Bug 2492272 (CVE-2026-53007) - CVE-2026-53007 kernel: ice: fix potential NULL pointer deref in error path of ice_set_ringparam()
Summary: CVE-2026-53007 kernel: ice: fix potential NULL pointer deref in error path of...
Keywords:
Status: NEW
Alias: CVE-2026-53007
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-24 18:02 UTC by OSIDB Bzimport
Modified: 2026-06-25 13:43 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-06-24 18:02:09 UTC
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.

Comment 1 Mauro Matteo Cascella 2026-06-25 13:36:50 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062448-CVE-2026-53007-7981@gregkh/T


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