CVE-2024-50067
Vulnerability from cvelistv5
Published
2024-10-28 00:57
Modified
2024-12-19 09:32
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
uprobe: avoid out-of-bounds memory access of fetching args
Uprobe needs to fetch args into a percpu buffer, and then copy to ring
buffer to avoid non-atomic context problem.
Sometimes user-space strings, arrays can be very large, but the size of
percpu buffer is only page size. And store_trace_args() won't check
whether these data exceeds a single page or not, caused out-of-bounds
memory access.
It could be reproduced by following steps:
1. build kernel with CONFIG_KASAN enabled
2. save follow program as test.c
```
\#include <stdio.h>
\#include <stdlib.h>
\#include <string.h>
// If string length large than MAX_STRING_SIZE, the fetch_store_strlen()
// will return 0, cause __get_data_size() return shorter size, and
// store_trace_args() will not trigger out-of-bounds access.
// So make string length less than 4096.
\#define STRLEN 4093
void generate_string(char *str, int n)
{
int i;
for (i = 0; i < n; ++i)
{
char c = i % 26 + 'a';
str[i] = c;
}
str[n-1] = '\0';
}
void print_string(char *str)
{
printf("%s\n", str);
}
int main()
{
char tmp[STRLEN];
generate_string(tmp, STRLEN);
print_string(tmp);
return 0;
}
```
3. compile program
`gcc -o test test.c`
4. get the offset of `print_string()`
```
objdump -t test | grep -w print_string
0000000000401199 g F .text 000000000000001b print_string
```
5. configure uprobe with offset 0x1199
```
off=0x1199
cd /sys/kernel/debug/tracing/
echo "p /root/test:${off} arg1=+0(%di):ustring arg2=\$comm arg3=+0(%di):ustring"
> uprobe_events
echo 1 > events/uprobes/enable
echo 1 > tracing_on
```
6. run `test`, and kasan will report error.
==================================================================
BUG: KASAN: use-after-free in strncpy_from_user+0x1d6/0x1f0
Write of size 8 at addr ffff88812311c004 by task test/499CPU: 0 UID: 0 PID: 499 Comm: test Not tainted 6.12.0-rc3+ #18
Hardware name: Red Hat KVM, BIOS 1.16.0-4.al8 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x55/0x70
print_address_description.constprop.0+0x27/0x310
kasan_report+0x10f/0x120
? strncpy_from_user+0x1d6/0x1f0
strncpy_from_user+0x1d6/0x1f0
? rmqueue.constprop.0+0x70d/0x2ad0
process_fetch_insn+0xb26/0x1470
? __pfx_process_fetch_insn+0x10/0x10
? _raw_spin_lock+0x85/0xe0
? __pfx__raw_spin_lock+0x10/0x10
? __pte_offset_map+0x1f/0x2d0
? unwind_next_frame+0xc5f/0x1f80
? arch_stack_walk+0x68/0xf0
? is_bpf_text_address+0x23/0x30
? kernel_text_address.part.0+0xbb/0xd0
? __kernel_text_address+0x66/0xb0
? unwind_get_return_address+0x5e/0xa0
? __pfx_stack_trace_consume_entry+0x10/0x10
? arch_stack_walk+0xa2/0xf0
? _raw_spin_lock_irqsave+0x8b/0xf0
? __pfx__raw_spin_lock_irqsave+0x10/0x10
? depot_alloc_stack+0x4c/0x1f0
? _raw_spin_unlock_irqrestore+0xe/0x30
? stack_depot_save_flags+0x35d/0x4f0
? kasan_save_stack+0x34/0x50
? kasan_save_stack+0x24/0x50
? mutex_lock+0x91/0xe0
? __pfx_mutex_lock+0x10/0x10
prepare_uprobe_buffer.part.0+0x2cd/0x500
uprobe_dispatcher+0x2c3/0x6a0
? __pfx_uprobe_dispatcher+0x10/0x10
? __kasan_slab_alloc+0x4d/0x90
handler_chain+0xdd/0x3e0
handle_swbp+0x26e/0x3d0
? __pfx_handle_swbp+0x10/0x10
? uprobe_pre_sstep_notifier+0x151/0x1b0
irqentry_exit_to_user_mode+0xe2/0x1b0
asm_exc_int3+0x39/0x40
RIP: 0033:0x401199
Code: 01 c2 0f b6 45 fb 88 02 83 45 fc 01 8b 45 fc 3b 45 e4 7c b7 8b 45 e4 48 98 48 8d 50 ff 48 8b 45 e8 48 01 d0 ce
RSP: 002b:00007ffdf00576a8 EFLAGS: 00000206
RAX: 00007ffdf00576b0 RBX: 0000000000000000 RCX: 0000000000000ff2
RDX: 0000000000000ffc RSI: 0000000000000ffd RDI: 00007ffdf00576b0
RBP: 00007ffdf00586b0 R08: 00007feb2f9c0d20 R09: 00007feb2f9c0d20
R10: 0000000000000001 R11: 0000000000000202 R12: 0000000000401040
R13: 00007ffdf0058780 R14: 0000000000000000 R15: 0000000000000000
</TASK>
This commit enforces the buffer's maxlen less than a page-size to avoid
store_trace_args() out-of-memory access.
