rhsa-2024_6990
Vulnerability from csaf_redhat
Published
2024-09-24 00:27
Modified
2024-11-15 18:42
Summary
Red Hat Security Advisory: kernel-rt security update
Notes
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.
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: mm/sparsemem: fix race in accessing memory_section->usage (CVE-2023-52489)
* kernel: hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs (CVE-2021-47393)
* kernel: net/smc: Fix NULL pointer dereferencing in smc_vlan_by_tcpsk() (CVE-2021-47559)
* kernel: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." (CVE-2024-40984)
* kernel: net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc() (CVE-2024-40995)
* kernel: xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create (CVE-2022-48773)
* kernel: vsock: remove vsock from connected table when connect is interrupted by a signal (CVE-2022-48786)
* kernel: perf: Fix list corruption in perf_cgroup_switch() (CVE-2022-48799)
* kernel: SUNRPC: lock against ->sock changing during sysfs read (CVE-2022-48816)
* kernel: mm: prevent derefencing NULL ptr in pfn_section_valid() (CVE-2024-41055)
* kernel: wifi: mac80211: Avoid address calculations via out of bounds array indexing (CVE-2024-41071)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to 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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"cve": "CVE-2021-47393",
"cwe": {
"id": "CWE-754",
"name": "Improper Check for Unusual or Exceptional Conditions"
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"discovery_date": "2024-05-21T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2282345"
}
],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs\n\nFan speed minimum can be enforced from sysfs. For example, setting\ncurrent fan speed to 20 is used to enforce fan speed to be at 100%\nspeed, 19 - to be not below 90% speed, etcetera. This feature provides\nability to limit fan speed according to some system wise\nconsiderations, like absence of some replaceable units or high system\nambient temperature.\n\nRequest for changing fan minimum speed is configuration request and can\nbe set only through \u0027sysfs\u0027 write procedure. In this situation value of\nargument \u0027state\u0027 is above nominal fan speed maximum.\n\nReturn non-zero code in this case to avoid\nthermal_cooling_device_stats_update() call, because in this case\nstatistics update violates thermal statistics table range.\nThe issues is observed in case kernel is configured with option\nCONFIG_THERMAL_STATISTICS.\n\nHere is the trace from KASAN:\n[ 159.506659] BUG: KASAN: slab-out-of-bounds in thermal_cooling_device_stats_update+0x7d/0xb0\n[ 159.516016] Read of size 4 at addr ffff888116163840 by task hw-management.s/7444\n[ 159.545625] Call Trace:\n[ 159.548366] dump_stack+0x92/0xc1\n[ 159.552084] ? thermal_cooling_device_stats_update+0x7d/0xb0\n[ 159.635869] thermal_zone_device_update+0x345/0x780\n[ 159.688711] thermal_zone_device_set_mode+0x7d/0xc0\n[ 159.694174] mlxsw_thermal_modules_init+0x48f/0x590 [mlxsw_core]\n[ 159.700972] ? mlxsw_thermal_set_cur_state+0x5a0/0x5a0 [mlxsw_core]\n[ 159.731827] mlxsw_thermal_init+0x763/0x880 [mlxsw_core]\n[ 160.070233] RIP: 0033:0x7fd995909970\n[ 160.074239] Code: 73 01 c3 48 8b 0d 28 d5 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 99 2d 2c 00 00 75 10 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff ..\n[ 160.095242] RSP: 002b:00007fff54f5d938 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\n[ 160.103722] RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 00007fd995909970\n[ 160.111710] RDX: 0000000000000013 RSI: 0000000001906008 RDI: 0000000000000001\n[ 160.119699] RBP: 0000000001906008 R08: 00007fd995bc9760 R09: 00007fd996210700\n[ 160.127687] R10: 0000000000000073 R11: 0000000000000246 R12: 0000000000000013\n[ 160.135673] R13: 0000000000000001 R14: 00007fd995bc8600 R15: 0000000000000013\n[ 160.143671]\n[ 160.145338] Allocated by task 2924:\n[ 160.149242] kasan_save_stack+0x19/0x40\n[ 160.153541] __kasan_kmalloc+0x7f/0xa0\n[ 160.157743] __kmalloc+0x1a2/0x2b0\n[ 160.161552] thermal_cooling_device_setup_sysfs+0xf9/0x1a0\n[ 160.167687] __thermal_cooling_device_register+0x1b5/0x500\n[ 160.173833] devm_thermal_of_cooling_device_register+0x60/0xa0\n[ 160.180356] mlxreg_fan_probe+0x474/0x5e0 [mlxreg_fan]\n[ 160.248140]\n[ 160.249807] The buggy address belongs to the object at ffff888116163400\n[ 160.249807] which belongs to the cache kmalloc-1k of size 1024\n[ 160.263814] The buggy address is located 64 bytes to the right of\n[ 160.263814] 1024-byte region [ffff888116163400, ffff888116163800)\n[ 160.277536] The buggy address belongs to the page:\n[ 160.282898] page:0000000012275840 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888116167000 pfn:0x116160\n[ 160.294872] head:0000000012275840 order:3 compound_mapcount:0 compound_pincount:0\n[ 160.303251] flags: 0x200000000010200(slab|head|node=0|zone=2)\n[ 160.309694] raw: 0200000000010200 ffffea00046f7208 ffffea0004928208 ffff88810004dbc0\n[ 160.318367] raw: ffff888116167000 00000000000a0006 00000001ffffffff 0000000000000000\n[ 160.327033] page dumped because: kasan: bad access detected\n[ 160.333270]\n[ 160.334937] Memory state around the buggy address:\n[ 160.356469] \u003effff888116163800: fc ..",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated as a moderate severity because it can disrupt system operation by causing crashes or unpredictable behaviour under specific conditions.",
"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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{
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{
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{
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{
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"text": "A vulnerability was found in the Linux kernel\u0027s SMC implementation in the smc_vlan_by_tcpsk() function. A potential NULL pointer dereference occurred when handling lower network devices, leading to system crashes and resulting in denial of service.",
"title": "Vulnerability description"
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{
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"text": "kernel: net/smc: Fix NULL pointer dereferencing in smc_vlan_by_tcpsk()",
"title": "Vulnerability summary"
},
{
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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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},
{
"category": "external",
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},
{
