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Linux Distros Unpatched Vulnerability : CVE-2026-45959

🗓️ 28 May 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 5 Views

Linux kernel crypto ccp bug causes crash due to incorrect kfree cleanup of a local pointer; no patch.

Related
Refs
Code
ReporterTitlePublishedViews
Family
CNNVD
Linux kernel 安全漏洞
27 May 202600:00
cnnvd
CVE
CVE-2026-45959
27 May 202612:18
cve
Cvelist
CVE-2026-45959 crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree
27 May 202612:18
cvelist
Debian CVE
CVE-2026-45959
27 May 202612:18
debiancve
EUVD
EUVD-2026-32243
27 May 202615:33
euvd
NVD
CVE-2026-45959
27 May 202614:17
nvd
OSV
BELL-CVE-2026-45959 CVE-2026-45959 does not affect BellSoft software
28 May 202606:10
osv
OSV
DEBIAN-CVE-2026-45959
27 May 202614:17
osv
OSV
UBUNTU-CVE-2026-45959
27 May 202614:17
osv
Positive Technologies
PT-2026-43826
27 May 202600:00
ptsecurity
Rows per page
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

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"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix a crash due to
    incorrect cleanup usage of kfree Annotating a local pointer variable, which will be assigned with the
    kmalloc-family functions, with the `__cleanup(kfree)` attribute will make the address of the local
    variable, rather than the address returned by kmalloc, passed to kfree directly and lead to a crash due to
    invalid deallocation of stack address. According to other places in the repo, the correct usage should be
    `__free(kfree)`. The code coincidentally compiled because the parameter type `void *` of kfree is
    compatible with the desired type `struct { ... } **`. (CVE-2026-45959)

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          {"reference": "kernel-rt-debug-devel"},
          {"reference": "kernel-rt-debug-devel-matched"},
          {"reference": "kernel-rt-debug-kvm"},
          {"reference": "kernel-rt-debug-modules"},
          {"reference": "kernel-rt-debug-modules-core"},
          {"reference": "kernel-rt-debug-modules-extra"},
          {"reference": "kernel-rt-debug-modules-internal"},
          {"reference": "kernel-rt-debug-modules-partner"},
          {"reference": "kernel-rt-devel"},
          {"reference": "kernel-rt-devel-matched"},
          {"reference": "kernel-rt-kvm"},
          {"reference": "kernel-rt-modules"},
          {"reference": "kernel-rt-modules-core"},
          {"reference": "kernel-rt-modules-extra"},
          {"reference": "kernel-rt-modules-internal"},
          {"reference": "kernel-rt-modules-partner"},
          {"reference": "kernel-rt-selftests-internal"},
          {"reference": "kernel-selftests-internal"},
          {"reference": "kernel-tools"},
          {"reference": "kernel-tools-libs"},
          {"reference": "kernel-tools-libs-devel"},
          {"reference": "kernel-uki-virt"},
          {"reference": "kernel-uki-virt-addons"},
          {"reference": "kernel-zfcpdump"},
          {"reference": "kernel-zfcpdump-core"},
          {"reference": "kernel-zfcpdump-devel"},
          {"reference": "kernel-zfcpdump-devel-matched"},
          {"reference": "kernel-zfcpdump-modules"},
          {"reference": "kernel-zfcpdump-modules-core"},
          {"reference": "kernel-zfcpdump-modules-extra"},
          {"reference": "kernel-zfcpdump-modules-internal"},
          {"reference": "kernel-zfcpdump-modules-partner"},
          {"reference": "libperf"},
          {"reference": "libperf-devel"},
          {"reference": "perf"},
          {"reference": "python3-perf"},
          {"reference": "rtla"},
          {"reference": "rv"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}

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02 Jun 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.8
EPSS0.00013
5