CVE-2023-52835
perf/core: Bail out early if the request AUX area is out of bound
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
perf/core: Bail out early if the request AUX area is out of bound
When perf-record with a large AUX area, e.g 4GB, it fails with:
#perf record -C 0 -m ,4G -e arm_spe_0// -- sleep 1
failed to mmap with 12 (Cannot allocate memory)
and it reveals a WARNING with __alloc_pages():
------------[ cut here ]------------
WARNING: CPU: 44 PID: 17573 at mm/page_alloc.c:5568 __alloc_pages+0x1ec/0x248
Call trace:
__alloc_pages+0x1ec/0x248
__kmalloc_large_node+0xc0/0x1f8
__kmalloc_node+0x134/0x1e8
rb_alloc_aux+0xe0/0x298
perf_mmap+0x440/0x660
mmap_region+0x308/0x8a8
do_mmap+0x3c0/0x528
vm_mmap_pgoff+0xf4/0x1b8
ksys_mmap_pgoff+0x18c/0x218
__arm64_sys_mmap+0x38/0x58
invoke_syscall+0x50/0x128
el0_svc_common.constprop.0+0x58/0x188
do_el0_svc+0x34/0x50
el0_svc+0x34/0x108
el0t_64_sync_handler+0xb8/0xc0
el0t_64_sync+0x1a4/0x1a8
'rb->aux_pages' allocated by kcalloc() is a pointer array which is used to
maintains AUX trace pages. The allocated page for this array is physically
contiguous (and virtually contiguous) with an order of 0..MAX_ORDER. If the
size of pointer array crosses the limitation set by MAX_ORDER, it reveals a
WARNING.
So bail out early with -ENOMEM if the request AUX area is out of bound,
e.g.:
#perf record -C 0 -m ,4G -e arm_spe_0// -- sleep 1
failed to mmap with 12 (Cannot allocate memory)
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf/core: rescate anticipado si el área AUX de la solicitud está fuera de los límites. Cuando perf-record con un área AUX grande, por ejemplo, 4 GB, falla con: #perf record -C 0 -m, 4G -e arm_spe_0// -- el sueño 1 no pudo mapear con 12 (no se puede asignar memoria) y revela una ADVERTENCIA con __alloc_pages(): ------------[ cortar aquí ] ------------ ADVERTENCIA: CPU: 44 PID: 17573 en mm/page_alloc.c:5568 __alloc_pages+0x1ec/0x248 Rastreo de llamadas: __alloc_pages+0x1ec/0x248 __kmalloc_large_node+0xc0/0x1f8 __kmalloc_node+0x134/ 0x1e8 rb_alloc_aux+0xe0/0x298 perf_mmap+0x440/0x660 mmap_region+0x308/0x8a8 do_mmap+0x3c0/0x528 vm_mmap_pgoff+0xf4/0x1b8 ksys_mmap_pgoff+0x18c/0x218 sys_mmap+0x38/0x58 invoke_syscall+0x50/0x128 el0_svc_common.constprop.0+0x58/0x188 do_el0_svc+0x34/0x50 el0_svc+0x34/0x108 el0t_64_sync_handler+0xb8/0xc0 el0t_64_sync+0x1a4/0x1a8 'rb->aux_pages' asignado por kcalloc() es una matriz de punteros que se utiliza para mantener páginas de seguimiento AUX. La página asignada para esta matriz es físicamente contigua (y virtualmente contigua) con un orden de 0..MAX_ORDER. Si el tamaño de la matriz de punteros cruza la limitación establecida por MAX_ORDER, se revela una ADVERTENCIA. Por lo tanto, salve pronto con -ENOMEM si el área AUX de la solicitud está fuera de los límites, por ejemplo: #perf record -C 0 -m ,4G -e arm_spe_0// -- el sueño 1 no pudo asignar mm con 12 (no se puede asignar memoria)
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-05-21 CVE Reserved
- 2024-05-21 CVE Published
- 2024-05-22 EPSS Updated
- 2024-11-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
CAPEC
References (10)
URL | Tag | Source |
---|
URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
https://access.redhat.com/security/cve/CVE-2023-52835 | 2024-07-08 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2282735 | 2024-07-08 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 4.19.300 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.300" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.4.262 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.262" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.10.202 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.202" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.15.140 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.140" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.1.64 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.64" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.5.13 Search vendor "Linux" for product "Linux Kernel" and version " < 6.5.13" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.6.3 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.3" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.7 Search vendor "Linux" for product "Linux Kernel" and version " < 6.7" | en |
Affected
|