Summary
Valentina Palmiotti discovered that the io_uring subsystem in the Linux
kernel could be coerced to free adjacent memory. A local attacker could use
this to execute arbitrary code. (CVE-2021-41073)
Benedict Schlueter discovered that the BPF subsystem in the Linux kernel
did not properly protect against Speculative Store Bypass (SSB) side-
channel attacks in some situations. A local attacker could possibly use
this to expose sensitive information. (CVE-2021-34556)
Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not
properly protect against Speculative Store Bypass (SSB) side-channel
attacks in some situations. A local attacker could possibly use this to
expose sensitive information. (CVE-2021-35477)
Murray McAllister discovered that the joystick device interface in the
Linux kernel did not properly validate data passed via an ioctl(). A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code on systems with a joystick device
registered. (CVE-2021-3612)
It was discovered that the tracing subsystem in the Linux kernel did not
properly keep track of per-cpu ring buffer state. A privileged attacker
could use this to cause a denial of service. (CVE-2021-3679)
It was discovered that the Option USB High Speed Mobile device driver in
the Linux kernel did not properly handle error conditions. A physically
proximate attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2021-37159)
Alois Wohlschlager discovered that the overlay file system in the Linux
kernel did not restrict private clones in some situations. An attacker
could use this to expose sensitive information. (CVE-2021-3732)
It was discovered that the Virtio console implementation in the Linux
kernel did not properly validate input lengths in some situations. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2021-38160)
It was discovered that the BPF subsystem in the Linux kernel contained an
integer overflow in its hash table implementation. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2021-38166)
Michael Wakabayashi discovered that the NFSv4 client implementation in the
Linux kernel did not properly order connection setup operations. An
attacker controlling a remote NFS server could use this to cause a denial
of service on the client. (CVE-2021-38199)
It was discovered that the Sun RPC implementation in the Linux kernel
contained an out-of-bounds access error. A remote attacker could possibly
use this to cause a denial of service (system crash). (CVE-2021-38201)
It was discovered that the NFS server implementation in the Linux kernel
contained an out-of-bounds read when the trace even framework is being used
for nfsd. A remote attacker could possibly use this to cause a denial of
service (system crash). (CVE-2021-38202)
Naohiro Aota discovered that the btrfs file system in the Linux kernel
contained a race condition in situations that triggered allocations of new
system chunks. A local attacker could possibly use this to cause a denial
of service (deadlock). (CVE-2021-38203)
It was discovered that the MAX-3421 host USB device driver in the Linux
kernel did not properly handle device removal events. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2021-38204)
It was discovered that the Xilinx 10/100 Ethernet Lite device driver in the
Linux kernel could report pointer addresses in some situations. An attacker
could use this information to ease the exploitation of another
vulnerability. (CVE-2021-38205)
It was discovered that the ext4 file system in the Linux kernel contained a
race condition when writing xattrs to an inode. A local attacker could use
this to cause a denial of service or possibly gain administrative
privileges. (CVE-2021-40490)
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | linux-oem-5.13 | 5.13.0-1014.18 |
Vulnerabilities 16
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Unscored —
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via…
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Unscored —
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via…
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Unscored —
An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc…
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Unscored —CVE-2021-3679 Public exploit
A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the …
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Unscored —
hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checkin…
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Unscored —
A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with Overlay…
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Unscored —
In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untr…
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Unscored —
In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when m…
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Unscored —
fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators o…
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Unscored —
net/sunrpc/xdr.c in the Linux kernel before 5.13.4 allows remote attackers to cause a denial of service (xdr_set_page_b…
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Unscored —
fs/nfsd/trace.h in the Linux kernel before 5.13.4 might allow remote attackers to cause a denial of service (out-of-bou…
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Unscored —
btrfs in the Linux kernel before 5.13.4 allows attackers to cause a denial of service (deadlock) via processes that tri…
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Unscored —
drivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to cause a denia…
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Unscored —
drivers/net/ethernet/xilinx/xilinx_emaclite.c in the Linux kernel before 5.13.3 makes it easier for attackers to defeat…
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Unscored —
A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux ke…
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Unscored —CVE-2021-41073 Public exploit
loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IO…
References
-
report
https://ubuntu.com/security/CVE-2021-3612
-
report
https://ubuntu.com/security/CVE-2021-3679
-
report
https://ubuntu.com/security/CVE-2021-3732
-
report
https://ubuntu.com/security/CVE-2021-34556
-
report
https://ubuntu.com/security/CVE-2021-35477
-
report
https://ubuntu.com/security/CVE-2021-37159
-
report
https://ubuntu.com/security/CVE-2021-38160
-
report
https://ubuntu.com/security/CVE-2021-38166
-
report
https://ubuntu.com/security/CVE-2021-38199
-
report
https://ubuntu.com/security/CVE-2021-38201
-
report
https://ubuntu.com/security/CVE-2021-38202
-
report
https://ubuntu.com/security/CVE-2021-38203
-
report
https://ubuntu.com/security/CVE-2021-38204
-
report
https://ubuntu.com/security/CVE-2021-38205
-
report
https://ubuntu.com/security/CVE-2021-40490
-
report
https://ubuntu.com/security/CVE-2021-41073