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CVE-2023-54284

HIGHCVSS 7.1/10EPSS 0.20%

Last modified

CVE-2023-54284 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.1/10

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

EPSS Probability
0.20%

10.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf, < 6680af5be9f08d830567e9118f76d3e64684db8f; >= fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf, < 6606e2404ee9e20a3ae5b42fc3660d41b739ed3e; >= fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf, < 620b983589e0223876bf1463b01100a9c67b56ba; >= fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf, < 86ba65e5357bfbb6c082f68b265a292ee1bdde1d; >= fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf, < ca4ce92e3ec9fd3c7c936b912b95c53331d5159c; >= fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf, < 423350af9e27f005611bd881b1df2cab66de943d; >= fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf, < 77eeb4732135c18c2fdfab80839645b393f3e774; >= fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf, < 7b93ab60fe9ed04be0ff155bc30ad39dea23e22b; >= fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf, < eed9496a0501357aa326ddd6b71408189ed872eb
LinuxLinux2.6.31

References

Timeline

Published
Last Modified
Status
Deferred

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 severe is CVE-2023-54284?
CVE-2023-54284 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.
How do I fix CVE-2023-54284?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST