CVE-2025-38320 (GCVE-0-2025-38320)
Vulnerability from cvelistv5
Published
2025-07-10 08:14
Modified
2025-07-28 04:18
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
arm64/ptrace: Fix stack-out-of-bounds read in regs_get_kernel_stack_nth()
KASAN reports a stack-out-of-bounds read in regs_get_kernel_stack_nth().
Call Trace:
[ 97.283505] BUG: KASAN: stack-out-of-bounds in regs_get_kernel_stack_nth+0xa8/0xc8
[ 97.284677] Read of size 8 at addr ffff800089277c10 by task 1.sh/2550
[ 97.285732]
[ 97.286067] CPU: 7 PID: 2550 Comm: 1.sh Not tainted 6.6.0+ #11
[ 97.287032] Hardware name: linux,dummy-virt (DT)
[ 97.287815] Call trace:
[ 97.288279] dump_backtrace+0xa0/0x128
[ 97.288946] show_stack+0x20/0x38
[ 97.289551] dump_stack_lvl+0x78/0xc8
[ 97.290203] print_address_description.constprop.0+0x84/0x3c8
[ 97.291159] print_report+0xb0/0x280
[ 97.291792] kasan_report+0x84/0xd0
[ 97.292421] __asan_load8+0x9c/0xc0
[ 97.293042] regs_get_kernel_stack_nth+0xa8/0xc8
[ 97.293835] process_fetch_insn+0x770/0xa30
[ 97.294562] kprobe_trace_func+0x254/0x3b0
[ 97.295271] kprobe_dispatcher+0x98/0xe0
[ 97.295955] kprobe_breakpoint_handler+0x1b0/0x210
[ 97.296774] call_break_hook+0xc4/0x100
[ 97.297451] brk_handler+0x24/0x78
[ 97.298073] do_debug_exception+0xac/0x178
[ 97.298785] el1_dbg+0x70/0x90
[ 97.299344] el1h_64_sync_handler+0xcc/0xe8
[ 97.300066] el1h_64_sync+0x78/0x80
[ 97.300699] kernel_clone+0x0/0x500
[ 97.301331] __arm64_sys_clone+0x70/0x90
[ 97.302084] invoke_syscall+0x68/0x198
[ 97.302746] el0_svc_common.constprop.0+0x11c/0x150
[ 97.303569] do_el0_svc+0x38/0x50
[ 97.304164] el0_svc+0x44/0x1d8
[ 97.304749] el0t_64_sync_handler+0x100/0x130
[ 97.305500] el0t_64_sync+0x188/0x190
[ 97.306151]
[ 97.306475] The buggy address belongs to stack of task 1.sh/2550
[ 97.307461] and is located at offset 0 in frame:
[ 97.308257] __se_sys_clone+0x0/0x138
[ 97.308910]
[ 97.309241] This frame has 1 object:
[ 97.309873] [48, 184) 'args'
[ 97.309876]
[ 97.310749] The buggy address belongs to the virtual mapping at
[ 97.310749] [ffff800089270000, ffff800089279000) created by:
[ 97.310749] dup_task_struct+0xc0/0x2e8
[ 97.313347]
[ 97.313674] The buggy address belongs to the physical page:
[ 97.314604] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14f69a
[ 97.315885] flags: 0x15ffffe00000000(node=1|zone=2|lastcpupid=0xfffff)
[ 97.316957] raw: 015ffffe00000000 0000000000000000 dead000000000122 0000000000000000
[ 97.318207] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[ 97.319445] page dumped because: kasan: bad access detected
[ 97.320371]
[ 97.320694] Memory state around the buggy address:
[ 97.321511] ffff800089277b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 97.322681] ffff800089277b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 97.323846] >ffff800089277c00: 00 00 f1 f1 f1 f1 f1 f1 00 00 00 00 00 00 00 00
[ 97.325023] ^
[ 97.325683] ffff800089277c80: 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3 f3 f3
[ 97.326856] ffff800089277d00: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00
This issue seems to be related to the behavior of some gcc compilers and
was also fixed on the s390 architecture before:
commit d93a855c31b7 ("s390/ptrace: Avoid KASAN false positives in regs_get_kernel_stack_nth()")
As described in that commit, regs_get_kernel_stack_nth() has confirmed that
`addr` is on the stack, so reading the value at `*addr` should be allowed.