References
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"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"
}
},
{
"other": {
"content": {
"id": "CVE-2024-50067",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-12-11T14:49:09.097229Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use After Free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-12-11T14:58:34.869Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"kernel/trace/trace_uprobe.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "0dc3ad9ad2188da7f090b3dbe4d2fcd9ae8ae64f",
"status": "affected",
"version": "dcad1a204f72624796ae83359403898d10393b9c",
"versionType": "git"
},
{
"lessThan": "9e5f93788c9dd4309e75a56860a1ac44a8e117b9",
"status": "affected",
"version": "dcad1a204f72624796ae83359403898d10393b9c",
"versionType": "git"
},
{
"lessThan": "537ad4a431f6dddbf15d40d19f24bb9ee12b55cb",
"status": "affected",
"version": "dcad1a204f72624796ae83359403898d10393b9c",
"versionType": "git"
},
{
"lessThan": "373b9338c9722a368925d83bc622c596896b328e",
"status": "affected",
"version": "dcad1a204f72624796ae83359403898d10393b9c",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"kernel/trace/trace_uprobe.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.14"
},
{
"lessThan": "3.14",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.118",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.59",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.11.*",
"status": "unaffected",
"version": "6.11.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuprobe: avoid out-of-bounds memory access of fetching args\n\nUprobe needs to fetch args into a percpu buffer, and then copy to ring\nbuffer to avoid non-atomic context problem.\n\nSometimes user-space strings, arrays can be very large, but the size of\npercpu buffer is only page size. And store_trace_args() won\u0027t check\nwhether these data exceeds a single page or not, caused out-of-bounds\nmemory access.\n\nIt could be reproduced by following steps:\n1. build kernel with CONFIG_KASAN enabled\n2. save follow program as test.c\n\n```\n\\#include \u003cstdio.h\u003e\n\\#include \u003cstdlib.h\u003e\n\\#include \u003cstring.h\u003e\n\n// If string length large than MAX_STRING_SIZE, the fetch_store_strlen()\n// will return 0, cause __get_data_size() return shorter size, and\n// store_trace_args() will not trigger out-of-bounds access.\n// So make string length less than 4096.