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"summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-47559",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47559"
},
{
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"summary": "https://lore.kernel.org/linux-cve-announce/2024052450-CVE-2021-47559-9909@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2024052450-CVE-2021-47559-9909@gregkh/T"
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"title": "kernel: net/smc: Fix NULL pointer dereferencing in smc_vlan_by_tcpsk()"
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{
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"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nxprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create\n\nIf there are failures then we must not leave the non-NULL pointers with\nthe error value, otherwise `rpcrdma_ep_destroy` gets confused and tries\nfree them, resulting in an Oops.",
"title": "Vulnerability description"
},
{
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"text": "kernel: xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create",
"title": "Vulnerability summary"
},
{
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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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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2022-48773"
},
{
"category": "external",
"summary": "RHBZ#2298109",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2298109"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2022-48773",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-48773"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-48773",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48773"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2024071628-CVE-2022-48773-9563@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2024071628-CVE-2022-48773-9563@gregkh/T"
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{
"category": "vendor_fix",
"date": "2024-09-24T00:27:36+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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{
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"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock: remove vsock from connected table when connect is interrupted by a signal\n\nvsock_connect() expects that the socket could already be in the\nTCP_ESTABLISHED state when the connecting task wakes up with a signal\npending. If this happens the socket will be in the connected table, and\nit is not removed when the socket state is reset. In this situation it\u0027s\ncommon for the process to retry connect(), and if the connection is\nsuccessful the socket will be added to the connected table a second\ntime, corrupting the list.\n\nPrevent this by calling vsock_remove_connected() if a signal is received\nwhile waiting for a connection. This is harmless if the socket is not in\nthe connected table, and if it is in the table then removing it will\nprevent list corruption from a double add.\n\nNote for backporting: this patch requires d5afa82c977e (\"vsock: correct\nremoval of socket from the list\"), which is in all current stable trees\nexcept 4.9.y.",
"title": "Vulnerability description"
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{
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"text": "kernel: vsock: remove vsock from connected table when connect is interrupted by a signal",
"title": "Vulnerability summary"
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{
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"text": "This issue is fixed in RHEL-9.1 and above\n~~~\nin (rhel-8.7, rhel-8.8, rhel-8.9, rhel-8.10) vsock: remove vsock from connected table when connect is interrupted by a signal\nin (rhel-9.1, rhel-9.2, rhel-9.3, rhel-9.4, rhel-9.5) vsock: remove vsock from connected table when connect is interrupted by a signal\n~~~\n\nPlease note that while RHEL-9 kernel-rt still appears as affected, it has been fixed in the same RHSA as RHEL-9 kernel. This is because from RHEL-9.3 onwards, the kernel and kernel-rt fixes are bundled together in a single errata.",
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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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"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPICA: Revert \"ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine.\"\n\nUndo the modifications made in commit d410ee5109a1 (\"ACPICA: avoid\n\"Info: mapping multiple BARs. Your kernel is fine.\"\"). The initial\npurpose of this commit was to stop memory mappings for operation\nregions from overlapping page boundaries, as it can trigger warnings\nif different page attributes are present.\n\nHowever, it was found that when this situation arises, mapping\ncontinues until the boundary\u0027s end, but there is still an attempt to\nread/write the entire length of the map, leading to a NULL pointer\ndeference. For example, if a four-byte mapping request is made but\nonly one byte is mapped because it hits the current page boundary\u0027s\nend, a four-byte read/write attempt is still made, resulting in a NULL\npointer deference.\n\nInstead, map the entire length, as the ACPI specification does not\nmandate that it must be within the same page boundary. It is\npermissible for it to be mapped across different regions.",
"title": "Vulnerability description"
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{
"category": "summary",
"text": "kernel: ACPICA: Revert \u0026#34;ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine.\u0026#34;",
"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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{
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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",
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"text": "kernel: net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()",
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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.",
"title": "CVSS score applicability"
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},
{
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"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"
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"date": "2024-09-24T00:27:36+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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"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"title": "kernel: wifi: mac80211: Avoid address calculations via out of bounds array indexing"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- 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.