Use READ_ONCE_NOCHECK() helper to silence the KASAN check for this case.
[will: Use '*addr' as the argument to READ_ONCE_NOCHECK()]
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ► | Linux | Linux |
Version: 0a8ea52c3eb157dd65e224fc95b7c9c99fcba9f7 Version: 0a8ea52c3eb157dd65e224fc95b7c9c99fcba9f7 Version: 0a8ea52c3eb157dd65e224fc95b7c9c99fcba9f7 Version: 0a8ea52c3eb157dd65e224fc95b7c9c99fcba9f7 Version: 0a8ea52c3eb157dd65e224fc95b7c9c99fcba9f7 Version: 0a8ea52c3eb157dd65e224fc95b7c9c99fcba9f7 Version: 0a8ea52c3eb157dd65e224fc95b7c9c99fcba9f7 Version: 0a8ea52c3eb157dd65e224fc95b7c9c99fcba9f7 |
|
{
"containers": {
"cna": {
"affected": [
{
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"product": "Linux",
"programFiles": [
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],
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"vendor": "Linux",
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"version": "4.8"
},
{
"lessThan": "4.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.295",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.239",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.186",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.142",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.95",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.35",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.295",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.239",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.142",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.95",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.35",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.4",
"versionStartIncluding": "4.8",
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{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16",
"versionStartIncluding": "4.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64/ptrace: Fix stack-out-of-bounds read in regs_get_kernel_stack_nth()\n\nKASAN reports a stack-out-of-bounds read in regs_get_kernel_stack_nth().\n\nCall Trace:\n[ 97.283505] BUG: KASAN: stack-out-of-bounds in regs_get_kernel_stack_nth+0xa8/0xc8\n[ 97.284677] Read of size 8 at addr ffff800089277c10 by task 1.sh/2550\n[ 97.285732]\n[ 97.286067] CPU: 7 PID: 2550 Comm: 1.sh Not tainted 6.6.0+ #11\n[ 97.287032] Hardware name: linux,dummy-virt (DT)\n[ 97.287815] Call trace:\n[ 97.288279] dump_backtrace+0xa0/0x128\n[ 97.288946] show_stack+0x20/0x38\n[ 97.289551] dump_stack_lvl+0x78/0xc8\n[ 97.290203] print_address_description.constprop.0+0x84/0x3c8\n[ 97.291159] print_report+0xb0/0x280\n[ 97.291792] kasan_report+0x84/0xd0\n[ 97.292421] __asan_load8+0x9c/0xc0\n[ 97.293042] regs_get_kernel_stack_nth+0xa8/0xc8\n[ 97.293835] process_fetch_insn+0x770/0xa30\n[ 97.294562] kprobe_trace_func+0x254/0x3b0\n[ 97.295271] kprobe_dispatcher+0x98/0xe0\n[ 97.295955] kprobe_breakpoint_handler+0x1b0/0x210\n[ 97.296774] call_break_hook+0xc4/0x100\n[ 97.297451] brk_handler+0x24/0x78\n[ 97.298073] do_debug_exception+0xac/0x178\n[ 97.298785] el1_dbg+0x70/0x90\n[ 97.299344] el1h_64_sync_handler+0xcc/0xe8\n[ 97.300066] el1h_64_sync+0x78/0x80\n[ 97.300699] kernel_clone+0x0/0x500\n[ 97.301331] __arm64_sys_clone+0x70/0x90\n[ 97.302084] invoke_syscall+0x68/0x198\n[ 97.302746] el0_svc_common.constprop.0+0x11c/0x150\n[ 97.303569] do_el0_svc+0x38/0x50\n[ 97.304164] el0_svc+0x44/0x1d8\n[ 97.304749] el0t_64_sync_handler+0x100/0x130\n[ 97.305500] el0t_64_sync+0x188/0x190\n[ 97.306151]\n[ 97.306475] The buggy address belongs to stack of task 1.sh/2550\n[ 97.307461] and is located at offset 0 in frame:\n[ 97.308257] __se_sys_clone+0x0/0x138\n[ 97.308910]\n[ 97.309241] This frame has 1 object:\n[ 97.309873] [48, 184) \u0027args\u0027\n[ 