CVE-2020-15437
published 2020-11-23CVE-2020-15437: The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows…
PriorityP412medium4.4CVSS 3.1
AVLACLPRHUINSUCNINAH
EPSS
0.43%
35.4th percentile
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.
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 | < 5.8 | 5.8 |
| linux | linux_kernel | — | — |
| 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 |
| msrc | cm1_kernel_5.4.91-1_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
osv5.4MEDIUM
vendor_ubuntu5.4MEDIUM
vendor_debian4.4MEDIUM
vendor_msrc4.4MEDIUM
vendor_redhat4.4MEDIUM
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GHSA
GHSA-mx68-p244-fggc: The Linux kernel before version 5
ghsa_unreviewed·2022-05-24
CVE-2020-15437 [MEDIUM] CWE-476 GHSA-mx68-p244-fggc: The Linux kernel before version 5
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.
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-2020-15437: The Linux kernel before version 5
osv·2020-11-23·CVSS 4.4
CVE-2020-15437 [MEDIUM] CVE-2020-15437: The Linux kernel before version 5
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.
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
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service
vendor_msrc·2020-11-10·CVSS 4.4
CVE-2020-15437 [MEDIUM] CWE-476 The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.
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
Red Hat
kernel: NULL pointer dereference in serial8250_isa_init_ports function in drivers/tty/serial/8250/8250_core.c
vendor_redhat·2020-07-21·CVSS 4.4
CVE-2020-15437 [MEDIUM] CWE-476 kernel: NULL pointer dereference in serial8250_isa_init_ports function in drivers/tty/serial/8250/8250_core.c
kernel: NULL pointer dereference in serial8250_isa_init_ports function in drivers/tty/serial/8250/8250_core.c
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.
A NULL pointer dereference flaw was found in the Linux kernel’s UART 8250 functionality, in the way certain hardware architectures handled situations where default ports (0x2E8, 0x2F8, 0x3E8, 0x3F8) are not available. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.
Statement: This flaw is rated as having a Moderate impact because the issue can only be trigg
Debian
CVE-2020-15437: linux - The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference ...
vendor_debian·2020·CVSS 4.4
CVE-2020-15437 [MEDIUM] CVE-2020-15437: linux - The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference ...
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.
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)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2020-11-23
Published