CVE-2026-53091 Affecting perf package, versions <0:5.14.0-687.47.1.el9_8


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-ORACLE9-PERF-19825851
  • published15 Sept 2026
  • disclosed24 Jun 2026

Introduced: 24 Jun 2026

CVE-2026-53091  (opens in a new tab)

How to fix?

Upgrade Oracle:9 perf to version 0:5.14.0-687.47.1.el9_8 or higher.
This issue was patched in ELSA-2026-67150-0.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

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

net: pull headers in qdisc_pkt_len_segs_init()

Most ndo_start_xmit() methods expects headers of gso packets to be already in skb->head.

net/core/tso.c users are particularly at risk, because tso_build_hdr() does a memcpy(hdr, skb->data, hdr_len);

qdisc_pkt_len_segs_init() already does a dissection of gso packets.

Use pskb_may_pull() instead of skb_header_pointer() to make sure drivers do not have to reimplement this.

Some malicious packets could be fed, detect them so that we can drop them sooner with a new SKB_DROP_REASON_SKB_BAD_GSO drop_reason.

CVSS Base Scores

version 3.1