# ALSA-2026:7671: Security update for 2 packages

ALSA-2026:7671, released April 13, 2026, fixes 5 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/alsa-2026-7671
- Platform: Linux
- Released: Apr 13, 2026
- Priority: High (Closes CVE-2026-33416, high severity)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/ALSA-2026:7671

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [firefox](https://patchblox.com/security/data/product/linux/firefox.md) | almalinux 9 | 140.9.1-1.el9_7.alma.1 |
| [firefox-x11](https://patchblox.com/security/data/product/linux/firefox-x11.md) | almalinux 9 | 140.9.1-1.el9_7.alma.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-33416](https://patchblox.com/security/data/cve/CVE-2026-33416.md) | High | LIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE` | 8.8 | 0.0107 |  |
| [CVE-2026-33636](https://patchblox.com/security/data/cve/CVE-2026-33636.md) | High | LIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on AArch64 | 8.8 | 0.0075 |  |
| [CVE-2026-5732](https://patchblox.com/security/data/cve/CVE-2026-5732.md) | High | Incorrect boundary conditions, integer overflow in the Graphics: Text component | 8.8 | 0.0036 |  |
| [CVE-2026-5731](https://patchblox.com/security/data/cve/CVE-2026-5731.md) | High | Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 | 9.8 | 0.0035 |  |
| [CVE-2026-5734](https://patchblox.com/security/data/cve/CVE-2026-5734.md) | High | Memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 | 9.8 | 0.0034 |  |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo