7.8

CVE-2026-46129: linux Double Free

CVSS: 7.8v3.1HighUndergoing analysis
AliasesUBUNTU-CVE-2026-46129DEBIAN-CVE-2026-46129
Published 28-05-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-46129 is a high (CVSS 7.8) Double Free vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.6% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.18%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 26 · Related 26
OPENSUSE-SU-2026:10954-1USN-8566-1USN-8567-1USN-8568-1USN-8569-1USN-8574-1

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free in create_space_info() error path When kobject_init_and_add() fails, the call chain is: create_space_info() -> btrfs_sysfs_add_space_info_type() -> kobject_init_and_add() -> failure -> kobject_put(&space_info->kobj) -> space_info_release() -> kfree(space_info) Then control returns to create_space_info(): btrfs_sysfs_add_space_info_type() returns error -> goto out_free -> kfree(space_info) This causes a double free. Keep the direct kfree(space_info) for the earlier failure path, but after btrfs_sysfs_add_space_info_type() has called kobject_put(), let the kobject release callback handle the cleanup.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

+0.04 pp

From 0.14% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.18%

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

Ubuntu129 products
  • linux< 6.8.0-136.136 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1061.64 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 20e8f2de3688082eeafeb93c8900485b7542457e, < ae6d6e31ceb72b7697c28a528e4923c08e3c2ef5 | ≥ 58208907c4044a764dbd8896026283905da6d9be, < c2670ec4aa49ca226bce9776601e0da37502be07 | ≥ bb4fa4c0b54aae25e55faeda7f78d0c11b8cd618, < f414b3abbba59ef379a2b3c31f2bdd9358ed5e53 | ≥ 6cb008f1bb23e023dfe615cca5df14570dfc8da5, < 9a060970fd7b5e1c561e4ce73cb9949e4269a738 | ≥ a11224a016d6d1d46a4d9b6573244448a80d4d7f, < dd6ade0fdd59218d71a981ae7c937a304e49209c | ≥ a11224a016d6d1d46a4d9b6573244448a80d4d7f, < 3f487be81292702a59ea9dbc4088b3360a50e837 | ≥ 6.1.162, < 6.1.175 | ≥ 6.6.122, < 6.6.140 | ≥ 6.12.67, < 6.12.88 | ≥ 6.18.7, < 6.18.30 | 6.19
  • linux_kernelEOL≥ 6.1.162, < 6.1.175 | ≥ 6.6.122, < 6.6.140 | ≥ 6.12.67, < 6.12.88 | ≥ 6.18.7, < 6.18.30 | ≥ 6.19.1, < 7.0.7 | 6.19 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
  • linux< 6.1.176-1 | < 6.12.88-1 | < 7.0.7-1

3 vendors · 132 products

References

36 links
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