CVE-2026-72223
CVE-2026-72223: 1 tracked advisory record across Red Hat. Compare vendor sources.
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Red Hat
1 advisory- Advisory severityMedium5.5
Medium [CVE-2026-72223] Free arena sub-allocations on discover_arenas error path
CVE-2026-72223Source published Source updated
In the Linux kernel, the following vulnerability has been resolved: nvdimm/btt: Free arena sub-allocations on discover_arenas() error path Memory allocated by btt_freelist_init(), btt_rtt_init(), and btt_maplocks_init() is not freed on some discover_arenas() error paths. This leaks memory when arena discovery fails. Add the missing kfree() calls to release the allocations before returning an error. [ as: commit message and log edits ] This vulnerability occurs when the `discover_arenas()` function encounters an error, failing to properly deallocate memory. Specifically, memory allocated by sub-functions like `btt_freelist_init()` is not released, leading to a memory leak. This can result in system instability or denial of service over time due to resource exhaustion. Red Hat severity…
- Affected products in this advisory
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat package: kernel-rt
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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