CVE-2023-54284
Published Dec 30, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: media: av7110: prevent underflow in write_ts_to_decoder() The buf[4] value comes from the user via ts_play(). It is a value in the u8 range. The final length we pass to av7110_ipack_instant_repack() is "len - (buf[4] + 1) - 4" so add a check to ensure that the length is not negative. It's not clear that passing a negative len value does anything bad necessarily, but it's not best practice. With the new bounds checking the "if (!len)" condition is no longer possible or required so remove that.
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References
Other References
https://git.kernel.org/stable/c/423350af9e27f005611bd881b1df2cab66de943d
https://git.kernel.org/stable/c/620b983589e0223876bf1463b01100a9c67b56ba
https://git.kernel.org/stable/c/6606e2404ee9e20a3ae5b42fc3660d41b739ed3e
https://git.kernel.org/stable/c/6680af5be9f08d830567e9118f76d3e64684db8f
https://git.kernel.org/stable/c/77eeb4732135c18c2fdfab80839645b393f3e774
https://git.kernel.org/stable/c/7b93ab60fe9ed04be0ff155bc30ad39dea23e22b
https://git.kernel.org/stable/c/86ba65e5357bfbb6c082f68b265a292ee1bdde1d
https://git.kernel.org/stable/c/ca4ce92e3ec9fd3c7c936b912b95c53331d5159c
https://git.kernel.org/stable/c/eed9496a0501357aa326ddd6b71408189ed872eb
Frequently Asked Questions
What is CVE-2023-54284? +
In the Linux kernel, the following vulnerability has been resolved:
media: av7110: prevent underflow in write_ts_to_decoder()
The buf[4] value comes from the user via ts_play(). It is a value in
the u8 range. The final length we pass to av7110_ipack_instant_repack()
is "len - (buf[4] + 1) - 4" so add a check to ensure that the length is
not negative. It's not clear that passing a negative len value does
anything bad necessarily, but it's not best practice.
With the new bounds checking the "if (!len)" condition is no longer
possible or required so remove that.
How do I check if I'm vulnerable to CVE-2023-54284? +
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.