06·CVSS 3.3
CVE-2020-10732 [LOW] CVE-2020-10732 kernel: uninitialized kernel data leak in userspace coredumps [fedora-all]
CVE-2020-10732 kernel: uninitialized kernel data leak in userspace coredumps [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple suppor
Bugzilla
CVE-2020-10732 kernel: uninitialized kernel data leak in userspace coredumps
bugzilla·2020-05-05·CVSS 3.3
CVE-2020-10732 [LOW] CVE-2020-10732 kernel: uninitialized kernel data leak in userspace coredumps
CVE-2020-10732 kernel: uninitialized kernel data leak in userspace coredumps
A flaw was found in the Linux kernel implementation of userspace core dumps. This flaw allows anyone with access to core dumps to see a small amount of private kernel data about the current running kernels internal state which could be used to further allow an attack to more reliably execute. This information could be user processes or kernel state from previous executions.
References:
https://github.com/google/kmsan/issues/76
https://twitter.com/grsecurity/status/1252558055629299712
https://github.com/ruscur/linux/commit/a95cdec9fa0c08e6eeb410d461c03af8fd1fef0a
Discussion:
This flaw is rated as moderate, it can be a pretty useful information leak to defeat kaslr and
also be leveraged as part of another attac
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10732https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=aca969cacf07f41070d788ce2b8ca71f09d5207dhttps://github.com/google/kmsan/issues/76https://github.com/ruscur/linux/commit/a95cdec9fa0c08e6eeb410d461c03af8fd1fef0ahttps://lore.kernel.org/lkml/CAG_fn=VZZ7yUxtOGzuTLkr7wmfXWtKK9BHHYawj=rt9XWnCYvg%40mail.gmail.com/https://security.netapp.com/advisory/ntap-20210129-0005/https://twitter.com/grsecurity/status/1252558055629299712https://usn.ubuntu.com/4411-1/https://usn.ubuntu.com/4427-1/https://usn.ubuntu.com/4439-1/https://usn.ubuntu.com/4440-1/https://usn.ubuntu.com/4485-1/http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10732https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=aca969cacf07f41070d788ce2b8ca71f09d5207dhttps://github.com/google/kmsan/issues/76https://github.com/ruscur/linux/commit/a95cdec9fa0c08e6eeb410d461c03af8fd1fef0ahttps://lore.kernel.org/lkml/CAG_fn=VZZ7yUxtOGzuTLkr7wmfXWtKK9BHHYawj=rt9XWnCYvg%40mail.gmail.com/https://security.netapp.com/advisory/ntap-20210129-0005/https://twitter.com/grsecurity/status/1252558055629299712https://usn.ubuntu.com/4411-1/https://usn.ubuntu.com/4427-1/https://usn.ubuntu.com/4439-1/https://usn.ubuntu.com/4440-1/https://usn.ubuntu.com/4485-1/
2020-06-12
Published