97.309876]\n[ 97.310749] The buggy address belongs to the virtual mapping at\n[ 97.310749] [ffff800089270000, ffff800089279000) created by:\n[ 97.310749] dup_task_struct+0xc0/0x2e8\n[ 97.313347]\n[ 97.313674] The buggy address belongs to the physical page:\n[ 97.314604] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14f69a\n[ 97.315885] flags: 0x15ffffe00000000(node=1|zone=2|lastcpupid=0xfffff)\n[ 97.316957] raw: 015ffffe00000000 0000000000000000 dead000000000122 0000000000000000\n[ 97.318207] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000\n[ 97.319445] page dumped because: kasan: bad access detected\n[ 97.320371]\n[ 97.320694] Memory state around the buggy address:\n[ 97.321511] ffff800089277b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[ 97.322681] ffff800089277b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[ 97.323846] \u003effff800089277c00: 00 00 f1 f1 f1 f1 f1 f1 00 00 00 00 00 00 00 00\n[ 97.325023] ^\n[ 97.325683] ffff800089277c80: 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3 f3 f3\n[ 97.326856] ffff800089277d00: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n\nThis issue seems to be related to the behavior of some gcc compilers and\nwas also fixed on the s390 architecture before:\n\n commit d93a855c31b7 (\"s390/ptrace: Avoid KASAN false positives in regs_get_kernel_stack_nth()\")\n\nAs described in that commit, regs_get_kernel_stack_nth() has confirmed that\n`addr` is on the stack, so reading the value at `*addr` should be allowed.\nUse READ_ONCE_NOCHECK() helper to silence the KASAN check for this case.\n\n[will: Use \u0027*addr\u0027 as the argument to READ_ONCE_NOCHECK()]"
}
],
"providerMetadata": {
"dateUpdated": "2025-07-28T04:18:33.267Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/64773b3ea09235168a549a195cba43bb867c4a17"
},
{
"url": "https://git.kernel.org/stable/c/67abac27d806e8f9d4226ec1528540cf73af673a"
},
{
"url": "https://git.kernel.org/stable/c/92750bfe7b0d8dbcaf578c091a65eda1c5f9ad38"
},
{
"url": "https://git.kernel.org/stable/c/01f91d415a8375d85e0c7d3615cd4a168308bb7c"
},
{
"url": "https://git.kernel.org/stable/c/21da6d3561f373898349ca7167c9811c020da695"
},
{
"url": "https://git.kernel.org/stable/c/22f935bc86bdfbde04009f05eee191d220cd8c89"
},
{
"url": "https://git.kernel.org/stable/c/422e565b7889ebfd9c8705a3fc786642afe61fca"
},
{
"url": "https://git.kernel.org/stable/c/39dfc971e42d886e7df01371cd1bef505076d84c"
}
],
"title": "arm64/ptrace: Fix stack-out-of-bounds read in regs_get_kernel_stack_nth()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38320",
"datePublished": "2025-07-10T08:14:56.398Z",
"dateReserved": "2025-04-16T04:51:24.004Z",
"dateUpdated": "2025-07-28T04:18:33.267Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-38320\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-10T09:15:25.947\",\"lastModified\":\"2025-07-10T13:17:30.017\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\narm64/ptrace: Fix stack-out-of-bounds read in regs_get_kernel_stack_nth()\\n\\nKASAN reports a stack-out-of-bounds read in regs_get_kernel_stack_nth().\\n\\nCall Trace:\\n[ 97.283505] BUG: KASAN: stack-out-of-bounds in regs_get_kernel_stack_nth+0xa8/0xc8\\n[ 97.284677] Read of size 8 at addr ffff800089277c10 by task 1.sh/2550\\n[ 97.285732]\\n[ 97.286067] CPU: 7 PID: 2550 Comm: 1.sh Not tainted 6.6.0+ #11\\n[ 97.287032] Hardware name: linux,dummy-virt (DT)\\n[ 97.287815] Call trace:\\n[ 97.288279] dump_backtrace+0xa0/0x128\\n[ 97.288946] show_stack+0x20/0x38\\n[ 97.289551] dump_stack_lvl+0x78/0xc8\\n[ 97.290203] print_address_description.constprop.0+0x84/0x3c8\\n[ 97.291159] print_report+0xb0/0x280\\n[ 97.291792] kasan_report+0x84/0xd0\\n[ 