What is CVE-2022-49172?

CVE-2022-49172 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, affecting Linux kernel versions from 2.6.12 onward and patched in 5.16.19, 5.17.2 and 5.18. CVE-2022-49172 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49172?

CVE-2022-49172 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Is there a patch available for CVE-2022-49172?

Yes, CVE-2022-49172 has been patched. Fixed versions include 5.16.19, 5.17.2 and 5.18. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49172 actively exploited?

CVE-2022-49172 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49172

High

In the Linux kernel, the following vulnerability has been resolved: parisc: Fix non-access data TLB cache flush faults When a page is not present, we get non-access data TLB faults from the fdc and fic instructions in flush_user_dcache_range_asm and flush_user_icache_range_asm. When these occur, the cache line is not invalidated and potentially we get memory corruption. The problem was hidden by the nullification of the flush instructions. These faults also affect performance. With pa8800/pa8900 processors, there will be 32 faults per 4 KB page since the cache line is 128 bytes. There will be more faults with earlier processors. The problem is fixed by using flush_cache_pages(). It does the flush using a tmp alias mapping. The flush_cache_pages() call in flush_cache_range() flushed too large a range. V2: Remove unnecessary preempt_disable() and preempt_enable() calls.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-09-23

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 2.6.12 and later are affected. Fixed in 5.16.19, 5.17.2, 5.18 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 5.16.19 5.16.x ✓ 5.17.2 5.17.x ✓ 5.18

References

The following references provide additional information about CVE-2022-49172 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/b3d6adb3a49d82e4e557c5fc16f50c9ff731da5d
Patch
Kernel patch commit
https://git.kernel.org/stable/c/ddca4b82027e2a66333dd40fab21a4beff435c7e
Patch
Kernel patch commit
https://git.kernel.org/stable/c/f839e5f1cef36ce268950c387129b1bfefdaebc9
Patch

Details

CVE ID CVE-2022-49172

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-09-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49172?

CVE-2022-49172 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 . It affects Linux kernel versions from 2.6.12 onward and has been patched in 5.16.19, 5.17.2 and 5.18. CVE-2022-49172 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49172?

CVE-2022-49172 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
Is there a patch available for CVE-2022-49172?

Yes — CVE-2022-49172 has been patched. Fixed versions include 5.16.19, 5.17.2 and 5.18. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49172 actively exploited?

No — CVE-2022-49172 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.