Summary
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 this to cause a denial of service
(memory exhaustion). (CVE-2019-20810)
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)
It was discovered that the Linux kernel did not correctly apply Speculative
Store Bypass Disable (SSBD) mitigations in certain situations. A local
attacker could possibly use this to expose sensitive information.
(CVE-2020-10766)
It was discovered that the Linux kernel did not correctly apply Indirect
Branch Predictor Barrier (IBPB) mitigations in certain situations. A local
attacker could possibly use this to expose sensitive information.
(CVE-2020-10767)
It was discovered that the Linux kernel could incorrectly enable Indirect
Branch Speculation after it has been disabled for a process via a prctl()
call. A local attacker could possibly use this to expose sensitive
information. (CVE-2020-10768)
Luca Bruno discovered that the zram module in the Linux kernel did not
properly restrict unprivileged users from accessing the hot_add sysfs file.
A local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2020-10781)
It was discovered that the XFS file system implementation in the Linux
kernel did not properly validate meta data in some circumstances. An
attacker could use this to construct a malicious XFS image that, when
mounted, could cause a denial of service. (CVE-2020-12655)
It was discovered that the bcache subsystem in the Linux kernel did not
properly release a lock in some error conditions. A local attacker could
possibly use this to cause a denial of service. (CVE-2020-12771)
It was discovered that the Virtual Terminal keyboard driver in the Linux
kernel contained an integer overflow. A local attacker could possibly use
this to have an unspecified impact. (CVE-2020-13974)
Kyungtae Kim discovered that the USB testing driver in the Linux kernel did
not properly deallocate memory on disconnect events. A physically proximate
attacker could use this to cause a denial of service (memory exhaustion).
(CVE-2020-15393)
It was discovered that the NFS server implementation in the Linux kernel
did not properly honor umask settings when setting permissions while
creating file system objects if the underlying file system did not support
ACLs. An attacker could possibly use this to expose sensitive information
or violate system integrity. (CVE-2020-24394)
It was discovered that the Kerberos SUNRPC GSS implementation in the Linux
kernel did not properly deallocate memory on module unload. A local
privileged attacker could possibly use this to cause a denial of service
(memory exhaustion). (CVE-2020-12656)
Fixed packages 16
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 16.04 LTS 16.04:LTS | linux-aws-hwe | 4.15.0-1080.84~16.04.1 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-azure | 4.15.0-1093.103~16.04.1 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-gcp | 4.15.0-1081.92~16.04.1 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-hwe | 4.15.0-115.116~16.04.1 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-oracle | 4.15.0-1051.55~16.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux | 4.15.0-115.116 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-aws | 4.15.0-1080.84 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-azure-4.15 | 4.15.0-1093.103 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gcp-4.15 | 4.15.0-1081.92 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gke-4.15 | 4.15.0-1067.70 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-kvm | 4.15.0-1072.73 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oem | 4.15.0-1094.104 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oracle | 4.15.0-1051.55 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-raspi2 | 4.15.0-1068.72 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-snapdragon | 4.15.0-1084.92 |
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | linux-azure | 4.15.0-1093.103~14.04.1 |
Vulnerabilities 14
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Medium 5.5
A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling al…
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Medium 5.5
A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect Branch Predict…
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Medium 5.5
A flaw was found in the Linux Kernel before 5.8-rc1 in the prctl() function, where it can be used to enable indirect br…
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Medium 5.5
A flaw was found in the Linux Kernel before 5.8-rc6 in the ZRAM kernel module, where a user with a local account and th…
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Low 3.3
A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a loca…
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Unscored —
An issue where a provided address with access_ok() is not checked was discovered in i915_gem_execbuffer2_ioctl in drive…
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Unscored —
In the Linux kernel through 5.4.6, there are information leaks of uninitialized memory to a USB device in the drivers/n…
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Unscored —
go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c in the Linux kernel before 5.6 does not call snd_card_free for…
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Unscored —
An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10. Attackers ma…
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Unscored —
gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel throug…
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Unscored —
An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlo…
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Unscored —
An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer overflow if k_a…
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Unscored —
In the Linux kernel 4.4 through 5.7.6, usbtest_disconnect in drivers/usb/misc/usbtest.c has a memory leak, aka CID-28eb…
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Unscored —
In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem obj…
References
-
report
https://ubuntu.com/security/CVE-2018-20669
-
report
https://ubuntu.com/security/CVE-2019-19947
-
report
https://ubuntu.com/security/CVE-2019-20810
-
report
https://ubuntu.com/security/CVE-2020-10732
-
report
https://ubuntu.com/security/CVE-2020-10766
-
report
https://ubuntu.com/security/CVE-2020-10767
-
report
https://ubuntu.com/security/CVE-2020-10768
-
report
https://ubuntu.com/security/CVE-2020-10781
-
report
https://ubuntu.com/security/CVE-2020-12655
-
report
https://ubuntu.com/security/CVE-2020-12656
-
report
https://ubuntu.com/security/CVE-2020-12771
-
report
https://ubuntu.com/security/CVE-2020-13974
-
report
https://ubuntu.com/security/CVE-2020-15393
-
report
https://ubuntu.com/security/CVE-2020-24394