\n\\#define STRLEN 4093\n\nvoid generate_string(char *str, int n)\n{\n int i;\n for (i = 0; i \u003c n; ++i)\n {\n char c = i % 26 + \u0027a\u0027;\n str[i] = c;\n }\n str[n-1] = \u0027\\0\u0027;\n}\n\nvoid print_string(char *str)\n{\n printf(\"%s\\n\", str);\n}\n\nint main()\n{\n char tmp[STRLEN];\n\n generate_string(tmp, STRLEN);\n print_string(tmp);\n\n return 0;\n}\n```\n3. compile program\n`gcc -o test test.c`\n\n4. get the offset of `print_string()`\n```\nobjdump -t test | grep -w print_string\n0000000000401199 g F .text 000000000000001b print_string\n```\n\n5. configure uprobe with offset 0x1199\n```\noff=0x1199\n\ncd /sys/kernel/debug/tracing/\necho \"p /root/test:${off} arg1=+0(%di):ustring arg2=\\$comm arg3=+0(%di):ustring\"\n \u003e uprobe_events\necho 1 \u003e events/uprobes/enable\necho 1 \u003e tracing_on\n```\n\n6. run `test`, and kasan will report error.\n==================================================================\nBUG: KASAN: use-after-free in strncpy_from_user+0x1d6/0x1f0\nWrite of size 8 at addr ffff88812311c004 by task test/499CPU: 0 UID: 0 PID: 499 Comm: test Not tainted 6.12.0-rc3+ #18\nHardware name: Red Hat KVM, BIOS 1.16.0-4.al8 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x55/0x70\n print_address_description.constprop.0+0x27/0x310\n kasan_report+0x10f/0x120\n ? strncpy_from_user+0x1d6/0x1f0\n strncpy_from_user+0x1d6/0x1f0\n ? rmqueue.constprop.0+0x70d/0x2ad0\n process_fetch_insn+0xb26/0x1470\n ? __pfx_process_fetch_insn+0x10/0x10\n ? _raw_spin_lock+0x85/0xe0\n ? __pfx__raw_spin_lock+0x10/0x10\n ? __pte_offset_map+0x1f/0x2d0\n ? unwind_next_frame+0xc5f/0x1f80\n ? arch_stack_walk+0x68/0xf0\n ? is_bpf_text_address+0x23/0x30\n ? kernel_text_address.part.0+0xbb/0xd0\n ? __kernel_text_address+0x66/0xb0\n ? unwind_get_return_address+0x5e/0xa0\n ? __pfx_stack_trace_consume_entry+0x10/0x10\n ? arch_stack_walk+0xa2/0xf0\n ? _raw_spin_lock_irqsave+0x8b/0xf0\n ? __pfx__raw_spin_lock_irqsave+0x10/0x10\n ? depot_alloc_stack+0x4c/0x1f0\n ? _raw_spin_unlock_irqrestore+0xe/0x30\n ? stack_depot_save_flags+0x35d/0x4f0\n ? kasan_save_stack+0x34/0x50\n ? kasan_save_stack+0x24/0x50\n ? mutex_lock+0x91/0xe0\n ? __pfx_mutex_lock+0x10/0x10\n prepare_uprobe_buffer.part.0+0x2cd/0x500\n uprobe_dispatcher+0x2c3/0x6a0\n ? __pfx_uprobe_dispatcher+0x10/0x10\n ? __kasan_slab_alloc+0x4d/0x90\n handler_chain+0xdd/0x3e0\n handle_swbp+0x26e/0x3d0\n ? __pfx_handle_swbp+0x10/0x10\n ? uprobe_pre_sstep_notifier+0x151/0x1b0\n irqentry_exit_to_user_mode+0xe2/0x1b0\n asm_exc_int3+0x39/0x40\nRIP: 0033:0x401199\nCode: 01 c2 0f b6 45 fb 88 02 83 45 fc 01 8b 45 fc 3b 45 e4 7c b7 8b 45 e4 48 98 48 8d 50 ff 48 8b 45 e8 48 01 d0 ce\nRSP: 002b:00007ffdf00576a8 EFLAGS: 00000206\nRAX: 00007ffdf00576b0 RBX: 0000000000000000 RCX: 0000000000000ff2\nRDX: 0000000000000ffc RSI: 0000000000000ffd RDI: 00007ffdf00576b0\nRBP: 00007ffdf00586b0 R08: 00007feb2f9c0d20 R09: 00007feb2f9c0d20\nR10: 0000000000000001 R11: 0000000000000202 R12: 0000000000401040\nR13: 00007ffdf0058780 R14: 0000000000000000 R15: 0000000000000000\n \u003c/TASK\u003e\n\nThis commit enforces the buffer\u0027s maxlen less than a page-size to avoid\nstore_trace_args() out-of-memory access."
