CVE-2023-52621
bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers
These three bpf_map_{lookup,update,delete}_elem() helpers are also
available for sleepable bpf program, so add the corresponding lock
assertion for sleepable bpf program, otherwise the following warning
will be reported when a sleepable bpf program manipulates bpf map under
interpreter mode (aka bpf_jit_enable=0):
WARNING: CPU: 3 PID: 4985 at kernel/bpf/helpers.c:40 ......
CPU: 3 PID: 4985 Comm: test_progs Not tainted 6.6.0+ #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) ......
RIP: 0010:bpf_map_lookup_elem+0x54/0x60
......
Call Trace:
<TASK>
? __warn+0xa5/0x240
? bpf_map_lookup_elem+0x54/0x60
? report_bug+0x1ba/0x1f0
? handle_bug+0x40/0x80
? exc_invalid_op+0x18/0x50
? asm_exc_invalid_op+0x1b/0x20
? __pfx_bpf_map_lookup_elem+0x10/0x10
? rcu_lockdep_current_cpu_online+0x65/0xb0
? rcu_is_watching+0x23/0x50
? bpf_map_lookup_elem+0x54/0x60
? __pfx_bpf_map_lookup_elem+0x10/0x10
___bpf_prog_run+0x513/0x3b70
__bpf_prog_run32+0x9d/0xd0
? __bpf_prog_enter_sleepable_recur+0xad/0x120
? __bpf_prog_enter_sleepable_recur+0x3e/0x120
bpf_trampoline_6442580665+0x4d/0x1000
__x64_sys_getpgid+0x5/0x30
? do_syscall_64+0x36/0xb0
entry_SYSCALL_64_after_hwframe+0x6e/0x76
</TASK>
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: verifique rcu_read_lock_trace_held() antes de llamar a los ayudantes de mapas de bpf. Estos tres ayudantes de bpf_map_{lookup,update,delete}_elem() también están disponibles para el programa bpf que se puede dormir, así que agregue el bloqueo correspondiente. aserción para el programa bpf con capacidad para dormir; de lo contrario, se informará la siguiente advertencia cuando un programa bpf con capacidad para dormir manipule el mapa bpf en modo intérprete (también conocido como bpf_jit_enable=0): ADVERTENCIA: CPU: 3 PID: 4985 en kernel/bpf/helpers.c:40. ..... CPU: 3 PID: 4985 Comm: test_progs Not tainted 6.6.0+ #2 Nombre del hardware: PC estándar QEMU (i440FX + PIIX, 1996) ...... RIP: 0010:bpf_map_lookup_elem+0x54/0x60 ...... Seguimiento de llamadas: ? __advertir+0xa5/0x240 ? bpf_map_lookup_elem+0x54/0x60? report_bug+0x1ba/0x1f0? handle_bug+0x40/0x80? exc_invalid_op+0x18/0x50? asm_exc_invalid_op+0x1b/0x20? __pfx_bpf_map_lookup_elem+0x10/0x10 ? rcu_lockdep_current_cpu_online+0x65/0xb0? rcu_is_watching+0x23/0x50? bpf_map_lookup_elem+0x54/0x60? __pfx_bpf_map_lookup_elem+0x10/0x10 ___bpf_prog_run+0x513/0x3b70 __bpf_prog_run32+0x9d/0xd0 ? __bpf_prog_enter_sleepable_recur+0xad/0x120 ? __bpf_prog_enter_sleepable_recur+0x3e/0x120 bpf_trampoline_6442580665+0x4d/0x1000 __x64_sys_getpgid+0x5/0x30 ? do_syscall_64+0x36/0xb0 entrada_SYSCALL_64_after_hwframe+0x6e/0x76
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-03-06 CVE Reserved
- 2024-03-26 CVE Published
- 2024-03-27 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-413: Improper Resource Locking
CAPEC
References (6)
URL | Tag | Source |
---|
URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
https://access.redhat.com/security/cve/CVE-2023-52621 | 2024-11-12 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2271690 | 2024-11-12 |
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" | < 6.1.77 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.77" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.6.16 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.16" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.7.4 Search vendor "Linux" for product "Linux Kernel" and version " < 6.7.4" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.8 Search vendor "Linux" for product "Linux Kernel" and version " < 6.8" | en |
Affected
|