CVE-2020-29369
published 2020-11-28CVE-2020-29369: An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and…
PriorityP430high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
EPSS
0.45%
37.0th percentile
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.7.17-1 (bookworm) | linux 5.7.17-1 (bookworm) |
| linux | linux_kernel | >= 0 < 5.7.17-1 | 5.7.17-1 |
| linux | linux_kernel | >= 0 < 5.7.17-1 | 5.7.17-1 |
| linux | linux_kernel | >= 0 < 5.7.17-1 | 5.7.17-1 |
| linux | linux_kernel | >= 0 < 5.7.17-1 | 5.7.17-1 |
| linux | linux_kernel | >= 4.20 < 5.4.54 | 5.4.54 |
| linux | linux_kernel | >= 5.5 < 5.7.11 | 5.7.11 |
| msrc | cm1_kernel_5.4.91-1_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.06.9MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C
osv7.0HIGH
vendor_debian7.0HIGH
vendor_msrc7.0HIGH
vendor_redhat7.0HIGH
vendor_ubuntu5.4MEDIUM
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Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2021-02-25·CVSS 5.4
CVE-2020-27152 [MEDIUM] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered
that legacy pairing and secure-connections pairing authentication in the
Bluetooth protocol could allow an unauthenticated user to complete
authentication without pairing credentials via adjacent access. A
physically proximate attacker could use this to impersonate a previously
paired Bluetooth device. (CVE-2020-10135)
Jay Shin discovered that the ext4 file system implementation in the Linux
kernel did not properly handle directory access with broken indexing,
leading to an out-of-bounds read vulnerability. A local attacker could use
this to cause a denial of service (system crash). (CVE-2020-14314)
It was di
Microsoft
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations
vendor_msrc·2020-11-10·CVSS 7.0
CVE-2020-29369 [HIGH] CWE-362 An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call aka CID-246c320a8cfe.
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 publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional p
Red Hat
kernel: race condition between expand_downwards and expand_upwards and page-table free operations from an munmap call
vendor_redhat·2020-07-24·CVSS 7.0
CVE-2020-29369 [HIGH] CWE-366 kernel: race condition between expand_downwards and expand_upwards and page-table free operations from an munmap call
kernel: race condition between expand_downwards and expand_upwards and page-table free operations from an munmap call
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
A flaw was found in the Linux kernel. A race condition between certain expand functions and page-table free operations from an munmap call leading to ... FIXME. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Mitigation: There is no mitigation available at this time. Red Hat is investigating a kpatch as an option to fix this issue on kpatch supported streams.
Packa
Debian
CVE-2020-29369: linux - An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is...
vendor_debian·2020·CVSS 7.0
CVE-2020-29369 [HIGH] CVE-2020-29369: linux - An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is...
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
Scope: local
bookworm: resolved (fixed in 5.7.17-1)
bullseye: resolved (fixed in 5.7.17-1)
forky: resolved (fixed in 5.7.17-1)
sid: resolved (fixed in 5.7.17-1)
trixie: resolved (fixed in 5.7.17-1)
GHSA
GHSA-rp7p-r22g-55vr: An issue was discovered in mm/mmap
ghsa_unreviewed·2022-05-24
CVE-2020-29369 [HIGH] CWE-362 GHSA-rp7p-r22g-55vr: An issue was discovered in mm/mmap
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
OSV
linux-oem-5.6 vulnerabilities
osv·2021-02-25·CVSS 5.4
CVE-2020-10135 [MEDIUM] linux-oem-5.6 vulnerabilities
linux-oem-5.6 vulnerabilities
Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered
that legacy pairing and secure-connections pairing authentication in the
Bluetooth protocol could allow an unauthenticated user to complete
authentication without pairing credentials via adjacent access. A
physically proximate attacker could use this to impersonate a previously
paired Bluetooth device. (CVE-2020-10135)
Jay Shin discovered that the ext4 file system implementation in the Linux
kernel did not properly handle directory access with broken indexing,
leading to an out-of-bounds read vulnerability. A local attacker could use
this to cause a denial of service (system crash). (CVE-2020-14314)
It was discovered that the block layer implementation in the Linux kernel
did not prope
OSV
CVE-2020-29369: An issue was discovered in mm/mmap
osv·2020-11-28·CVSS 7.0
CVE-2020-29369 [HIGH] CVE-2020-29369: An issue was discovered in mm/mmap
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
No detection rules found.
No public exploits indexed.
http://www.openwall.com/lists/oss-security/2021/02/10/6http://www.openwall.com/lists/oss-security/2021/02/19/8https://bugs.chromium.org/p/project-zero/issues/detail?id=2056https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4chttps://security.netapp.com/advisory/ntap-20210115-0001/http://www.openwall.com/lists/oss-security/2021/02/10/6http://www.openwall.com/lists/oss-security/2021/02/19/8https://bugs.chromium.org/p/project-zero/issues/detail?id=2056https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4chttps://security.netapp.com/advisory/ntap-20210115-0001/
2020-11-28
Published