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Medium · 5.5 CVE-2024-50110 EUVD-2024-44600GHSA-xfw2-qh29-p3mm

xfrm: fix one more kernel-infoleak in algo dumping

Published Nov 5, 2024 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: kernel Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

xfrm: fix one more kernel-infoleak in algo dumping

During fuzz testing, the following issue was discovered:

BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x598/0x2a30
_copy_to_iter+0x598/0x2a30
__skb_datagram_iter+0x168/0x1060
skb_copy_datagram_iter+0x5b/0x220
netlink_recvmsg+0x362/0x1700
sock_recvmsg+0x2dc/0x390
__sys_recvfrom+0x381/0x6d0
__x64_sys_recvfrom+0x130/0x200
x64_sys_call+0x32c8/0x3cc0
do_syscall_64+0xd8/0x1c0
entry_SYSCALL_64_after_hwframe+0x79/0x81

Uninit was stored to memory at:
copy_to_user_state_extra+0xcc1/0x1e00
dump_one_state+0x28c/0x5f0
xfrm_state_walk+0x548/0x11e0
xfrm_dump_sa+0x1e0/0x840
netlink_dump+0x943/0x1c40
__netlink_dump_start+0x746/0xdb0
xfrm_user_rcv_msg+0x429/0xc00
netlink_rcv_skb+0x613/0x780
xfrm_netlink_rcv+0x77/0xc0
netlink_unicast+0xe90/0x1280
netlink_sendmsg+0x126d/0x1490
__sock_sendmsg+0x332/0x3d0
____sys_sendmsg+0x863/0xc30
___sys_sendmsg+0x285/0x3e0
__x64_sys_sendmsg+0x2d6/0x560
x64_sys_call+0x1316/0x3cc0
do_syscall_64+0xd8/0x1c0
entry_SYSCALL_64_after_hwframe+0x79/0x81

Uninit was created at:
__kmalloc+0x571/0xd30
attach_auth+0x106/0x3e0
xfrm_add_sa+0x2aa0/0x4230
xfrm_user_rcv_msg+0x832/0xc00
netlink_rcv_skb+0x613/0x780
xfrm_netlink_rcv+0x77/0xc0
netlink_unicast+0xe90/0x1280
netlink_sendmsg+0x126d/0x1490
__sock_sendmsg+0x332/0x3d0
____sys_sendmsg+0x863/0xc30
___sys_sendmsg+0x285/0x3e0
__x64_sys_sendmsg+0x2d6/0x560
x64_sys_call+0x1316/0x3cc0
do_syscall_64+0xd8/0x1c0
entry_SYSCALL_64_after_hwframe+0x79/0x81

Bytes 328-379 of 732 are uninitialized
Memory access of size 732 starts at ffff88800e18e000
Data copied to user address 00007ff30f48aff0

CPU: 2 PID: 18167 Comm: syz-executor.0 Not tainted 6.8.11 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014

Fixes copying of xfrm algorithms where some random
data of the structure fields can end up in userspace.
Padding in structures may be filled with random (possibly sensitve)
data and should never be given directly to user-space.

A similar issue was resolved in the commit
8222d5910dae ("xfrm: Zero padding when dumping algos and encap")

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Affected products

VendorProductAffectedFixed
Linux Linux 5.11 5.15.170

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.11.6-1 —
Debian 13 linux 6.11.6-1 —
Debian 12 linux 6.1.115-1 —
Debian 11 linux-6.1 6.1.119-1~deb11u1 DLA-4008-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1060.62 —
Ubuntu 24.04 LTS linux 6.8.0-58.60 USN-7449-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1027.29 USN-7449-1
Ubuntu 24.04 LTS linux-azure 6.8.0-1027.32 USN-7449-1
Ubuntu 24.04 LTS linux-azure-6.11 6.11.0-1012.12~24.04.1 —
Ubuntu 24.04 LTS linux-azure-nvidia 6.8.0-1014.15 USN-7468-1
Ubuntu 24.04 LTS linux-gcp 6.8.0-1028.30 USN-7450-1
Ubuntu 24.04 LTS linux-gcp-6.11 6.11.0-1011.11~24.04.1 —
Ubuntu 24.04 LTS linux-gke 6.8.0-1023.27 USN-7450-1
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1010.12 USN-7450-1
Ubuntu 24.04 LTS linux-ibm 6.8.0-1024.24 USN-7449-1
Ubuntu 24.04 LTS linux-nvidia 6.8.0-1026.29 USN-7449-1
Ubuntu 24.04 LTS linux-nvidia-6.11 6.11.0-1007.7 —
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1026.29.1 USN-7449-1
Ubuntu 24.04 LTS linux-nvidia-tegra 6.8.0-1008.8 —
Ubuntu 24.04 LTS linux-oem-6.11 6.11.0-1015.15 USN-7310-1
Ubuntu 24.04 LTS linux-oem-6.8 6.8.0-1026.26 USN-7449-1
Ubuntu 24.04 LTS linux-oracle 6.8.0-1024.25 USN-7449-1
Ubuntu 24.04 LTS linux-raspi 6.8.0-1028.32 USN-7524-1
Ubuntu 24.04 LTS linux-realtime +1 No fix yet —
Ubuntu 24.04 LTS linux-riscv +1 6.8.0-58.60.1 USN-7449-1
Ubuntu 24.04 LTS linux-xilinx 6.8.0-1017.18 —
Ubuntu 22.04 LTS linux 5.15.0-133.144 USN-7288-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1078.85 USN-7308-1
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1027.29~22.04.1 USN-7451-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1081.90 USN-7289-1
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1027.32~22.04.1 USN-7449-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1081.90.1 USN-7289-1
Ubuntu 22.04 LTS linux-gcp 5.15.0-1077.86 USN-7291-1
Ubuntu 22.04 LTS linux-gcp-6.8 6.8.0-1028.30~22.04.1 USN-7452-1
Ubuntu 22.04 LTS linux-gke +1 5.15.0-1075.81 USN-7291-1, USN-7289-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1060.68 USN-7289-1
Ubuntu 22.04 LTS linux-hwe-6.8 6.8.0-58.60~22.04.1 USN-7449-2
Ubuntu 22.04 LTS linux-ibm 5.15.0-1070.73 USN-7289-3
Ubuntu 22.04 LTS linux-ibm-6.8 6.8.0-1024.24~22.04.1 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1073.79 USN-7289-4
Ubuntu 22.04 LTS linux-kvm 5.15.0-1076.81 USN-7388-1
Ubuntu 22.04 LTS linux-lowlatency 5.15.0-133.143 USN-7288-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1072.73 USN-7289-1
Ubuntu 22.04 LTS linux-nvidia-6.8 6.8.0-1026.29~22.04.1 USN-7449-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1033.33 USN-7389-1
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1021.21 USN-7389-1
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1024.25~22.04.1 USN-7449-1
Ubuntu 22.04 LTS linux-raspi 5.15.0-1072.75 USN-7305-1
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 22.04 LTS linux-riscv-6.8 +1 6.8.0-58.60.1~22.04.1 USN-7449-1
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1044.48 USN-7390-1
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1080.87~20.04.1 USN-7388-1
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1081.90~20.04.1 USN-7289-2
Ubuntu 20.04 LTS linux-azure-fde-5.15 5.15.0-1081.90~20.04.1.1 USN-7289-2
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1077.86~20.04.1 USN-7291-1
Ubuntu 20.04 LTS linux-gke +27 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 5.15.0-134.145~20.04.1 USN-7331-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1074.77~20.04.1 USN-7458-1
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1073.79~20.04.2 USN-7289-4
Ubuntu 20.04 LTS linux-lowlatency-hwe-5.15 5.15.0-133.143~20.04.1 USN-7288-2
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1075.81~20.04.1 USN-7289-2
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1073.77~20.04.1 —
Ubuntu 18.04 LTS linux-gcp +13 No fix yet —
Show 7 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2023.24 USN-7523-1
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1020.21 USN-7453-1
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1071.73 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1078.86 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1020.21~22.04.1 —
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-78.78+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1078.85+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1080.89+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-133.144+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1077.86+fips1 —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1039.39~20.04.1 —
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.4.0-503.19.1.el9_5 RHSA-2024:11486
RHEL 9 rv +65 5.14.0-503.19.1.el9_5 RHSA-2024:11486
RHEL 8 kernel-rt +12 4.18.0-553.32.1.rt7.373.el8_10 RHSA-2024:10944
RHEL 8 perf +26 4.18.0-553.32.1.el8_10 RHSA-2024:10943
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 9.4 EUS bpftool 7.3.0-427.55.1.el9_4 RHSA-2025:1658
RHEL 9.4 EUS rv +64 5.14.0-427.55.1.el9_4 RHSA-2025:1658

