CVE-2023-53803
Published Dec 9, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() A fix for: BUG: KASAN: slab-out-of-bounds in ses_enclosure_data_process+0x949/0xe30 [ses] Read of size 1 at addr ffff88a1b043a451 by task systemd-udevd/3271 Checking after (and before in next loop) addl_desc_ptr[1] is sufficient, we expect the size to be sanitized before first access to addl_desc_ptr[1]. Make sure we don't walk beyond end of page.
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References
Other References
https://git.kernel.org/stable/c/0dfe68394cbe1d4fe579fb325ecc813c50528c5a
https://git.kernel.org/stable/c/2b28a7d261cb309912596d6a2d383ca370483527
https://git.kernel.org/stable/c/467afb1dd630d8c6d172bd6cacc125199b5f4f2d
https://git.kernel.org/stable/c/799e8dd2022d2e13f0c5c1906b40ceca07a23349
https://git.kernel.org/stable/c/9b4f5028e493cb353a5c8f5c45073eeea0303abd
https://git.kernel.org/stable/c/9e5c7d52085b8c84bc82a261580f0eb170039325
https://git.kernel.org/stable/c/da1a955c48a16e16e925d6544793914e52a6fa51
https://git.kernel.org/stable/c/e4dd25da784b2e07dbfbf04509afa4c5a1375227
Frequently Asked Questions
What is CVE-2023-53803? +
In the Linux kernel, the following vulnerability has been resolved:
scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
A fix for:
BUG: KASAN: slab-out-of-bounds in ses_enclosure_data_process+0x949/0xe30 [ses]
Read of size 1 at addr ffff88a1b043a451 by task systemd-udevd/3271
Checking after (and before in next loop) addl_desc_ptr[1] is sufficient, we
expect the size to be sanitized before first access to addl_desc_ptr[1].
Make sure we don't walk beyond end of page.
How do I check if I'm vulnerable to CVE-2023-53803? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.