}
],
"providerMetadata": {
"dateUpdated": "2024-12-19T09:32:21.611Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/0dc3ad9ad2188da7f090b3dbe4d2fcd9ae8ae64f"
},
{
"url": "https://git.kernel.org/stable/c/9e5f93788c9dd4309e75a56860a1ac44a8e117b9"
},
{
"url": "https://git.kernel.org/stable/c/537ad4a431f6dddbf15d40d19f24bb9ee12b55cb"
},
{
"url": "https://git.kernel.org/stable/c/373b9338c9722a368925d83bc622c596896b328e"
}
],
"title": "uprobe: avoid out-of-bounds memory access of fetching args",
"x_generator": {
"engine": "bippy-5f407fcff5a0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-50067",
"datePublished": "2024-10-28T00:57:05.734Z",
"dateReserved": "2024-10-21T19:36:19.939Z",
"dateUpdated": "2024-12-19T09:32:21.611Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2024-50067\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-28T01:15:02.930\",\"lastModified\":\"2024-12-11T15:15:10.943\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nuprobe: avoid out-of-bounds memory access of fetching args\\n\\nUprobe needs to fetch args into a percpu buffer, and then copy to ring\\nbuffer to avoid non-atomic context problem.\\n\\nSometimes user-space strings, arrays can be very large, but the size of\\npercpu buffer is only page size. And store_trace_args() won\u0027t check\\nwhether these data exceeds a single page or not, caused out-of-bounds\\nmemory access.\\n\\nIt could be reproduced by following steps:\\n1. build kernel with CONFIG_KASAN enabled\\n2. save follow program as test.c\\n\\n```\\n\\\\#include \u003cstdio.h\u003e\\n\\\\#include \u003cstdlib.h\u003e\\n\\\\#include \u003cstring.h\u003e\\n\\n// If string length large than MAX_STRING_SIZE, the fetch_store_strlen()\\n// will return 0, cause __get_data_size() return shorter size, and\\n// store_trace_args() will not trigger out-of-bounds access.\\n// So make string length less than 4096.\\n\\\\#define STRLEN 4093\\n\\nvoid generate_string(char *str, int n)\\n{\\n int i;\\n for (i = 0; i \u003c n; ++i)\\n {\\n char c = i % 26 + \u0027a\u0027;\\n str[i] = c;\\n }\\n str[n-1] = \u0027\\\\0\u0027;\\n}\\n\\nvoid print_string(char *str)\\n{\\n printf(\\\"%s\\\\n\\\", str);\\n}\\n\\nint main()\\n{\\n char tmp[STRLEN];\\n\\n generate_string(tmp, STRLEN);\\n print_string(tmp);\\n\\n return 0;\\n}\\n```\\n3. compile program\\n`gcc -o test test.c`\\n\\n4. get the offset of `print_string()`\\n```\\nobjdump -t test | grep -w print_string\\n0000000000401199 g F .text 000000000000001b print_string\\n```\\n\\n5. configure uprobe with offset 0x1199\\n```\\noff=0x1199\\n\\ncd /sys/kernel/debug/tracing/\\necho \\\"p /root/test:${off} arg1=+0(%di):ustring arg2=\\\\$comm arg3=+0(%di):ustring\\\"\\n \u003e uprobe_events\\necho 1 \u003e events/uprobes/enable\\necho 1 \u003e tracing_on\\n```\\n\\n6. run `test`, and kasan will report error.\\n==================================================================\\nBUG: KASAN: use-after-free in strncpy_from_user+0x1d6/0x1f0\\nWrite of size 8 at addr ffff88812311c004 by task test/499CPU: 0 UID: 0 PID: 499 Comm: test Not tainted 6.12.0-rc3+ #18\\nHardware name: Red Hat KVM, BIOS 1.16.0-4.al8 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x55/0x70\\n print_address_description.constprop.0+0x27/0x310\\n kasan_report+0x10f/0x120\\n ? strncpy_from_user+0x1d6/0x1f0\\n strncpy_from_user+0x1d6/0x1f0\\n ? rmqueue.constprop.0+0x70d/0x2ad0\\n