What is CVE-2022-48755?

CVE-2022-48755 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.8 onward and patched in 5.10.96, 5.15.19, 5.16.5 and others. CVE-2022-48755 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-48755?

CVE-2022-48755 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-48755?

Yes, CVE-2022-48755 has been patched. Fixed versions include 5.10.96, 5.15.19, 5.16.5 and others. If you are running Linux kernel 4.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-48755 actively exploited?

CVE-2022-48755 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-48755

Medium

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.

Package Linux Kernel

Published 2024-06-20

Last modified 2025-01-06

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 4.8 and later are affected. Fixed in 5.10.96, 5.15.19, 5.16.5, 5.17 and their respective stable series.

Affected from

≥ 4.8

Fixed in

✓ 5.10.96 5.10.x ✓ 5.15.19 5.15.x ✓ 5.16.5 5.16.x ✓ 5.17

References

4 total

Kernel Git
https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c

Patch
Kernel Git
https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09

Patch
Kernel Git
https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf

Patch
Kernel Git
https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73

Patch

Details

CVE ID CVE-2022-48755

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-06-20

Modified 2025-01-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-48755?

CVE-2022-48755 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.8 onward and has been patched in 5.10.96, 5.15.19, 5.16.5 and others. CVE-2022-48755 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-48755?

CVE-2022-48755 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-48755?

Yes. CVE-2022-48755 has been patched. Fixed versions include 5.10.96, 5.15.19, 5.16.5 and others. If you are running Linux kernel 4.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-48755 actively exploited?

No. CVE-2022-48755 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.