What is CVE-2023-53820?

CVE-2023-53820 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 4.19.257 onward and patched in 4.19.312, 5.4.274, 5.10.173 and others. CVE-2023-53820 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53820?

CVE-2023-53820 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2023-53820?

Yes, CVE-2023-53820 has been patched. Fixed versions include 4.19.312, 5.4.274, 5.10.173 and others. If you are running Linux kernel 4.19.257 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53820 actively exploited?

CVE-2023-53820 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53820

In the Linux kernel, the following vulnerability has been resolved: loop: loop_set_status_from_info() check before assignment In loop_set_status_from_info(), lo->lo_offset and lo->lo_sizelimit should be checked before reassignment, because if an overflow error occurs, the original correct value will be changed to the wrong value, and it will not be changed back. More, the original patch did not solve the problem, the value was set and ioctl returned an error, but the subsequent io used the value in the loop driver, which still caused an alarm: loop_handle_cmd do_req_filebacked loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset; lo_rw_aio cmd->iocb.ki_pos = pos

Package Linux Kernel

Published 2025-12-09

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 4.19.257, 5.4.212, 5.10.140, 5.15.64, 4.9.327, 4.14.292, 5.19.6, 6.0 and later are affected. Fixed in 4.19.312, 5.4.274, 5.10.173, 5.15.100, 6.1.18, 6.2.5, 6.3 and their respective stable series.

Affected from

≥ 4.19.257 ≥ 5.4.212 ≥ 5.10.140 ≥ 5.15.64 ≥ 4.9.327 ≥ 4.14.292 ≥ 5.19.6 ≥ 6.0

Fixed in

✓ 4.19.312 4.19.x ✓ 5.4.274 5.4.x ✓ 5.10.173 5.10.x ✓ 5.15.100 5.15.x ✓ 6.1.18 6.1.x ✓ 6.2.5 6.2.x ✓ 6.3

References

The following references provide additional information about CVE-2023-53820 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/258809bf22bf71d53247856f374f2b1d055f2fd4
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2ea7077748e5d7cc64f1c31342c802fe66ea7426
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3e7d0968203d668af6036b9f9199c7b62c8a3581
Patch

9 patch commits total View all on NVD

Frequently asked questions

What is CVE-2023-53820?

CVE-2023-53820 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.19.257 onward and has been patched in 4.19.312, 5.4.274, 5.10.173 and others. CVE-2023-53820 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2023-53820?

Yes — CVE-2023-53820 has been patched. Fixed versions include 4.19.312, 5.4.274, 5.10.173 and others. If you are running Linux kernel 4.19.257 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53820 actively exploited?

No — CVE-2023-53820 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.