process_fetch_insn+0xb26/0x1470\\n ? __pfx_process_fetch_insn+0x10/0x10\\n ? _raw_spin_lock+0x85/0xe0\\n ? __pfx__raw_spin_lock+0x10/0x10\\n ? __pte_offset_map+0x1f/0x2d0\\n ? unwind_next_frame+0xc5f/0x1f80\\n ? arch_stack_walk+0x68/0xf0\\n ? is_bpf_text_address+0x23/0x30\\n ? kernel_text_address.part.0+0xbb/0xd0\\n ? __kernel_text_address+0x66/0xb0\\n ? unwind_get_return_address+0x5e/0xa0\\n ? __pfx_stack_trace_consume_entry+0x10/0x10\\n ? arch_stack_walk+0xa2/0xf0\\n ? _raw_spin_lock_irqsave+0x8b/0xf0\\n ? __pfx__raw_spin_lock_irqsave+0x10/0x10\\n ? depot_alloc_stack+0x4c/0x1f0\\n ? _raw_spin_unlock_irqrestore+0xe/0x30\\n ? stack_depot_save_flags+0x35d/0x4f0\\n ? kasan_save_stack+0x34/0x50\\n ? kasan_save_stack+0x24/0x50\\n ? mutex_lock+0x91/0xe0\\n ? __pfx_mutex_lock+0x10/0x10\\n prepare_uprobe_buffer.part.0+0x2cd/0x500\\n uprobe_dispatcher+0x2c3/0x6a0\\n ? __pfx_uprobe_dispatcher+0x10/0x10\\n ? __kasan_slab_alloc+0x4d/0x90\\n handler_chain+0xdd/0x3e0\\n handle_swbp+0x26e/0x3d0\\n ? __pfx_handle_swbp+0x10/0x10\\n ? uprobe_pre_sstep_notifier+0x151/0x1b0\\n irqentry_exit_to_user_mode+0xe2/0x1b0\\n asm_exc_int3+0x39/0x40\\nRIP: 0033:0x401199\\nCode: 01 c2 0f b6 45 fb 88 02 83 45 fc 01 8b 45 fc 3b 45 e4 7c b7 8b 45 e4 48 98 48 8d 50 ff 48 8b 45 e8 48 01 d0 ce\\nRSP: 002b:00007ffdf00576a8 EFLAGS: 00000206\\nRAX: 00007ffdf00576b0 RBX: 0000000000000000 RCX: 0000000000000ff2\\nRDX: 0000000000000ffc RSI: 0000000000000ffd RDI: 00007ffdf00576b0\\nRBP: 00007ffdf00586b0 R08: 00007feb2f9c0d20 R09: 00007feb2f9c0d20\\nR10: 0000000000000001 R11: 0000000000000202 R12: 0000000000401040\\nR13: 00007ffdf0058780 R14: 0000000000000000 R15: 0000000000000000\\n \u003c/TASK\u003e\\n\\nThis commit enforces the buffer\u0027s maxlen less than a page-size to avoid\\nstore_trace_args() out-of-memory access.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: uprobe: evitar el acceso a memoria fuera de los l\u00edmites para obtener argumentos. Uprobe necesita obtener argumentos en un b\u00fafer por CPU y luego copiarlos en el b\u00fafer de anillo para evitar problemas de contexto no at\u00f3mico. A veces, las cadenas y matrices del espacio de usuario pueden ser muy grandes, pero el tama\u00f1o del b\u00fafer por CPU es solo el tama\u00f1o de la p\u00e1gina. Y store_trace_args() no verificar\u00e1 si estos datos exceden una sola p\u00e1gina o no, lo que provoc\u00f3 un acceso a memoria fuera de los l\u00edmites. Se puede reproducir siguiendo los pasos: 1. compilar el kernel con CONFIG_KASAN habilitado 2. guardar el siguiente programa como test.c ``` \\\\#include \\\\#include \\\\#include // Si la longitud de la cadena es mayor que MAX_STRING_SIZE, fetch_store_strlen() // devolver\u00e1 0, lo que har\u00e1 que __get_data_size() devuelva un tama\u00f1o menor y // store_trace_args() no active el acceso fuera de los l\u00edmites. // Entonces haga que la longitud de la cadena sea menor que 4096. \\\\#define STRLEN 4093 void generate_string(char *str, int n) { int i; for (i = 0; i \u0026lt; n; ++i) { char c = i % 26 + \u0027a\u0027; str[i] = c; } str[n-1] = \u0027\\\\0\u0027; } void print_string(char *str) { printf(\\\"%s\\\\n\\\", str); } int main() { char tmp[STRLEN]; generate_string(tmp, STRLEN); print_string(tmp); return 0; } ``` 3. compilar el programa `gcc -o test test.c` 4. obtener el desplazamiento de `print_string()` ``` objdump -t test | grep -w print_string 0000000000401199 g F .text 000000000000001b print_string ``` 5. configure uprobe con desplazamiento 0x1199 ``` off=0x1199 cd /sys/kernel/debug/tracing/ echo \\\"p /root/test:${off} arg1=+0(%di):ustring arg2=\\\\$comm arg3=+0(%di):ustring\\\" \u0026gt; uprobe_events echo 1 \u0026gt; events/uprobes/enable echo 1 \u0026gt; tracing_on ``` 6. ejecute `test` y kasan informar\u00e1 el error. ===================================================================== ERROR: KASAN: use-after-free en strncpy_from_user+0x1d6/0x1f0 Escritura de tama\u00f1o 8 en la direcci\u00f3n ffff88812311c004 por la tarea test/499CPU: 0 UID: 0 PID: 499 Comm: test No contaminado 6.12.0-rc3+ #18 Nombre del hardware: Red Hat KVM, BIOS 1.16.0-4.al8 01/04/2014 Rastreo de llamadas: dump_stack_lvl+0x55/0x70 descripci\u00f3n_direcci\u00f3n_impresi\u00f3n.constprop.0+0x27/0x310 informe_kasan+0x10f/0x120 ? strncpy_desde_usuario+0x1d6/0x1f0 strncpy_desde_usuario+0x1d6/0x1f0 ? rmqueue.constprop.0+0x70d/0x2ad0 inserci\u00f3n_obtenci\u00f3n_proceso+0xb26/0x1470 ? __pfx_instrucci\u00f3n_obtenci\u00f3n_proceso+0x10/0x10 ? _bloqueo_giro_sin_procesamiento+0x85/0xe0 ? __pfx__bloqueo_giro_sin_procesamiento+0x10/0x10 ? __pte_offset_map+0x1f/0x2d0 ? desenrollar_siguiente_fotograma+0xc5f/0x1f80 ? arch_stack_walk+0x68/0xf0 ? is_bpf_text_address+0x23/0x30 ? kernel_text_address.part.0+0xbb/0xd0 ? __kernel_text_address+0x66/0xb0 ? unwind_get_return_address+0x5e/0xa0 ? __pfx_stack_trace_consume_entry+0x10/0x10 ? arch_stack_walk+0xa2/0xf0 ? _raw_spin_lock_irqsave+0x8b/0xf0 ? __pfx__raw_spin_lock_irqsave+0x10/0x10 ? depot_alloc_stack+0x4c/0x1f0 ? __pfx_uprobe_dispatcher+0x10/0x10 ? __kasan_slab_alloc+0x4d/0x90 handler_chain+0xdd/0x3e0 handle_swbp+0x26e/0x3d0 ? __pfx_handle_swbp+0x10/0x10 ? uprobe_pre_sstep_notifier+0x151/0x1b0 irqentry_exit_to_user_mode+0xe2/0x1b0 asm_exc_int3+0x39/0x40 RIP: 0033:0x401199 C\u00f3digo: 01 c2 0f b6 45 fb 88 02 83 45 fc 01 8b 45 fc 3b 45 e4 7c b7 8b 45 e4 48 98 48 8d 50 ff 48 8b 45 e8 48 01 d0 ce RSP: 002b:00007ffdf00576a8 EFLAGS: 00000206 RAX: 00007ffdf00576b0 RBX: 0000000000000000 RCX: 0000000000000ff2 RDX: 0000000000000ffc RSI: 0000000000000ffd RDI: 00007ffdf00576b0 RBP: 00007ffdf00586b0 R08: 00007feb2f9c0d20 R09: 00007feb2f9c0d20 R10: 000000000000001 R11: 0000000000000202 R12: 0000000000401040 R13: 00007ffdf0058780 R14: 00000000000000000 R15: 0000000000000000 Esta confirmaci\u00f3n hace que la longitud m\u00e1xima del b\u00fafer sea menor que el tama\u00f1o de una p\u00e1gina para evitar el acceso fuera de memoria a store_trace_args().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.14\",\"versionEndExcluding\":\"6.12\",\"matchCriteriaId\":\"8F4406AF-A340-4EB4-9920-E502C2DA6CCC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0F717D8-3014-4F84-8086-0124B2111379\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0dc3ad9ad2188da7f090b3dbe4d2fcd9ae8ae64f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/373b9338c9722a368925d83bc622c596896b328e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/537ad4a431f6dddbf15d40d19f24bb9ee12b55cb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9e5f93788c9dd4309e75a56860a1ac44a8e117b9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
}
}
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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.