Linux Distros Unpatched Vulnerability : CVE-2026-93599
| Reporter | Title | Published | Views | Family All 24 |
|---|---|---|---|---|
| CVE-2026-93599 | 18 Sep 202613:20 | – | cve | |
| CVE-2026-93599 rustls-webpki before 0.103.13 Panic via empty BIT STRING | 18 Sep 202613:20 | – | cvelist | |
| CVE-2026-93599 | 18 Sep 202613:20 | – | debiancve | |
| EUVD-2026-82894 | 18 Sep 202613:20 | – | euvd | |
| CVE-2026-93599 | 18 Sep 202614:19 | – | nvd | |
| DEBIAN-CVE-2026-93599 | 18 Sep 202614:19 | – | osv | |
| GHSA-82J2-J2CH-GFR8 rustls-webpki: Denial of service via panic on malformed CRL BIT STRING | 24 Apr 202616:20 | – | osv | |
| RUSTSEC-2026-0104 Reachable panic in certificate revocation list parsing | 22 Apr 202612:00 | – | osv | |
| UBUNTU-CVE-2026-93599 | 18 Sep 202614:19 | – | osv | |
| CVE-2026-93599: Integer Underflow (Wrap or Wraparound) | 18 Sep 202600:00 | – | rapid7 |
10
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
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if (description)
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patched.");
script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.
- rustls-webpki through 0.103.12 (and 0.104.0-alpha releases before 0.104.0-alpha.7) contains a reachable
panic in bit_string_flags() in src/der.rs. The input guard fails to reject a named-bit BIT STRING whose
content is exactly [0x00] (zero padding bits and no data bytes), so raw_bits.len() - 1 underflows on the
empty slice and the subsequent index operation panics (subtract-with-overflow in debug, index-out-of-
bounds in release). The condition is reachable through the public API
BorrowedCertRevocationList::from_der() when a CRL contains an issuingDistributionPoint extension with such
an onlySomeReasons value. Exploitation requires an application that explicitly opts in to CRL revocation
checking by passing RevocationOptions to verify_for_usage() and that parses CRL bytes obtained from a
source the attacker can influence; the default rustls configuration, which does not use RevocationOptions,
is unaffected. A crafted CRL causes a denial of service via the panic. Fixed in 0.103.13 and
0.104.0-alpha.7. (CVE-2026-93599)
Note that Nessus relies on the presence of the package as reported by the vendor.");
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{"reference": "mesa-libGL"},
{"reference": "mesa-libGL-devel"},
{"reference": "mesa-libGLU"},
{"reference": "mesa-libGLU-devel"},
{"reference": "mesa-libOSMesa"},
{"reference": "mesa-libOSMesa-devel"},
{"reference": "mesa-libgbm"},
{"reference": "mesa-libgbm-devel"},
{"reference": "mesa-libglapi"},
{"reference": "mesa-libxatracker"},
{"reference": "mesa-vulkan-drivers"},
{"reference": "python3-ldb"},
{"reference": "python3-samba"},
{"reference": "python3-samba-dc"},
{"reference": "python3-samba-test"},
{"reference": "rpm-ostree"},
{"reference": "rpm-ostree-libs"},
{"reference": "samba"},
{"reference": "samba-client"},
{"reference": "samba-client-libs"},
{"reference": "samba-common"},
{"reference": "samba-common-libs"},
{"reference": "samba-common-tools"},
{"reference": "samba-dc-libs"},
{"reference": "samba-dcerpc"},
{"reference": "samba-devel"},
{"reference": "samba-gpupdate"},
{"reference": "samba-krb5-printing"},
{"reference": "samba-ldb-ldap-modules"},
{"reference": "samba-libs"},
{"reference": "samba-pidl"},
{"reference": "samba-test"},
{"reference": "samba-test-libs"},
{"reference": "samba-tools"},
{"reference": "samba-usershares"},
{"reference": "samba-vfs-iouring"},
{"reference": "samba-winbind"},
{"reference": "samba-winbind-clients"},
{"reference": "samba-winbind-krb5-locator"},
{"reference": "samba-winbind-modules"},
{"reference": "samba-winexe"},
{"reference": "sequoia-sq"},
{"reference": "thunderbird"},
{"reference": "trustee-guest-components"},
{"reference": "trustee-kbs"},
{"reference": "virt-firmware-rs"}
]
}
]
},
"CentOS Linux-7": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "7",
"pkgs": [
{"reference": "firefox"}
]
}
]
},
"Red Hat Enterprise Linux-7": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "7",
"pkgs": [
{"reference": "firefox"}
]
}
]
},
"CentOS Linux-8": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "8",
"pkgs": [
{"reference": "thunderbird"}
]
}
]
},
"Red Hat Enterprise Linux-8": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "8",
"pkgs": [
{"reference": "thunderbird"}
]
}
]
},
"Red Hat Enterprise Linux-9": {
"package_manager": "rpm-list",
"constraints": [
{
"release": "9",
"pkgs": [
{"reference": "afterburn"},
{"reference": "afterburn-dracut"},
{"reference": "clevis-pin-trustee"},
{"reference": "coreos-installer"},
{"reference": "coreos-installer-bootinfra"},
{"reference": "coreos-installer-dracut"},
{"reference": "ctdb"},
{"reference": "firefox"},
{"reference": "firefox-x11"},
{"reference": "glx-utils"},
{"reference": "goose"},
{"reference": "ldb-tools"},
{"reference": "libldb"},
{"reference": "libldb-devel"},
{"reference": "libnetapi"},
{"reference": "libnetapi-devel"},
{"reference": "libsmbclient"},
{"reference": "libsmbclient-devel"},
{"reference": "libwbclient"},
{"reference": "libwbclient-devel"},
{"reference": "mesa-demos"},
{"reference": "mesa-dri-drivers"},
{"reference": "mesa-filesystem"},
{"reference": "mesa-libEGL"},
{"reference": "mesa-libEGL-devel"},
{"reference": "mesa-libGL"},
{"reference": "mesa-libGL-devel"},
{"reference": "mesa-libGLU"},
{"reference": "mesa-libGLU-devel"},
{"reference": "mesa-libOSMesa"},
{"reference": "mesa-libOSMesa-devel"},
{"reference": "mesa-libgbm"},
{"reference": "mesa-libgbm-devel"},
{"reference": "mesa-libglapi"},
{"reference": "mesa-libxatracker"},
{"reference": "mesa-vulkan-drivers"},
{"reference": "python3-ldb"},
{"reference": "python3-samba"},
{"reference": "python3-samba-dc"},
{"reference": "python3-samba-devel"},
{"reference": "python3-samba-test"},
{"reference": "rpm-ostree"},
{"reference": "rpm-ostree-devel"},
{"reference": "rpm-ostree-libs"},
{"reference": "rust-sequoia-sq"},
{"reference": "samba"},
{"reference": "samba-client"},
{"reference": "samba-client-libs"},
{"reference": "samba-common"},
{"reference": "samba-common-libs"},
{"reference": "samba-common-tools"},
{"reference": "samba-dc-libs"},
{"reference": "samba-dcerpc"},
{"reference": "samba-devel"},
{"reference": "samba-gpupdate"},
{"reference": "samba-krb5-printing"},
{"reference": "samba-ldb-ldap-modules"},
{"reference": "samba-libs"},
{"reference": "samba-pidl"},
{"reference": "samba-test"},
{"reference": "samba-test-libs"},
{"reference": "samba-tools"},
{"reference": "samba-usershares"},
{"reference": "samba-vfs-iouring"},
{"reference": "samba-winbind"},
{"reference": "samba-winbind-clients"},
{"reference": "samba-winbind-krb5-locator"},
{"reference": "samba-winbind-modules"},
{"reference": "samba-winexe"},
{"reference": "thunderbird"},
{"reference": "trustee-guest-components"}
]
}
]
}
};
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 third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
var third_party_vendors = distro_constraints_values['third_party'];
if (!empty_or_null(third_party_vendors)) {
var vendor;
foreach vendor (third_party_vendors) {
if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
}
}
}
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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23 Sep 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.5
CVSS 48.7
EPSS0.00346
SSVC