CVE-2023-54284

media: av7110: prevent underflow in write_ts_to_decoder()

HIGH

7.1

CVSS Score

Published: December 30, 2025 at 12:23 PM UTC

Updated: August 5, 2026 at 10:24 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.1

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.31 ≤ v < 4.14.3152.6.31 ≤ v < 4.19.2832.6.31 ≤ v < 5.10.2112.6.31 ≤ v < 5.15.1112.6.31 ≤ v < 5.4.2432.6.31 ≤ v < 6.1.282.6.31 ≤ v < 6.2.152.6.31 ≤ v < 6.3.22.6.31 ≤ v < 6.42.6.31fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf

Vendor states this is fixed in 423350af9e27f005611bd881b1df2cab66de943d (fixed)

Vendor states this is fixed in 620b983589e0223876bf1463b01100a9c67b56ba (fixed)

Vendor states this is fixed in 6606e2404ee9e20a3ae5b42fc3660d41b739ed3e (fixed)

Vendor states this is fixed in 6680af5be9f08d830567e9118f76d3e64684db8f (fixed)

Vendor states this is fixed in 77eeb4732135c18c2fdfab80839645b393f3e774 (fixed)

Vendor states this is fixed in 7b93ab60fe9ed04be0ff155bc30ad39dea23e22b (fixed)

Vendor states this is fixed in 86ba65e5357bfbb6c082f68b265a292ee1bdde1d (fixed)

Vendor states this is fixed in ca4ce92e3ec9fd3c7c936b912b95c53331d5159c (fixed)

Vendor states this is fixed in eed9496a0501357aa326ddd6b71408189ed872eb (fixed)

Vendor states this is fixed in 2.6.31 (unaffected)

Vendor states this is fixed in 4.14.315 (unaffected)

Vendor states this is fixed in 4.19.283 (unaffected)