ice: add missing xa_destroy for sched_node_ids

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-97979
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:25 UTC
Updated2026-09-25 11:17:25 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ice: add missing xa_destroy for sched_node_ids Commit 16dfa49406bc ("ice: Introduce new parameters in ice_sched_node") added a sched_node_ids xarray to the port info structure, but never called xa_destroy on it. Since xarrays can allocate internal memory, this can result in a memory leak even if every element in the xarray has been removed. The xarray is currently embedded in the port_info structure. This appears to have been done because its use is within functions that take the port_info as a primary argument. However, this complicates managing the lifecycle of the field. The port_info structure is allocated in ice_init_hw() using devm, and it is not released until the devm cleanup when the driver is unloaded. The ice_init_hw() function is called in many places, including devlink reload, and possibly during DDP load after updating the Tx scheduler layout. Adding a call of xa_destroy to the ice_deinit_hw() causes Sashiko to raise multiple concerns due to potential ordering issues and possible ways that port_info could be a dangling reference. To handle this, move the sched_node_ids out of port_info and into the hw structure. All users of the array already have a pointer to hw anyways, and there is only one sched_node_ids per adapter. While here, remove the overly verbose comment explaining the nature of the sched_node_ids xarray. Add the missing xa_destroy to the cleanup path and to ice_deinit_hw(), ensuring that we properly release the xarray memory. This was caught by Sashiko during development of unrelated code.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.053970000 (date 2026-09-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 16dfa49406bc5e1f4cbb115027cbd719d7e6c930 44cdd6b7e036303f7fecf841cf23c05a4a4faf2d git Not specified
CNA Linux Linux affected 16dfa49406bc5e1f4cbb115027cbd719d7e6c930 f5463bc124c0d6f922e272336584730c5c61c4f1 git Not specified
CNA Linux Linux affected 16dfa49406bc5e1f4cbb115027cbd719d7e6c930 d6f38fb12069fb1edf762962b5fcf3f42d643b47 git Not specified
CNA Linux Linux affected 16dfa49406bc5e1f4cbb115027cbd719d7e6c930 53432c4c3e869076350aef319534431af8ba99c1 git Not specified
CNA Linux Linux affected a388961be5ed8ee037ac68220e389bc4e9339a39 git Not specified
CNA Linux Linux affected 6.1.95 6.2 semver Not specified
CNA Linux Linux affected 6.2 Not specified
CNA Linux Linux unaffected 6.2 semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d6f38fb12069fb1edf762962b5fcf3f42d643b47 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f5463bc124c0d6f922e272336584730c5c61c4f1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/53432c4c3e869076350aef319534431af8ba99c1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/44cdd6b7e036303f7fecf841cf23c05a4a4faf2d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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