CVE-2022-48755

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-48755
In the Linux kernel, the following vulnerability has been resolved: powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06 Johan reported the below crash with test_bpf on ppc64 e5500: test_bpf: #296 ALU_END_FROM_LE 64: 0x0123456789abcdef -> 0x67452301 jited:1 Oops: Exception in kernel mode, sig: 4 [#1] BE PAGE_SIZE=4K SMP NR_CPUS=24 QEMU e500 Modules linked in: test_bpf(+) CPU: 0 PID: 76 Comm: insmod Not tainted 5.14.0-03771-g98c2059e008a-dirty #1 NIP: 8000000000061c3c LR: 80000000006dea64 CTR: 8000000000061c18 REGS: c0000000032d3420 TRAP: 0700 Not tainted (5.14.0-03771-g98c2059e008a-dirty) MSR: 0000000080089000 <EE,ME> CR: 88002822 XER: 20000000 IRQMASK: 0 <...> NIP [8000000000061c3c] 0x8000000000061c3c LR [80000000006dea64] .__run_one+0x104/0x17c [test_bpf] Call Trace: .__run_one+0x60/0x17c [test_bpf] (unreliable) .test_bpf_init+0x6a8/0xdc8 [test_bpf] .do_one_initcall+0x6c/0x28c .do_init_module+0x68/0x28c .load_module+0x2460/0x2abc .__do_sys_init_module+0x120/0x18c .system_call_exception+0x110/0x1b8 system_call_common+0xf0/0x210 --- interrupt: c00 at 0x101d0acc <...> ---[ end trace 47b2bf19090bb3d0 ]--- Illegal instruction The illegal instruction turned out to be 'ldbrx' emitted for BPF_FROM_[L|B]E, which was only introduced in ISA v2.06. Guard use of the same and implement an alternative approach for older processors.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c Patch
https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09 Patch
https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf Patch
https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73 Patch
https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c Patch
https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09 Patch
https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf Patch
https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
History

06 Jan 2025, 21:44

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE NVD-CWE-noinfo
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c - () https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c - Patch
References () https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09 - () https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09 - Patch
References () https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf - () https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf - Patch
References () https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73 - () https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73 - Patch
CPE cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

21 Nov 2024, 07:33

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c - () https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c -
References () https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09 - () https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09 -
References () https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf - () https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf -
References () https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73 - () https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73 -
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: powerpc64/bpf: Limite 'ldbrx' a procesadores compatibles con ISA v2.06 Johan informó el siguiente fallo con test_bpf en ppc64 e5500: test_bpf: #296 ALU_END_FROM_LE 64: 0x0123456789abcdef -&gt; 0x67452301 jited:1 Ups: Excepción en modo kernel, sign: 4 [#1] BE PAGE_SIZE=4K SMP NR_CPUS=24 Módulos QEMU e500 vinculados en: test_bpf(+) CPU: 0 PID: 76 Comm: insmod Not tainted 5.14.0- 03771-g98c2059e008a-dirty #1 NIP: 8000000000061c3c LR: 80000000006dea64 CTR: 8000000000061c18 REGS: c0000000032d3420 TRAP: 0700 No contaminado (5.14.0-0 3771-g98c2059e008a-dirty) MSR: 0000000080089000 CR: 88002822 XER: 20000000 IRQMASK : 0 &lt;...&gt; NIP [8000000000061c3c] 0x8000000000061c3c LR [80000000006dea64] .__run_one+0x104/0x17c [test_bpf] Seguimiento de llamadas: .__run_one+0x60/0x17c [test_bpf] (no confiable). test_bpf_init+0x6a8/0xdc8 [test_bpf] . do_one_initcall+0x6c/0x28c .do_init_module+0x68/0x28c .load_module+0x2460/0x2abc .__do_sys_init_module+0x120/0x18c .system_call_exception+0x110/0x1b8 system_call_common+0xf0/0x210 --- interrupción : c00 en 0x101d0acc &lt;...&gt; --- [ end trace 47b2bf19090bb3d0 ]--- Instrucción ilegal La instrucción ilegal resultó ser 'ldbrx' emitida para BPF_FROM_[L|B]E, que solo se introdujo en ISA v2.06. Proteger el uso de los mismos e implementar un enfoque alternativo para procesadores más antiguos.

20 Jun 2024, 12:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-06-20 12:15

Updated : 2025-01-06 21:44

NVD link : CVE-2022-48755

Mitre link : CVE-2022-48755

CVE.ORG link : CVE-2022-48755

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo