A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the Linux kernel through 5.3.11 allows atta…

published 2019-11-18 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-8697

cvss: 4.7; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits: 0; none known

A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering alloc_page() failures, aka CID-b4b814fec1a5.

Patch / fix

distros 5 links 1

debian ubuntu red hat suse opensuse

linux Debian 14, Debian 13, Debian 12 5.4.6-1

debian advisories DEBIAN-CVE-2019-19058

linux Ubuntu 18.04 LTS 4.15.0-91.92
linux-aws Ubuntu 18.04 LTS 4.15.0-1063.67
linux-gcp Ubuntu 16.04 LTS 4.15.0-1058.62
linux-gcp Ubuntu 18.04 LTS 5.0.0-1033.34
linux-hwe Ubuntu 16.04 LTS 4.15.0-91.92~16.04.1
linux-hwe Ubuntu 18.04 LTS 5.3.0-42.34~18.04.1
linux-kvm Ubuntu 18.04 LTS 4.15.0-1056.57
linux-oem Ubuntu 18.04 LTS 4.15.0-1076.86

ubuntu advisories UBUNTU-CVE-2019-19058

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel RHEL 7 3.10.0-1160.el7
perf RHEL 7 3.10.0-1160.el7
bpftool RHEL 7 3.10.0-1160.el7
python-perf RHEL 7 3.10.0-1160.el7
kernel-kdump RHEL 7 3.10.0-1160.el7
kernel-tools RHEL 7 3.10.0-1160.el7
kernel-tools-libs RHEL 7 3.10.0-1160.el7
kernel-bootwrapper RHEL 7 3.10.0-1160.el7

red hat advisories RHSA-2020:4060 RHSA-2020:4062 RHSA-2020:1567 RHSA-2020:1769

kernel-rt Real Time Module 15 SP1 4.12.14-14.17.1
kernel-syms-rt Real Time Module 15 SP1 4.12.14-14.17.1
kernel-rt_debug Real Time Module 15 SP1 4.12.14-14.17.1
kernel-source-rt Real Time Module 15 SP1 4.12.14-14.17.1
kernel-rt SLE Real Time 12 SP4 4.12.14-8.12.1
kernel-syms-rt SLE Real Time 12 SP4 4.12.14-8.12.1
kernel-rt_debug SLE Real Time 12 SP4 4.12.14-8.12.1
kernel-source-rt SLE Real Time 12 SP4 4.12.14-8.12.1

suse advisories SUSE-SU-2020:0613-1 SUSE-SU-2020:0599-1 SUSE-SU-2020:0093-1 SUSE-SU-2019:3381-1 SUSE-SU-2019:3372-1 SUSE-SU-2019:3371-1

kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.36.1
kernel-obs-qa openSUSE Leap 15.1 4.12.14-lp151.28.36.1
kernel-source openSUSE Leap 15.1 4.12.14-lp151.28.36.1
kernel-default openSUSE Leap 15.1 4.12.14-lp151.28.36.1
kernel-vanilla openSUSE Leap 15.1 4.12.14-lp151.28.36.1
kernel-kvmsmall openSUSE Leap 15.1 4.12.14-lp151.28.36.1
kernel-obs-build openSUSE Leap 15.1 4.12.14-lp151.28.36.1

opensuse advisories openSUSE-SU-2019:2675-1

github.com/torvalds/linux@b4b814f commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-19058 updated 2026-11-06 cvss 4.7

