7.5

CVE-2026-89511: linux

CVSS: 7.5v3.1HighReceived
AliasesUBUNTU-CVE-2026-89511DEBIAN-CVE-2026-89511
Published 11-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-89511 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.8% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.71%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 11
OPENSUSE-SU-2026:11880-1OPENSUSE-SU-2026:22091-1SUSE-SU-2026:24179-1SUSE-SU-2026:24181-1SUSE-SU-2026:24182-1SUSE-SU-2026:24184-1

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: qede: Fix NULL pointer dereference in TPA fragment processing Under memory pressure, the qede driver encounters NULL pointer dereferences when processing TPA continuation fragments. Commit 8a8633978b84 ("qede: Add build_skb() support.") accidentally dropped the assignment of tpa_info->buffer.data in qede_tpa_start(). When memory pressure causes an SKB allocation failure in qede_tpa_start(), the driver sets tpa_start_fail = true and attempts to recycle the physical page later in qede_tpa_end() via qede_reuse_page(). However, because buffer.data was left uninitialized (NULL), qede_reuse_page() pushes a "ghost" BD (valid DMA mapping but NULL data pointer) back into the active Rx ring. The next time the hardware uses this ring slot, it passes a NULL page to qede_fill_frag_skb(), causing a kernel panic. Example crash from production system: BUG: unable to handle kernel NULL pointer dereference at 0x8 RIP: qede_fill_frag_skb+0x96/0x430 [qede] Call Trace: qede_rx_int+0xb06/0x1de0 qede_poll+0x2f4/0x6c0 __napi_poll+0x2d/0x130 Fix the root cause by restoring the tpa_info->buffer.data assignment in qede_tpa_start(), ensuring valid pages are correctly tracked and recycled. Additionally, update the stale comment for struct qede_agg_info::buffer to reflect its current usage.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

-0.01 pp

From 0.72% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.71%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu165 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 8a8633978b842c88fbcfe00d4e5dde96048f630e, < e2214e2793154b745436e46c6a9a7985d9b3781d | ≥ 8a8633978b842c88fbcfe00d4e5dde96048f630e, < dd8bc0a9d87d2b048711edd17ba7286432edd285 | ≥ 8a8633978b842c88fbcfe00d4e5dde96048f630e, < fa7c9bd2c4a8de167e2fb32968ca4d91dd774375 | ≥ 8a8633978b842c88fbcfe00d4e5dde96048f630e, < a5e1fdc126ab337d601d1a00cc4b47910679d005 | ≥ 8a8633978b842c88fbcfe00d4e5dde96048f630e, < 7f911e208b3ca2c76d9f2bbba1f54b9403568c10 | ≥ 8a8633978b842c88fbcfe00d4e5dde96048f630e, < 2a952fb1b20d83e83ca852773e6188511f7d2191 | ≥ 8a8633978b842c88fbcfe00d4e5dde96048f630e, < f5c8619ccbd70102642120c4c6fda1c048a555fd | ≥ 8a8633978b842c88fbcfe00d4e5dde96048f630e, < 06aa3d26327f24edd039ff249672fdf6f2ba5695 | 4.18

3 vendors · 168 products

References

13 links
Show all 13 references