## Releases
* Ubuntu 18.04 ESM
* Ubuntu 16.04 ESM
* Ubuntu 14.04 ESM
## Packages
* linux \- Linux kernel
* linux-aws \- Linux kernel for Amazon Web Services (AWS) systems
* linux-aws-hwe \- Linux kernel for Amazon Web Services (AWS-HWE) systems
* linux-azure \- Linux kernel for Microsoft Azure Cloud systems
* linux-azure-4.15 \- Linux kernel for Microsoft Azure Cloud systems
* linux-gcp \- Linux kernel for Google Cloud Platform (GCP) systems
* linux-gcp-4.15 \- Linux kernel for Google Cloud Platform (GCP) systems
* linux-gke-4.15 \- Linux kernel for Google Container Engine (GKE) systems
* linux-hwe \- Linux hardware enablement (HWE) kernel
* linux-kvm \- Linux kernel for cloud environments
* linux-oem \- Linux kernel for OEM systems
* linux-oracle \- Linux kernel for Oracle Cloud systems
* linux-raspi2 \- Linux kernel for Raspberry Pi (V8) systems
* linux-snapdragon \- Linux kernel for Qualcomm Snapdragon processors
It was discovered that the AMD Cryptographic Coprocessor device driver in
the Linux kernel did not properly deallocate memory in some situations. A
local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2019-18808)
It was discovered that the Conexant 23885 TV card device driver for the
Linux kernel did not properly deallocate memory in some error conditions. A
local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2019-19054)
It was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel
did not properly deallocate memory in certain error conditions. A local
attacker could use this to cause a denial of service (memory exhaustion).
(CVE-2019-19061)
It was discovered that the AMD Audio Coprocessor driver for the Linux
kernel did not properly deallocate memory in certain error conditions. A
local attacker with the ability to load modules could use this to cause a
denial of service (memory exhaustion). (CVE-2019-19067)
It was discovered that the Atheros HTC based wireless driver in the Linux
kernel did not properly deallocate in certain error conditions. A local
attacker could use this to cause a denial of service (memory exhaustion).
(CVE-2019-19073, CVE-2019-19074)
It was discovered that the F2FS file system in the Linux kernel did not
properly perform bounds checking in some situations, leading to an out-of-
bounds read. A local attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2019-9445)
It was discovered that the VFIO PCI driver in the Linux kernel did not
properly handle attempts to access disabled memory spaces. A local attacker
could use this to cause a denial of service (system crash).
(CVE-2020-12888)
It was discovered that the cgroup v2 subsystem in the Linux kernel did not
properly perform reference counting in some situations, leading to a NULL
pointer dereference. A local attacker could use this to cause a denial of
service or possibly gain administrative privileges. (CVE-2020-14356)
It was discovered that the state of network RNG in the Linux kernel was
potentially observable. A remote attacker could use this to expose
sensitive information. (CVE-2020-16166)
{"cloudfoundry": [{"lastseen": "2023-06-13T16:33:25", "description": "## Severity\n\nMedium\n\n## Vendor\n\nCanonical Ubuntu\n\n## Versions Affected\n\n * Canonical Ubuntu 16.04\n\n## Description\n\nIt was discovered that the AMD Cryptographic Coprocessor device driver in the Linux kernel did not properly deallocate memory in some situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-18808)\n\nIt was discovered that the Conexant 23885 TV card device driver for the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19054)\n\nIt was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19061)\n\nIt was discovered that the AMD Audio Coprocessor driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker with the ability to load modules could use this to cause a denial of service (memory exhaustion). (CVE-2019-19067)\n\nIt was discovered that the Atheros HTC based wireless driver in the Linux kernel did not properly deallocate in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19073, CVE-2019-19074)\n\nIt was discovered that the F2FS file system in the Linux kernel did not properly perform bounds checking in some situations, leading to an out-of- bounds read. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2019-9445)\n\nIt was discovered that the VFIO PCI driver in the Linux kernel did not properly handle attempts to access disabled memory spaces. