7.8

CVE-2026-53233: linux Double Free

CVSS: 7.8v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-53233DEBIAN-CVE-2026-53233CGA-8q58-cm9v-hpmv
Published 25-06-2026Last modified 25-06-2026
Open JSON

Vulnerability summary

CVE-2026-53233 is a high (CVSS 7.8) Double Free vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.13%
0%100%
Low · -0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 66 · Related 66
MGASA-2026-0312OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23221-1SUSE-SU-2026:23231-1

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.

Description

In the Linux kernel, the following vulnerability has been resolved: netdev: fix double-free in netdev_nl_bind_rx_doit() Sashiko flags that genlmsg_reply() always consumes the skb. The error path calls nlmsg_free(rsp) so we can't jump directly to it. Let's not unbind, just propagate the error to the user. This is the typical way of handling genlmsg_reply() failures. They shouldn't happen unless user does something silly like calling the kernel with an already-full rcvbuf.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

-0.05 pp

From 0.18% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.13%

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

Affected systems

Ubuntu119 products
  • linuxAll versions (No fix recorded) | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard7 products
  • linux-azure-6.18< 6.18.38-r0
  • linux-gcp-6.18< 6.18.38-r0
  • linux-gcp-6.18-bootc-boot-installed< 6.18.38-r0
  • linux-qemu-6.18< 6.18.38-r0
  • linux-qemu-6.18-bootc-boot-installed< 6.18.38-r0
Linux2 products
  • linux≥ 170aafe35cb98e0f3fbacb446ea86389fbce22ea, < e055ca9205d3eb6aec3e5fe4ecc18abbbf18c599 | ≥ 170aafe35cb98e0f3fbacb446ea86389fbce22ea, < c299321bc6232770ce378d6fa6bc46004d2d7fdb | ≥ 170aafe35cb98e0f3fbacb446ea86389fbce22ea, < 9b019376cbee10c4f9184d1745fa37d156e36f30 | ≥ 170aafe35cb98e0f3fbacb446ea86389fbce22ea, < c849de7d8757a7af801fc4a4058f71d481d367f2 | 6.12
  • linux_kernel≥ 6.12, < 6.12.94 | ≥ 6.13, < 6.18.36 | ≥ 6.19, < 7.0.13 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6 | 7.1:rc7
Debian1 product
  • linux< 6.12.94-1 | < 7.0.13-1

4 vendors · 129 products

References

19 links
Show all 19 references