97.292421] __asan_load8+0x9c/0xc0\\n[ 97.293042] regs_get_kernel_stack_nth+0xa8/0xc8\\n[ 97.293835] process_fetch_insn+0x770/0xa30\\n[ 97.294562] kprobe_trace_func+0x254/0x3b0\\n[ 97.295271] kprobe_dispatcher+0x98/0xe0\\n[ 97.295955] kprobe_breakpoint_handler+0x1b0/0x210\\n[ 97.296774] call_break_hook+0xc4/0x100\\n[ 97.297451] brk_handler+0x24/0x78\\n[ 97.298073] do_debug_exception+0xac/0x178\\n[ 97.298785] el1_dbg+0x70/0x90\\n[ 97.299344] el1h_64_sync_handler+0xcc/0xe8\\n[ 97.300066] el1h_64_sync+0x78/0x80\\n[ 97.300699] kernel_clone+0x0/0x500\\n[ 97.301331] __arm64_sys_clone+0x70/0x90\\n[ 97.302084] invoke_syscall+0x68/0x198\\n[ 97.302746] el0_svc_common.constprop.0+0x11c/0x150\\n[ 97.303569] do_el0_svc+0x38/0x50\\n[ 97.304164] el0_svc+0x44/0x1d8\\n[ 97.304749] el0t_64_sync_handler+0x100/0x130\\n[ 97.305500] el0t_64_sync+0x188/0x190\\n[ 97.306151]\\n[ 97.306475] The buggy address belongs to stack of task 1.sh/2550\\n[ 97.307461] and is located at offset 0 in frame:\\n[ 97.308257] __se_sys_clone+0x0/0x138\\n[ 97.308910]\\n[ 97.309241] This frame has 1 object:\\n[ 97.309873] [48, 184) \u0027args\u0027\\n[ 97.309876]\\n[ 97.310749] The buggy address belongs to the virtual mapping at\\n[ 97.310749] [ffff800089270000, ffff800089279000) created by:\\n[ 97.310749] dup_task_struct+0xc0/0x2e8\\n[ 97.313347]\\n[ 97.313674] The buggy address belongs to the physical page:\\n[ 97.314604] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14f69a\\n[ 97.315885] flags: 0x15ffffe00000000(node=1|zone=2|lastcpupid=0xfffff)\\n[ 97.316957] raw: 015ffffe00000000 0000000000000000 dead000000000122 0000000000000000\\n[ 97.318207] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000\\n[ 97.319445] page dumped because: kasan: bad access detected\\n[ 97.320371]\\n[ 97.320694] Memory state around the buggy address:\\n[ 97.321511] ffff800089277b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n[ 97.322681] ffff800089277b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n[ 97.323846] \u003effff800089277c00: 00 00 f1 f1 f1 f1 f1 f1 00 00 00 00 00 00 00 00\\n[ 97.325023] ^\\n[ 97.325683] ffff800089277c80: 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3 f3 f3\\n[ 97.326856] ffff800089277d00: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n\\nThis issue seems to be related to the behavior of some gcc compilers and\\nwas also fixed on the s390 architecture before:\\n\\n commit d93a855c31b7 (\\\"s390/ptrace: Avoid KASAN false positives in regs_get_kernel_stack_nth()\\\")\\n\\nAs described in that commit, regs_get_kernel_stack_nth() has confirmed that\\n`addr` is on the stack, so reading the value at `*addr` should be allowed.\\nUse READ_ONCE_NOCHECK() helper to silence the KASAN check for this case.\\n\\n[will: Use \u0027*addr\u0027 as the argument to READ_ONCE_NOCHECK()]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: arm64/ptrace: Se corrige la lectura fuera de los l\u00edmites de la pila en regs_get_kernel_stack_nth() KASAN informa una lectura fuera de los l\u00edmites de la pila en regs_get_kernel_stack_nth(). Rastreo de llamadas: [97.283505] ERROR: KASAN: stack-out-of-bounds in regs_get_kernel_stack_nth+0xa8/0xc8 [ 97.284677] Read of size 8 at addr ffff800089277c10 by task 1.sh/2550 [ 97.285732] [ 97.286067] CPU: 7 PID: 2550 Comm: 1.sh Not tainted 6.6.0+ #11 [ 97.287032] Hardware name: linux,dummy-virt (DT) [ 97.287815] Call trace: [ 97.288279] dump_backtrace+0xa0/0x128 [ 97.288946] show_stack+0x20/0x38 [ 97.289551] dump_stack_lvl+0x78/0xc8 [ 97.290203] print_address_description.constprop.0+0x84/0x3c8 [ 97.291159] print_report+0xb0/0x280 [ 97.291792] kasan_report+0x84/0xd0 [ 97.292421] __asan_load8+0x9c/0xc0 [ 97.293042] regs_get_kernel_stack_nth+0xa8/0xc8 [ 97.293835] process_fetch_insn+0x770/0xa30 [ 97.294562] kprobe_trace_func+0x254/0x3b0 [ 97.295271] kprobe_dispatcher+0x98/0xe0 [ 97.295955] kprobe_breakpoint_handler+0x1b0/0x210 [ 97.296774] call_break_hook+0xc4/0x100 [ 97.297451] brk_handler+0x24/0x78 [ 97.298073] do_debug_exception+0xac/0x178 [ 97.298785] el1_dbg+0x70/0x90 [ 97.299344] el1h_64_sync_handler+0xcc/0xe8 [ 97.300066] el1h_64_sync+0x78/0x80 [ 97.300699] kernel_clone+0x0/0x500 [ 97.301331] __arm64_sys_clone+0x70/0x90 [ 97.302084] invoke_syscall+0x68/0x198 [ 97.302746] el0_svc_common.constprop.0+0x11c/0x150 [ 97.303569] do_el0_svc+0x38/0x50 [ 97.304164] el0_svc+0x44/0x1d8 [ 97.304749] el0t_64_sync_handler+0x100/0x130 [ 97.305500] el0t_64_sync+0x188/0x190 [ 97.306151] [ 97.306475] The buggy address belongs to stack of task 1.sh/2550 [ 97.307461] and is located at offset 0 in frame: [ 97.308257] __se_sys_clone+0x0/0x138 [ 97.308910] [ 97.309241] This frame has 1 object: [ 97.309873] [48, 184) \u0027args\u0027 [ 97.309876] [ 97.310749] The buggy address belongs to the virtual mapping at [ 97.310749] [ffff800089270000, ffff800089279000) created by: [ 97.310749] dup_task_struct+0xc0/0x2e8 [ 97.313347] [ 97.313674] The buggy address belongs to the physical page: [ 97.314604] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14f69a [ 97.315885] flags: 0x15ffffe00000000(node=1|zone=2|lastcpupid=0xfffff) [ 97.316957] raw: 015ffffe00000000 0000000000000000 dead000000000122 0000000000000000 [ 97.318207] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 97.319445] page dumped because: kasan: bad access detected [ 97.320371] [ 97.320694] Memory state around the buggy address: [ 97.321511] ffff800089277b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 97.322681] ffff800089277b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 97.323846] \u0026gt;ffff800089277c00: 00 00 f1 f1 f1 f1 f1 f1 00 00 00 00 00 00 00 00 [ 97.325023] ^ [ 97.325683] ffff800089277c80: 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3 f3 f3 [ 97.326856] ffff800089277d00: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Este problema parece estar relacionado con el comportamiento de algunos compiladores gcc y tambi\u00e9n se solucion\u00f3 en la arquitectura s390 anteriormente: commit d93a855c31b7 (\\\"s390/ptrace: Evitar falsos positivos de KASAN en regs_get_kernel_stack_nth()\\\"). Como se describe en dicha confirmaci\u00f3n, regs_get_kernel_stack_nth() confirm\u00f3 que `addr` est\u00e1 en la pila, por lo que deber\u00eda permitirse la lectura del valor en `*addr`. Use el asistente READ_ONCE_NOCHECK() para silenciar la comprobaci\u00f3n de KASAN en este caso. [Se usar\u00e1 \u0027*addr\u0027 como argumento para READ_ONCE_NOCHECK()]\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/01f91d415a8375d85e0c7d3615cd4a168308bb7c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/21da6d3561f373898349ca7167c9811c020da695\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/22f935bc86bdfbde04009f05eee191d220cd8c89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/39dfc971e42d886e7df01371cd1bef505076d84c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/422e565b7889ebfd9c8705a3fc786642afe61fca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/64773b3ea09235168a549a195cba43bb867c4a17\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/67abac27d806e8f9d4226ec1528540cf73af673a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/92750bfe7b0d8dbcaf578c091a65eda1c5f9ad38\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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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.
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