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-12888)\n\nIt was discovered that the cgroup v2 subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a NULL pointer dereference. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2020-14356)\n\nIt was discovered that the state of network RNG in the Linux kernel was potentially observable. A remote attacker could use this to expose sensitive information. (CVE-2020-16166)\n\nCVEs contained in this USN include: CVE-2019-19061, CVE-2019-19067, CVE-2020-14356, CVE-2019-18808, CVE-2019-19054, CVE-2020-12888, CVE-2020-16166, CVE-2019-19073, CVE-2019-19074, CVE-2019-9445.\n\n## Affected Cloud Foundry Products and Versions\n\n_Severity is medium unless otherwise noted._\n\n * Xenial Stemcells \n * 250.x versions prior to 250.207\n * 315.x versions prior to 315.194\n * 456.x versions prior to 456.121\n * 621.x versions prior to 621.85\n * All other stemcells not listed.\n\n## Mitigation\n\nUsers of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:\n\n * Xenial Stemcells \n * Upgrade 250.x versions to 250.207 or greater\n * Upgrade 315.x versions to 315.194 or greater\n * Upgrade 456.x versions to 456.121 or greater\n * Upgrade 621.x versions to 621.85 or greater\n * All other stemcells should be upgraded to the latest version available on [bosh.io](<https://bosh.io/stemcells>).\n\n## References\n\n * [USN Notice](<https://usn.ubuntu.com/4526-1/>)\n * [CVE-2019-19061](<https://people.canonical.com/~ubuntu-security/cve/CVE-2019-19061>)\n * [CVE-2019-19067](<https://people.canonical.com/~ubuntu-security/cve/CVE-2019-19067>)\n * [CVE-2020-14356](<https://people.canonical.com/~ubuntu-security/cve/CVE-2020-14356>)\n * [CVE-2019-18808](<https://people.canonical.com/~ubuntu-security/cve/CVE-2019-18808>)\n * [CVE-2019-19054](<https://people.canonical.com/~ubuntu-security/cve/CVE-2019-19054>)\n * [CVE-2020-12888](<https://people.canonical.com/~ubuntu-security/cve/CVE-2020-12888>)\n * [CVE-2020-16166](<https://people.canonical.com/~ubuntu-security/cve/CVE-2020-16166>)\n * [CVE-2019-19073](<https://people.canonical.com/~ubuntu-security/cve/CVE-2019-19073>)\n * [CVE-2019-19074](<https://people.canonical.com/~ubuntu-security/cve/CVE-2019-19074>)\n * [CVE-2019-9445](<https://people.canonical.com/~ubuntu-security/cve/CVE-2019-9445>)\n\n## History\n\n2020-11-20: Initial vulnerability report published.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2020-11-19T00:00:00", "type": "cloudfoundry", "title": "USN-4526-1: Linux kernel vulnerabilities | Cloud Foundry", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "COMPLETE", "integrityImpact": "NONE", "baseScore": 7.8, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-18808", "CVE-2019-19054", "CVE-2019-19061", "CVE-2019-19067", "CVE-2019-19073", "CVE-2019-19074", "CVE-2019-9445", "CVE-2020-12888", "CVE-2020-14356", "CVE-2020-16166"], "modified": "2020-11-19T00:00:00", "id": "CFOUNDRY:ABBF4BD74406CA92477E7CFB1AD01190", "href": "https://www.cloudfoundry.org/blog/usn-4526-1/", "cvss": {"score": 7.8, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:C"}}], "nessus": [{"lastseen": "2023-05-18T15:22:56", "description": "The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4526-1 advisory.\n\n - In the Android kernel in F2FS driver there is a possible out of bounds read due to a missing bounds check.\n This could lead to local information disclosure with system execution privileges needed. 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This affects the htc_config_pipe_credits() function, the htc_setup_complete() function, and the htc_connect_service() function, aka CID-853acf7caf10. (CVE-2019-19073)\n\n - A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption), aka CID-728c1e2a05e4.\n (CVE-2019-19074)\n\n - In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out. (CVE-2019-3016)\n\n - In the Android kernel in F2FS driver there is a possible out of bounds read due to a missing bounds check.\n This could lead to local information disclosure with system execution privileges needed. User interaction is not needed for exploitation. (CVE-2019-9445)\n\n - An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10.\n Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767. (CVE-2020-12655)\n\n - In the Linux kernel through 5.7.6, usbtest_disconnect in drivers/usb/misc/usbtest.c has a memory leak, aka CID-28ebeb8db770. 