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.
Affected versions
Linux kernel versions
2.6.31
and later are affected. Fixed in
4.14.315,
4.19.283,
5.4.243,
5.10.211,
5.15.111,
6.1.28,
6.2.15,
6.3.2,
6.4
and their respective stable series.
References
The following references provide additional information about CVE-2023-54284 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/423350af9e27f005611bd881b1df2cab66de943d
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PatchKernel patch commithttps://git.kernel.org/stable/c/620b983589e0223876bf1463b01100a9c67b56ba
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PatchKernel patch commithttps://git.kernel.org/stable/c/6606e2404ee9e20a3ae5b42fc3660d41b739ed3e
Frequently asked questions
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What is CVE-2023-54284?
CVE-2023-54284 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.31 onward and has been patched in 4.14.315, 4.19.283, 5.4.243 and others. CVE-2023-54284 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-54284?
Yes — CVE-2023-54284 has been patched. Fixed versions include 4.14.315, 4.19.283, 5.4.243 and others. If you are running Linux kernel 2.6.31 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-54284 actively exploited?
No — CVE-2023-54284 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.