CVE-2026-53151

Aliases:UBUNTU-CVE-2026-53151DEBIAN-CVE-2026-53151CGA-6333-jg73-6m9rCGA-6f42-xm53-h6c4CGA-73cq-5q7g-w364CGA-cg5p-wfpp-7wwgCGA-ch76-cch3-rh8qCGA-cp4p-whjv-5vxvCGA-f4vh-c4c4-mcxcCGA-h4pp-9p9j-gwhcCGA-jv9v-p594-m775CGA-m7jx-4v39-5jjgCGA-q5m6-mqw9-m566CGA-r99j-36xw-wr6jCGA-xp7h-59g8-3m5v
Advisory lineage Upstream: 0 Downstream: 18
Analyzed
Published: 25 Jun 2026, 08:38
Last modified:05 Aug 2026, 12:33

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (cve.org)
EPSS Score
0.46% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Jun 2026, 08:38
Published
Vulnerability first disclosed
05 Aug 2026, 12:33
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix the ACK parser to extract the SACK table for parsing Fix modification of the received skbuff in rxrpc_input_soft_acks() and a potential incorrect access of the buffer in a fragmented UDP packet (the packet would probably have to be deliberately pre-generated as fragmented) when AF_RXRPC tries to extract the contents of the SACK table by copying out the contents of the SACK table into a buffer before attempting to parse AF_RXRPC assumes that it can just call skb_condense() and then validly access the SACK table from skb->data and that it will be a flat buffer - but skb_condense() can silently fail to do anything under some circumstances. Note that whilst rxrpc_input_soft_acks() should be able to parse extended ACKs, the rest of AF_RXRPC doesn't currently support that. Further, there's then no need to call skb_condense() in rxrpc_input_ack(), so don't.

CVSS Metrics

  • v4.0•HIGH•Score: 8.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.46%• Percentile: 39%

Affected Systems

  • chainguard•linux-aws-6.12

    < 6.12.96-r0

  • chainguard•linux-aws-6.18

    < 6.18.38-r0

  • chainguard•linux-azure-6.12

    < 6.12.96-r0

  • chainguard•linux-azure-6.18

    < 6.18.38-r0

  • chainguard•linux-gcp-6.12

    < 6.12.96-r0

  • chainguard•linux-gcp-6.18

    < 6.18.38-r0

  • chainguard•linux-gcp-6.18-bootc-boot-installed

    < 6.18.38-r0

  • chainguard•linux-qemu-6.12

    < 6.12.96-r0

  • chainguard•linux-qemu-6.18

    < 6.18.38-r0

  • chainguard•linux-qemu-6.18-bootc-boot-installed

    < 6.18.38-r0

  • chainguard•linux-qemu-melange

    < 6.18.36-r0

  • chainguard•linux-vmware-6.12

    < 6.12.96-r0

  • chainguard•linux-vmware-6.18

    < 6.18.38-r0

  • debian•linux

    < 6.12.95-1 | < 7.0.13-1

  • ubuntu•linux

    < 6.8.0-137.137 | all | < 7.0.0-29.29

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    < 6.8.0-1062.65 | all | < 7.0.0-1010.10

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.14

    all

  • ubuntu•linux-aws-6.17

    all

  • ubuntu•linux-aws-6.2

    all

  • ubuntu•linux-aws-6.5

    all

  • ubuntu•linux-aws-6.8

    all | < 6.8.0-1062.65~22.04.2

  • ubuntu•linux-aws-7.0

    all | < 7.0.0-1010.10~24.04.1

  • ubuntu•linux-aws-fips

    < 6.8.0-1062.65+fips1

  • ubuntu•linux-azure

    all | < 6.8.0-1064.72 | all | < 7.0.0-1011.11

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.11

    all

  • ubuntu•linux-azure-6.14

    all

  • ubuntu•linux-azure-6.17

    all

  • ubuntu•linux-azure-6.2

    all

  • ubuntu•linux-azure-6.5

    all

  • ubuntu•linux-azure-6.8

    < 6.8.0-1064.72~22.04.1

  • ubuntu•linux-azure-7.0

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all | < 6.8.0-1063.70 | all | < 7.0.0-1010.10

  • ubuntu•linux-azure-fde-5.19

    all

  • ubuntu•linux-azure-fde-6.14

    all

  • ubuntu•linux-azure-fde-6.17

    all

  • ubuntu•linux-azure-fde-6.2

    all

  • ubuntu•linux-azure-fde-6.8

    < 6.8.0-1063.70~22.04.1

Showing first 50 affected entries in server-rendered view.

References (27)