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This could lead to local information disclosure with system execution privileges needed. User interaction is not needed for exploitation. (CVE-2019-9445)\n\n - In the Android kernel in F2FS touch driver there is a possible out of bounds read due to improper input validation. This could lead to local information disclosure with system execution privileges needed. User interaction is not needed for exploitation. (CVE-2019-9453)\n\n - A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b. (CVE-2019-19054)\n\n - Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel through 5.3.11 allow attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout() failures. This affects the htc_config_pipe_credits() function, the htc_setup_complete() function, and the htc_connect_service() function, aka CID-853acf7caf10. 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It is, therefore, affected by multiple\nvulnerabilities as referenced in the ALAS2KERNEL-5.4-2022-014 advisory.\n\n - A memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c in the Linux kernel\n through 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-128c66429247.\n (CVE-2019-18808)\n\n - A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c in the Linux\n kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering\n kfifo_alloc() failures, aka CID-a7b2df76b42b. (CVE-2019-19054)\n\n - A flaw was found in the Linux Kernel before 5.8-rc6 in the ZRAM kernel module, where a user with a local\n account and the ability to read the /sys/class/zram-control/hot_add file can create ZRAM device nodes in\n the /dev/ directory. This read allocates kernel memory and is not accounted for a user that triggers the\n creation of that ZRAM device. With this vulnerability, continually reading the device may consume a large\n amount of system memory and cause the Out-of-Memory (OOM) killer to activate and terminate random\n userspace processes, possibly making the system inoperable. (CVE-2020-10781)\n\n - ** DISPUTED ** gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5\n implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory\n leak. Note: This was disputed with the assertion that the issue does not grant any access not already\n available. It is a problem that on unloading a specific kernel module some memory is leaked, but loading\n kernel modules is a privileged operation. A user could also write a kernel module to consume any amount of\n memory they like and load that replicating the effect of this bug. (CVE-2020-12656)\n\n - In the Linux kernel 4.4 through 5.7.6, usbtest_disconnect in drivers/usb/misc/usbtest.c has a memory leak,\n aka CID-28ebeb8db770. (CVE-2020-15393)\n\n - The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive\n information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to\n drivers/char/random.c and kernel/time/timer.c. 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pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, \"kernel / kernel-debuginfo / kernel-debuginfo-common-x86_64 / etc\");\n}", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-05-18T15:06:00", "description": "The remote OracleVM system is missing necessary patches to address critical security updates :\n\n - uek-rpm: Add OL6 shim conflict for new signing key (Eric Snowberg) [Orabug: 31688239] - Revert 'certs: Add Oracle's new X509 cert into the kernel keyring' (Eric Snowberg) [Orabug: 31688223] - blk-mq: don't overwrite rq->mq_ctx (Jens Axboe) [Orabug: 31457304] - blk-mq:\n mark ctx as pending at batch in flush plug path (Ming Lei) [Orabug: 31457304]\n\n - scsi: qla2xxx: Fix stuck session in GNL (Quinn Tran) [Orabug: 31561461] - scsi: qla2xxx: Serialize session free in qlt_free_session_done (Quinn Tran) [Orabug:\n 31561461] - scsi: qla2xxx: v2: Change abort wait_loop from msleep to wait_event_timeout 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For reference the original advisory text follows.\n\nSeveral vulnerabilities have been discovered in the Linux kernel that may lead to the execution of arbitrary code, privilege escalation, denial of service or information leaks.\n\nCVE-2019-9445\n\nA potential out-of-bounds read was discovered in the F2FS implementation. A user permitted to mount and access arbitrary filesystems could potentially use this to cause a denial of service (crash) or to read sensitive information.\n\nCVE-2019-19073, CVE-2019-19074\n\nNavid Emamdoost discovered potential memory leaks in the ath9k and ath9k_htc drivers. The security impact of these is unclear.\n\nCVE-2019-19448\n\n'Team bobfuzzer' reported a bug in Btrfs that could lead to a use-after-free, and could be triggered by crafted filesystem images. A user permitted to mount and access arbitrary filesystems could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.\n\nCVE-2020-12351\n\nAndy Nguyen discovered a flaw in the Bluetooth implementation in the way L2CAP packets with A2MP CID are handled. A remote attacker within a short distance, knowing the victim's Bluetooth device address, can send a malicious l2cap packet and cause a denial of service or possibly arbitrary code execution with kernel privileges.\n\nCVE-2020-12352\n\nAndy Nguyen discovered a flaw in the Bluetooth implementation. Stack memory is not properly initialised when handling certain AMP packets.\nA remote attacker within a short distance, knowing the victim's Bluetooth device address address, can retrieve kernel stack information.\n\nCVE-2020-12655\n\nZheng Bin reported that crafted XFS volumes could trigger a system hang. An attacker able to mount such a volume could use this to cause a denial of service.\n\nCVE-2020-12771\n\nZhiqiang Liu reported a bug in the bcache block driver that could lead to a system hang. The security impact of this is unclear.\n\nCVE-2020-12888\n\nIt was discovered that the PCIe Virtual Function I/O (vfio-pci) driver allowed users to disable a device's memory space while it was still mapped into a process. On some hardware platforms, local users or guest virtual machines permitted to access PCIe Virtual Functions could use this to cause a denial of service (hardware error and crash).\n\nCVE-2020-14305\n\nVasily Averin of Virtuozzo discovered a potential heap buffer overflow in the netfilter nf_contrack_h323 module. When this module is used to perform connection tracking for TCP/IPv6, a remote attacker could use this to cause a denial of service (crash or memory corruption) or possibly for remote code execution with kernel privilege.\n\nCVE-2020-14314\n\nA bug was discovered in the ext4 filesystem that could lead to an out-of-bound read. A local user permitted to mount and access arbitrary filesystem images could use this to cause a denial of service (crash).\n\nCVE-2020-14331\n\nA bug was discovered in the VGA console driver's soft-scrollback feature that could lead to a heap buffer overflow. On a system with a custom kernel that has CONFIG_VGACON_SOFT_SCROLLBACK enabled, a local user with access to a console could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.\n\nCVE-2020-14356, CVE-2020-25220\n\nA bug was discovered in the cgroup subsystem's handling of socket references to cgroups. In some cgroup configurations, this could lead to a use-after-free. A local user might be able to use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.\n\nThe original fix for this bug introudced a new security issue, which is also addressed in this update.\n\nCVE-2020-14386\n\nOr Cohen discovered a bug in the packet socket (AF_PACKET) implementation which could lead to a heap buffer overflow. A local user with the CAP_NET_RAW capability (in any user namespace) could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.\n\nCVE-2020-14390\n\nMinh Yuan discovered a bug in the framebuffer console driver's scrollback feature that could lead to a heap buffer overflow. On a system using framebuffer consoles, a local user with access to a console could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.\n\nThe scrollback feature has been disabled for now, as no other fix was available for this issue.\n\nCVE-2020-15393\n\nKyungtae Kim reported a memory leak in the usbtest driver. The security impact of this is unclear.\n\nCVE-2020-16166\n\nAmit Klein reported that the random number generator used by the network stack might not be re-seeded for long periods of time, making e.g. client port number allocations more predictable. This made it easier for remote attackers to carry out some network- based attacks such as DNS cache poisoning or device tracking.\n\nCVE-2020-24490\n\nAndy Nguyen discovered a flaw in the Bluetooth implementation that can lead to a heap buffer overflow. On systems with a Bluetooth 5 hardware interface, a remote attacker within a short distance can use this to cause a denial of service (crash or memory corruption) or possibly for remote code execution with kernel privilege.\n\nCVE-2020-25211\n\nA flaw was discovered in netfilter subsystem. A local attacker able to inject conntrack Netlink configuration can cause a denial of service.\n\nCVE-2020-25212\n\nA bug was discovered in the NFSv4 client impleme
Linux kernel vulnerabilities