kernel: A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c allows for a DoS

Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
affected: workaround, no fix planned “Out of support scope”
Red Hat Enterprise Linux 7 perf, kernel, kernel-alt, python-perf, kernel-kdump, kernel-tools, +3 more
affected: workaround, no fix available “Fix deferred”
Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
affected: workaround, no fix planned “Out of support scope”
Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-193.el8, kernel-debuginfo-common-aarch64 4.18.0-193.el8, kernel-debuginfo-common-ppc64le 4.18.0-193.el8 Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-193.el8, kernel 4.18.0-193.el8, bpftool 4.18.0-193.el8, kernel-core 4.18.0-193.el8, kernel-tools 4.18.0-193.el8, python3-perf 4.18.0-193.el8, +15 more
fixed: vendor fix RHSA-2020:1769
Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1160.el7, kernel 3.10.0-1160.el7, bpftool 3.10.0-1160.el7, python-perf 3.10.0-1160.el7, kernel-tools 3.10.0-1160.el7, kernel-tools-libs 3.10.0-1160.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-1160.el7, kernel 3.10.0-1160.el7, bpftool 3.10.0-1160.el7, python-perf 3.10.0-1160.el7, kernel-tools 3.10.0-1160.el7, kernel-tools-libs 3.10.0-1160.el7, +2 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.el7
fixed: vendor fix RHSA-2020:4060
Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1160.rt56.1131.el7, kernel-rt-trace 3.10.0-1160.rt56.1131.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.rt56.1131.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1160.rt56.1131.el7, kernel-rt-kvm 3.10.0-1160.rt56.1131.el7, kernel-rt-trace 3.10.0-1160.rt56.1131.el7, kernel-rt-debug-kvm 3.10.0-1160.rt56.1131.el7, kernel-rt-trace-kvm 3.10.0-1160.rt56.1131.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.rt56.1131.el7
fixed: vendor fix RHSA-2020:4062
Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-193.rt13.51.el8, kernel-rt-core 4.18.0-193.rt13.51.el8, kernel-rt-modules 4.18.0-193.rt13.51.el8, kernel-rt-debug-core 4.18.0-193.rt13.51.el8, kernel-rt-debug-modules 4.18.0-193.rt13.51.el8, kernel-rt-modules-extra 4.18.0-193.rt13.51.el8, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-193.rt13.51.el8, kernel-rt-kvm 4.18.0-193.rt13.51.el8, kernel-rt-core 4.18.0-193.rt13.51.el8, kernel-rt-modules 4.18.0-193.rt13.51.el8, kernel-rt-debug-kvm 4.18.0-193.rt13.51.el8, kernel-rt-debug-core 4.18.0-193.rt13.51.el8, +4 more
fixed: vendor fix RHSA-2020:1567
Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1160.el7, kernel 3.10.0-1160.el7, bpftool 3.10.0-1160.el7, python-perf 3.10.0-1160.el7, kernel-kdump 3.10.0-1160.el7, kernel-tools 3.10.0-1160.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1160.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1160.el7, kernel 3.10.0-1160.el7, bpftool 3.10.0-1160.el7, python-perf 3.10.0-1160.el7, kernel-tools 3.10.0-1160.el7, kernel-tools-libs 3.10.0-1160.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.el7
fixed: vendor fix RHSA-2020:4060

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	4.7	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	4.7	AV:L/AC:M/Au:N/C:N/I:N/A:C

Classification

Weakness

CWE-401 Missing Release of Memory after Effective Lifetime

Technology feeds

Linux kernel rss critical rss

References

github.com /torvalds/linux/commit/b4b814fec1a5a849383f7b3886b654a13abbda7d
patch, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/O3PSDE6PTOTVBK2YTKB2TFQP2SUBVSNF/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/PY7LJMSPAGRIKABJPDKQDTXYW3L5RX2T/
vendor-advisory
lists.opensuse.org /opensuse-security-announce/2019-12/msg00029.html
vendor-advisory, mailing-list, third-party-advisory
usn.ubuntu.com /4300-1/
vendor-advisory, third-party-advisory
usn.ubuntu.com /4301-1/
vendor-advisory, third-party-advisory
usn.ubuntu.com /4302-1/
vendor-advisory, third-party-advisory
security.netapp.com /advisory/ntap-20191205-0001/
third-party-advisory

Sources

CVE List CVE-2019-19058
NVD CVE-2019-19058

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary