rhsa-2024_6745
Vulnerability from csaf_redhat
Published
2024-09-18 00:09
Modified
2024-11-15 20:39
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 Moderate. 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: Bluetooth: af_bluetooth: Fix deadlock (CVE-2024-26886)
* kernel: crypto: qat - resolve race condition during AER recovery (CVE-2024-26974)
* kernel: tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc (CVE-2023-52880)
* kernel: cpufreq: exit() callback is optional (CVE-2024-38615)
* kernel: cppc_cpufreq: Fix possible null pointer dereference (CVE-2024-38573)
* kernel: scsi: qedf: Ensure the copied buf is NUL terminated (CVE-2024-38559)
* kernel: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." (CVE-2024-40984)
* kernel: sched/deadline: Fix task_struct reference leak (CVE-2024-41023)
* kernel: mm/filemap: skip to create PMD-sized page cache if needed (CVE-2024-41031)
* kernel: mm/shmem: disable PMD-sized page cache if needed (CVE-2024-42241)
* kernel: mm/filemap: make MAX_PAGECACHE_ORDER acceptable to xarray (CVE-2024-42243)
* kernel: net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket (CVE-2024-42246)
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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"name": "Improper Control of Resource Identifiers (\u0027Resource Injection\u0027)"
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"text": "2283468"
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{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc\n\nAny unprivileged user can attach N_GSM0710 ldisc, but it requires\nCAP_NET_ADMIN to create a GSM network anyway.\n\nRequire initial namespace CAP_NET_ADMIN to do that.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc",
"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": "external",
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{
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},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-52880",
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},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2024052422-CVE-2023-52880-d2ff@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2024052422-CVE-2023-52880-d2ff@gregkh/T"
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"title": "Vulnerability description"
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{
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"title": "Vulnerability summary"
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{
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{
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"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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"title": "kernel: cppc_cpufreq: Fix possible null pointer dereference"
},
{
"cve": "CVE-2024-38615",
"cwe": {
"id": "CWE-459",
"name": "Incomplete Cleanup"
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"text": "2293348"
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],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: exit() callback is optional\n\nThe exit() callback is optional and shouldn\u0027t be called without checking\na valid pointer first.\n\nAlso, we must clear freq_table pointer even if the exit() callback isn\u0027t\npresent.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: cpufreq: exit() callback is optional",
"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": "external",
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},
{
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"url": "https://www.cve.org/CVERecord?id=CVE-2024-38615"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-38615",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38615"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2024061922-CVE-2024-38615-0d4c@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2024061922-CVE-2024-38615-0d4c@gregkh/T"
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{
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"date": "2024-09-18T00:09:28+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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"title": "kernel: cpufreq: exit() callback is optional"
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{
"cve": "CVE-2024-40984",
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"id": "CWE-476",
"name": "NULL Pointer Dereference"
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{
"system_name": "Red Hat Bugzilla ID",
"text": "2297568"
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{
"category": "description",
"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"
},
{
"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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},
{
"category": "external",
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2297568"
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{
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"url": "https://www.cve.org/CVERecord?id=CVE-2024-40984"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-40984",
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},
{
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"url": "https://lore.kernel.org/linux-cve-announce/2024071201-CVE-2024-40984-66b2@gregkh/T"
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"date": "2024-09-18T00:09:28+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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"title": "kernel: ACPICA: Revert \u0026#34;ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine.\u0026#34;"
},
{
"cve": "CVE-2024-41023",
"cwe": {
"id": "CWE-401",
"name": "Missing Release of Memory after Effective Lifetime"
},
"discovery_date": "2024-07-29T00:00:00+00:00",
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{
"system_name": "Red Hat Bugzilla ID",
"text": "2300381"
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],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/deadline: Fix task_struct reference leak\n\nDuring the execution of the following stress test with linux-rt:\n\nstress-ng --cyclic 30 --timeout 30 --minimize --quiet\n\nkmemleak frequently reported a memory leak concerning the task_struct:\n\nunreferenced object 0xffff8881305b8000 (size 16136):\n comm \"stress-ng\", pid 614, jiffies 4294883961 (age 286.412s)\n object hex dump (first 32 bytes):\n 02 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 .@..............\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n debug hex dump (first 16 bytes):\n 53 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 S...............\n backtrace:\n [\u003c00000000046b6790\u003e] dup_task_struct+0x30/0x540\n [\u003c00000000c5ca0f0b\u003e] copy_process+0x3d9/0x50e0\n [\u003c00000000ced59777\u003e] kernel_clone+0xb0/0x770\n [\u003c00000000a50befdc\u003e] __do_sys_clone+0xb6/0xf0\n [\u003c000000001dbf2008\u003e] do_syscall_64+0x5d/0xf0\n [\u003c00000000552900ff\u003e] entry_SYSCALL_64_after_hwframe+0x6e/0x76\n\nThe issue occurs in start_dl_timer(), which increments the task_struct\nreference count and sets a timer. The timer callback, dl_task_timer,\nis supposed to decrement the reference count upon expiration. However,\nif enqueue_task_dl() is called before the timer expires and cancels it,\nthe reference count is not decremented, leading to the leak.\n\nThis patch fixes the reference leak by ensuring the task_struct\nreference count is properly decremented when the timer is canceled.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: sched/deadline: Fix task_struct reference leak",
"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-2024-41023"
},
{
"category": "external",
"summary": "RHBZ#2300381",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2300381"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2024-41023",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-41023"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-41023",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41023"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2024072917-CVE-2024-41023-32a0@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2024072917-CVE-2024-41023-32a0@gregkh/T"
}
],
"release_date": "2024-07-29T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2024-09-18T00:09:28+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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{
"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": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2024:6745"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"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",
"version": "3.1"
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],
"title": "kernel: mm/shmem: disable PMD-sized page cache if needed"
},
{
"cve": "CVE-2024-42243",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"discovery_date": "2024-08-07T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2303511"
}
],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/filemap: make MAX_PAGECACHE_ORDER acceptable to xarray\n\nPatch series \"mm/filemap: Limit page cache size to that supported by\nxarray\", v2.\n\nCurrently, xarray can\u0027t support arbitrary page cache size. More details\ncan be found from the WARN_ON() statement in xas_split_alloc(). In our\ntest whose code is attached below, we hit the WARN_ON() on ARM64 system\nwhere the base page size is 64KB and huge page size is 512MB. The issue\nwas reported long time ago and some discussions on it can be found here\n[1].\n\n[1] https://www.spinics.net/lists/linux-xfs/msg75404.html\n\nIn order to fix the issue, we need to adjust MAX_PAGECACHE_ORDER to one\nsupported by xarray and avoid PMD-sized page cache if needed. The code\nchanges are suggested by David Hildenbrand.\n\nPATCH[1] adjusts MAX_PAGECACHE_ORDER to that supported by xarray\nPATCH[2-3] avoids PMD-sized page cache in the synchronous readahead path\nPATCH[4] avoids PMD-sized page cache for shmem files if needed\n\nTest program\n============\n# cat test.c\n#define _GNU_SOURCE\n#include \u003cstdio.h\u003e\n#include \u003cstdlib.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003cstring.h\u003e\n#include \u003cfcntl.h\u003e\n#include \u003cerrno.h\u003e\n#include \u003csys/syscall.h\u003e\n#include \u003csys/mman.h\u003e\n\n#define TEST_XFS_FILENAME\t\"/tmp/data\"\n#define TEST_SHMEM_FILENAME\t\"/dev/shm/data\"\n#define TEST_MEM_SIZE\t\t0x20000000\n\nint main(int argc, char **argv)\n{\n\tconst char *filename;\n\tint fd = 0;\n\tvoid *buf = (void *)-1, *p;\n\tint pgsize = getpagesize();\n\tint ret;\n\n\tif (pgsize != 0x10000) {\n\t\tfprintf(stderr, \"64KB base page size is required\\n\");\n\t\treturn -EPERM;\n\t}\n\n\tsystem(\"echo force \u003e /sys/kernel/mm/transparent_hugepage/shmem_enabled\");\n\tsystem(\"rm -fr /tmp/data\");\n\tsystem(\"rm -fr /dev/shm/data\");\n\tsystem(\"echo 1 \u003e /proc/sys/vm/drop_caches\");\n\n\t/* Open xfs or shmem file */\n\tfilename = TEST_XFS_FILENAME;\n\tif (argc \u003e 1 \u0026\u0026 !strcmp(argv[1], \"shmem\"))\n\t\tfilename = TEST_SHMEM_FILENAME;\n\n\tfd = open(filename, O_CREAT | O_RDWR | O_TRUNC);\n\tif (fd \u003c 0) {\n\t\tfprintf(stderr, \"Unable to open \u003c%s\u003e\\n\", filename);\n\t\treturn -EIO;\n\t}\n\n\t/* Extend file size */\n\tret = ftruncate(fd, TEST_MEM_SIZE);\n\tif (ret) {\n\t\tfprintf(stderr, \"Error %d to ftruncate()\\n\", ret);\n\t\tgoto cleanup;\n\t}\n\n\t/* Create VMA */\n\tbuf = mmap(NULL, TEST_MEM_SIZE,\n\t\t PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);\n\tif (buf == (void *)-1) {\n\t\tfprintf(stderr, \"Unable to mmap \u003c%s\u003e\\n\", filename);\n\t\tgoto cleanup;\n\t}\n\n\tfprintf(stdout, \"mapped buffer at 0x%p\\n\", buf);\n\tret = madvise(buf, TEST_MEM_SIZE, MADV_HUGEPAGE);\n if (ret) {\n\t\tfprintf(stderr, \"Unable to madvise(MADV_HUGEPAGE)\\n\");\n\t\tgoto cleanup;\n\t}\n\n\t/* Populate VMA */\n\tret = madvise(buf, TEST_MEM_SIZE, MADV_POPULATE_WRITE);\n\tif (ret) {\n\t\tfprintf(stderr, \"Error %d to madvise(MADV_POPULATE_WRITE)\\n\", ret);\n\t\tgoto cleanup;\n\t}\n\n\t/* Punch the file to enforce xarray split */\n\tret = fallocate(fd, FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE,\n \t\tTEST_MEM_SIZE - pgsize, pgsize);\n\tif (ret)\n\t\tfprintf(stderr, \"Error %d to fallocate()\\n\", ret);\n\ncleanup:\n\tif (buf != (void *)-1)\n\t\tmunmap(buf, TEST_MEM_SIZE);\n\tif (fd \u003e 0)\n\t\tclose(fd);\n\n\treturn 0;\n}\n\n# gcc test.c -o test\n# cat /proc/1/smaps | grep KernelPageSize | head -n 1\nKernelPageSize: 64 kB\n# ./test shmem\n :\n------------[ cut here ]------------\nWARNING: CPU: 17 PID: 5253 at lib/xarray.c:1025 xas_split_alloc+0xf8/0x128\nModules linked in: nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib \\\nnft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct \\\nnft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 \\\nip_set nf_tables rfkill nfnetlink vfat fat virtio_balloon \\\ndrm fuse xfs libcrc32c crct10dif_ce ghash_ce sha2_ce sha256_arm64 \\\nvirtio_net sha1_ce net_failover failover virtio_console virtio_blk \\\ndimlib virtio_mmio\nCPU: 17 PID: 5253 Comm: test Kdump: loaded Tainted: G W 6.10.0-rc5-gavin+ #12\nHardware name: QEMU KVM Virtual Machine, BIOS edk2-20240524-1.el9 05/24/2024\npstate: 83400005 (Nzcv daif +PAN -UAO +TC\n---truncated---",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: mm/filemap: make MAX_PAGECACHE_ORDER acceptable to xarray",
"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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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2024-42243"
},
{
"category": "external",
"summary": "RHBZ#2303511",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2303511"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2024-42243",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-42243"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-42243",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42243"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2024080741-CVE-2024-42243-2ed5@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2024080741-CVE-2024-42243-2ed5@gregkh/T"
}
],
"release_date": "2024-08-07T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2024-09-18T00:09:28+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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{
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{
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{
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{
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"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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]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket"
}
]
}
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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.