Missing Release of Resource after Effective Lifetime Affecting perf-debuginfo package, versions <1:6.1.175-219.357.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.54% (42nd percentile)

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  • Snyk IDSNYK-AMZN2023-PERFDEBUGINFO-17946878
  • published11 Jul 2026
  • disclosed24 Jun 2026

Introduced: 24 Jun 2026

NewCVE-2026-52981  (opens in a new tab)
CWE-772  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perf-debuginfo to version 1:6.1.175-219.357.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1882.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf-debuginfo package and not the perf-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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

neigh: let neigh_xmit take skb ownership

neigh_xmit always releases the skb, except when no neighbour table is found. But even the first added user of neigh_xmit (mpls) relied on neigh_xmit to release the skb (or queue it for tx).

sashiko reported: If neigh_xmit() is called with an uninitialized neighbor table (for example, NEIGH_ND_TABLE when IPv6 is disabled), it returns -EAFNOSUPPORT and bypasses its internal out_kfree_skb error path. Because the return value of neigh_xmit() is ignored here, does this leak the SKB?

Assume full ownership and remove the last code path that doesn't xmit or free skb.

CVSS Base Scores

version 3.1