rhsa-2024_5673
Vulnerability from csaf_redhat
Published
2024-08-21 00:17
Modified
2024-11-06 06:46
Summary
Red Hat Security Advisory: kernel-rt security update
Notes
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)
* kernel: igc: avoid returning frame twice in XDP_REDIRECT (CVE-2024-26853)
* kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge (CVE-2024-36000)
* kernel: bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself (CVE-2023-52735)
* kernel: net: fix out-of-bounds access in ops_init (CVE-2024-36883)
* kernel: net/mlx5e: Fix netif state handling (CVE-2024-38608)
* kernel: net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc() (CVE-2024-40995)
* kernel: virtio-net: tap: mlx5_core short frame denial of service (CVE-2024-41090)
* kernel: virtio-net: tun: mlx5_core short frame denial of service (CVE-2024-41091)
* kernel: NFSv4: Fix memory leak in nfs4_set_security_label (CVE-2024-41076)
* kernel: ice: Don't process extts if PTP is disabled (CVE-2024-42107)
Bug Fix(es):
* kernel-rt: update RT source tree to the latest RHEL-9.2 ad hoc schedule build (JIRA:RHEL-54222)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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{
"category": "description",
"text": "A flaw was found in the Linux kernel, which involves the improper handling of the efivarfs filesystem when the firmware does not support the SetVariable function at runtime. Specifically, even if efivarfs is initially mounted as read-only (RO), it can be remounted as read-write (RW) without checking if the firmware can handle variable updates. This issue allows operations such as efi-updatevar to be executed, which leads to a crash due to a NULL pointer dereference. This crash occurs because the callback for SetVariable is not assigned, causing a level 0 translation fault.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: efivarfs: force RO when remounting if SetVariable is not supported",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is classified as Moderate severity because it requires specific conditions to be exploited: the system must be using a firmware that does not support the SetVariable function at runtime, and an attacker must have the ability to remount the efivarfs filesystem with read-write permissions. While it does not provide direct unauthorized access or code execution, the resulting crash from a NULL pointer dereference can cause denial of service, disrupting normal system operations. The impact is limited to systems with the specified firmware and does not affect systems where the SetVariable function is properly supported, reducing the overall exposure and potential damage.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-52463"
},
{
"category": "external",
"summary": "RHBZ#2265797",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2265797"
},
{
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"summary": "https://www.cve.org/CVERecord?id=CVE-2023-52463",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-52463"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-52463",
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},
{
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"summary": "https://lore.kernel.org/linux-cve-announce/2024022335-CVE-2023-52463-6195@gregkh/T/#u",
"url": "https://lore.kernel.org/linux-cve-announce/2024022335-CVE-2023-52463-6195@gregkh/T/#u"
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},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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}
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{
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{
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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2024-26853"
},
{
"category": "external",
"summary": "RHBZ#2275748",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2275748"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2024-26853",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-26853"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-26853",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26853"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2024041723-CVE-2024-26853-b549@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2024041723-CVE-2024-26853-b549@gregkh/T"
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{
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"title": "Vulnerability description"
},
{
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"text": "kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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"integrityImpact": "HIGH",
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],
"title": "kernel: net: fix out-of-bounds access in ops_init"
},
{
"cve": "CVE-2024-38608",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"discovery_date": "2024-06-19T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2293356"
}
],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix netif state handling\n\nmlx5e_suspend cleans resources only if netif_device_present() returns\ntrue. However, mlx5e_resume changes the state of netif, via\nmlx5e_nic_enable, only if reg_state == NETREG_REGISTERED.\nIn the below case, the above leads to NULL-ptr Oops[1] and memory\nleaks:\n\nmlx5e_probe\n _mlx5e_resume\n mlx5e_attach_netdev\n mlx5e_nic_enable \u003c-- netdev not reg, not calling netif_device_attach()\n register_netdev \u003c-- failed for some reason.\nERROR_FLOW:\n _mlx5e_suspend \u003c-- netif_device_present return false, resources aren\u0027t freed :(\n\nHence, clean resources in this case as well.\n\n[1]\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nPGD 0 P4D 0\nOops: 0010 [#1] SMP\nCPU: 2 PID: 9345 Comm: test-ovs-ct-gen Not tainted 6.5.0_for_upstream_min_debug_2023_09_05_16_01 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:0x0\nCode: Unable to access opcode bytes at0xffffffffffffffd6.\nRSP: 0018:ffff888178aaf758 EFLAGS: 00010246\nCall Trace:\n \u003cTASK\u003e\n ? __die+0x20/0x60\n ? page_fault_oops+0x14c/0x3c0\n ? exc_page_fault+0x75/0x140\n ? asm_exc_page_fault+0x22/0x30\n notifier_call_chain+0x35/0xb0\n blocking_notifier_call_chain+0x3d/0x60\n mlx5_blocking_notifier_call_chain+0x22/0x30 [mlx5_core]\n mlx5_core_uplink_netdev_event_replay+0x3e/0x60 [mlx5_core]\n mlx5_mdev_netdev_track+0x53/0x60 [mlx5_ib]\n mlx5_ib_roce_init+0xc3/0x340 [mlx5_ib]\n __mlx5_ib_add+0x34/0xd0 [mlx5_ib]\n mlx5r_probe+0xe1/0x210 [mlx5_ib]\n ? auxiliary_match_id+0x6a/0x90\n auxiliary_bus_probe+0x38/0x80\n ? driver_sysfs_add+0x51/0x80\n really_probe+0xc9/0x3e0\n ? driver_probe_device+0x90/0x90\n __driver_probe_device+0x80/0x160\n driver_probe_device+0x1e/0x90\n __device_attach_driver+0x7d/0x100\n bus_for_each_drv+0x80/0xd0\n __device_attach+0xbc/0x1f0\n bus_probe_device+0x86/0xa0\n device_add+0x637/0x840\n __auxiliary_device_add+0x3b/0xa0\n add_adev+0xc9/0x140 [mlx5_core]\n mlx5_rescan_drivers_locked+0x22a/0x310 [mlx5_core]\n mlx5_register_device+0x53/0xa0 [mlx5_core]\n mlx5_init_one_devl_locked+0x5c4/0x9c0 [mlx5_core]\n mlx5_init_one+0x3b/0x60 [mlx5_core]\n probe_one+0x44c/0x730 [mlx5_core]\n local_pci_probe+0x3e/0x90\n pci_device_probe+0xbf/0x210\n ? kernfs_create_link+0x5d/0xa0\n ? sysfs_do_create_link_sd+0x60/0xc0\n really_probe+0xc9/0x3e0\n ? driver_probe_device+0x90/0x90\n __driver_probe_device+0x80/0x160\n driver_probe_device+0x1e/0x90\n __device_attach_driver+0x7d/0x100\n bus_for_each_drv+0x80/0xd0\n __device_attach+0xbc/0x1f0\n pci_bus_add_device+0x54/0x80\n pci_iov_add_virtfn+0x2e6/0x320\n sriov_enable+0x208/0x420\n mlx5_core_sriov_configure+0x9e/0x200 [mlx5_core]\n sriov_numvfs_store+0xae/0x1a0\n kernfs_fop_write_iter+0x10c/0x1a0\n vfs_write+0x291/0x3c0\n ksys_write+0x5f/0xe0\n do_syscall_64+0x3d/0x90\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n CR2: 0000000000000000\n ---[ end trace 0000000000000000 ]---",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: net/mlx5e: Fix netif state handling",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated as low severity, as it requires specific conditions in network interface setup and does not compromise confidentiality or integrity. Its impact is restricted to potential stability issues under rare circumstances.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"url": "https://access.redhat.com/security/cve/CVE-2024-38608"
},
{
"category": "external",
"summary": "RHBZ#2293356",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2293356"
},
{
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"summary": "https://www.cve.org/CVERecord?id=CVE-2024-38608",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-38608"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-38608",
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{
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"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()\n\nsyzbot found hanging tasks waiting on rtnl_lock [1]\n\nA reproducer is available in the syzbot bug.\n\nWhen a request to add multiple actions with the same index is sent, the\nsecond request will block forever on the first request. This holds\nrtnl_lock, and causes tasks to hang.\n\nReturn -EAGAIN to prevent infinite looping, while keeping documented\nbehavior.\n\n[1]\n\nINFO: task kworker/1:0:5088 blocked for more than 143 seconds.\nNot tainted 6.9.0-rc4-syzkaller-00173-g3cdb45594619 #0\n\"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\ntask:kworker/1:0 state:D stack:23744 pid:5088 tgid:5088 ppid:2 flags:0x00004000\nWorkqueue: events_power_efficient reg_check_chans_work\nCall Trace:\n\u003cTASK\u003e\ncontext_switch kernel/sched/core.c:5409 [inline]\n__schedule+0xf15/0x5d00 kernel/sched/core.c:6746\n__schedule_loop kernel/sched/core.c:6823 [inline]\nschedule+0xe7/0x350 kernel/sched/core.c:6838\nschedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895\n__mutex_lock_common kernel/locking/mutex.c:684 [inline]\n__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752\nwiphy_lock include/net/cfg80211.h:5953 [inline]\nreg_leave_invalid_chans net/wireless/reg.c:2466 [inline]\nreg_check_chans_work+0x10a/0x10e0 net/wireless/reg.c:2481",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2024-40995"
},
{
"category": "external",
"summary": "RHBZ#2297579",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2297579"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2024-40995",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-40995"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-40995",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-40995"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2024071251-CVE-2024-40995-2a5c@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2024071251-CVE-2024-40995-2a5c@gregkh/T"
}
],
"release_date": "2024-07-12T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2024-08-21T00:17:24+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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{
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"text": "A vulnerability was found in the nfs4_set_security_label() in the Linux kernel, where the function fails to free the nfs_fattr attribute before exiting, leaving said memory allocation present. As the nfs4_set_security_label() is called repeatedly over time, this may lead to memory exhaustion.",
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},
{
"category": "summary",
"text": "kernel: NFSv4: Fix memory leak in nfs4_set_security_label",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat believes this flaw to be of low severity as the only effect of this vulnerability is to lead to memory leakage which, called repeatedly over time, may lead to memory exhaustion and impact the system\u0027s performance. Given that the max xattr size on NFSv4 systems is quite small (typically 1KB; and security xattrs tend to be significantly smaller) it is safe to assume that a system\u0027s availability being impacted solely from memory exhaustion caused by this vulnerability is unlikely and thus its impact is low.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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{
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},
{
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{
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{
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"text": "A denial of service (DoS) attack was found in the mlx5 driver in the Linux kernel. A KVM guest VM using virtio-net can crash the host by sending a short packet, for example, size \u003c ETH_HLEN. The packet may traverse through vhost-net, macvtap, and vlan without any validation or drop. When this packet is presented to the mlx5 driver on the host side, the kernel panic happens since mlx5_core assumes the frame size is always \u003e= ETH_HLEN.",
"title": "Vulnerability description"
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{
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},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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{
"category": "external",
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},
{
"category": "external",
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"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Don\u0027t process extts if PTP is disabled\n\nThe ice_ptp_extts_event() function can race with ice_ptp_release() and\nresult in a NULL pointer dereference which leads to a kernel panic.\n\nPanic occurs because the ice_ptp_extts_event() function calls\nptp_clock_event() with a NULL pointer. The ice driver has already\nreleased the PTP clock by the time the interrupt for the next external\ntimestamp event occurs.\n\nTo fix this, modify the ice_ptp_extts_event() function to check the\nPTP state and bail early if PTP is not ready.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ice: Don\u0027t process extts if PTP is disabled",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2024-42107"
},
{
"category": "external",
"summary": "RHBZ#2301766",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2301766"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2024-42107",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-42107"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-42107",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42107"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2024073020-CVE-2024-42107-65cc@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2024073020-CVE-2024-42107-65cc@gregkh/T"
}
],
"release_date": "2024-07-30T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2024-08-21T00:17:24+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"confidentialityImpact": "NONE",
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"scope": "UNCHANGED",
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}
],
"title": "kernel: ice: Don\u0027t process extts if PTP is disabled"
}
]
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.