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Information Exposure The advisory has been revoked - it doesn't affect any version of package rv  (opens in a new tab)

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  • Snyk IDSNYK-RHEL10-RV-17503393
  • published26 Jun 2026
  • disclosed24 Jun 2026
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Introduced: 24 Jun 2026

CVE-2026-53076  (opens in a new tab)
CWE-200  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rv package and not the rv package as distributed by RHEL.

In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix OOB in pcpu_init_value

An out-of-bounds read occurs when copying element from a BPF_MAP_TYPE_CGROUP_STORAGE map to another pcpu map with the same value_size that is not rounded up to 8 bytes.

The issue happens when:

  1. A CGROUP_STORAGE map is created with value_size not aligned to 8 bytes (e.g., 4 bytes)
  2. A pcpu map is created with the same value_size (e.g., 4 bytes)
  3. Update element in 2 with data in 1

pcpu_init_value assumes that all sources are rounded up to 8 bytes, and invokes copy_map_value_long to make a data copy, However, the assumption doesn't stand since there are some cases where the source may not be rounded up to 8 bytes, e.g., CGROUP_STORAGE, skb->data. the verifier verifies exactly the size that the source claims, not the size rounded up to 8 bytes by kernel, an OOB happens when the source has only 4 bytes while the copy size(4) is rounded up to 8.