CVE-2019-20054
published 2019-12-28CVE-2019-20054: In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka…
PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.48%
38.1th percentile
In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.2.6-1 (bookworm) | linux 5.2.6-1 (bookworm) |
| linux | linux_kernel | < 5.0.6 | 5.0.6 |
| linux | linux_kernel | >= 0 < 5.2.6-1 | 5.2.6-1 |
| linux | linux_kernel | >= 0 < 5.2.6-1 | 5.2.6-1 |
| linux | linux_kernel | >= 0 < 5.2.6-1 | 5.2.6-1 |
| linux | linux_kernel | >= 0 < 5.2.6-1 | 5.2.6-1 |
| netapp | e-series_santricity_os_controller | 11.0 – 11.70.2 | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-jgf2-2xcw-5gxx: In the Linux kernel before 5
ghsa_unreviewed·2022-05-24
CVE-2019-20054 [MEDIUM] CWE-476 GHSA-jgf2-2xcw-5gxx: In the Linux kernel before 5
In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.
OSV
CVE-2019-20054: In the Linux kernel before 5
osv·2019-12-28·CVSS 5.5
CVE-2019-20054 [MEDIUM] CVE-2019-20054: In the Linux kernel before 5
In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.
Red Hat
kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c
vendor_redhat·2019-12-28·CVSS 5.5
CVE-2019-20054 [MEDIUM] CWE-119 kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c
kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c
In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.
A flaw was found in the Linux kernel’s implementation of dropping sysctl entries. A local attacker who has access to load modules on the system can trigger a condition during module load failure and panic the system.
Package: kernel (Red Hat Enterprise Linux 5) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel-rt (Red Hat Enterprise MRG 2) - Fix deferred
Debian
CVE-2019-20054: linux - In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sy...
vendor_debian·2019·CVSS 5.5
CVE-2019-20054 [MEDIUM] CVE-2019-20054: linux - In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sy...
In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.
Scope: local
bookworm: resolved (fixed in 5.2.6-1)
bullseye: resolved (fixed in 5.2.6-1)
forky: resolved (fixed in 5.2.6-1)
sid: resolved (fixed in 5.2.6-1)
trixie: resolved (fixed in 5.2.6-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-20054 kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c
bugzilla·2020-01-11·CVSS 5.5
CVE-2019-20054 [MEDIUM] CVE-2019-20054 kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c
CVE-2019-20054 kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c
A flaw was found in the Linux kernels implementation of dropping sysctl entries. The case where insert_header() fails the parent pointer may still be set to null and then accessed.
This operation is usually invoked during a module load (a local, privileged operation) and requires a failure mode to take place. It is unlikely to be able to be used successfully as an attack vector.
Upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=23da9588037ecdd4901db76a5b79a42b529c4ec3
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89189557b47b35683a27c80ee78aef18248eefb4
References:
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan
Bugzilla
CVE-2019-20054 kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c [fedora-all]
bugzilla·2020-01-11·CVSS 5.5
CVE-2019-20054 [MEDIUM] CVE-2019-20054 kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c [fedora-all]
CVE-2019-20054 kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c [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 affe
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlhttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=23da9588037ecdd4901db76a5b79a42b529c4ec3https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89189557b47b35683a27c80ee78aef18248eefb4https://security.netapp.com/advisory/ntap-20200204-0002/http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlhttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=23da9588037ecdd4901db76a5b79a42b529c4ec3https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89189557b47b35683a27c80ee78aef18248eefb4https://security.netapp.com/advisory/ntap-20200204-0002/
2019-12-28
Published