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 9 bpftool 7.4.0-503.19.1.el9_5 ALSA-2024:11486
AlmaLinux 9 rv +61 5.14.0-503.19.1.el9_5 ALSA-2024:11486
AlmaLinux 8 kernel-rt +9 4.18.0-553.32.1.rt7.373.el8_10 ALSA-2024:10944
AlmaLinux 8 perf +24 4.18.0-553.32.1.el8_10 ALSA-2024:10943

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 8 kernel 4.18.0-553.32.1.el8_10 RLSA-2024:10943
Rocky Linux 8 kernel-rt 4.18.0-553.32.1.rt7.373.el8_10 RLSA-2024:10944
ReleasePackageFixed inAdvisory
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.30.1 SUSE-SU-2024:4318-1
SLES 15 SP6 kernel-azure +2 6.4.0-150600.8.20.1 SUSE-SU-2024:4316-1
SLES 15 SP6 kernel-coco +3 6.4.0-15061.9.coco15sp6.1 SUSE-SU-2024:4387-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.30.1.150600.12.12.6 SUSE-SU-2024:4318-1
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.88.1 SUSE-SU-2024:4364-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.75.1 SUSE-SU-2024:4376-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.88.1.150500.6.39.4 SUSE-SU-2024:4364-1
Show 7 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLE Micro 6.1 kernel-default-base 6.4.0-24.1.21.4 SUSE-SU-2025:20247-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_4 1-1.1 SUSE-SU-2025:20246-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_4 1-1.2 SUSE-SU-2025:20247-1
SLE Micro 6.1 kernel-rt +1 6.4.0-22.1 SUSE-SU-2025:20246-1
SLE Micro 6.1 kernel-source +2 6.4.0-24.1 SUSE-SU-2025:20247-1
SLE Micro 6.0 kernel-default-base 6.4.0-24.1.21.4 SUSE-SU-2025:20164-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_4 1-1.1 SUSE-SU-2025:20163-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_4 1-1.2 SUSE-SU-2025:20164-1
SLE Micro 6.0 kernel-rt +1 6.4.0-22.1 SUSE-SU-2025:20163-1
SLE Micro 6.0 kernel-source +2 6.4.0-24.1 SUSE-SU-2025:20164-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.88.1 SUSE-SU-2024:4364-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.88.1.150500.6.39.4 SUSE-SU-2024:4364-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.79.1 SUSE-SU-2024:4315-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.30.1 SUSE-SU-2024:4318-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_6 1-150600.1.3.1 SUSE-SU-2024:4314-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_6 1-150600.13.3.5 SUSE-SU-2024:4318-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.88.1 SUSE-SU-2024:4364-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5-RT_Update_23 1-150500.11.3.1 SUSE-SU-2024:4315-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_21 1-150500.11.5.1 SUSE-SU-2024:4364-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.20.1 SUSE-SU-2024:4314-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.79.1 SUSE-SU-2024:4315-1
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed kernel-source 6.11.8-1.1 openSUSE-SU-2024:14500-1
openSUSE Tumbleweed kernel-source-longterm 6.12.11-1.1 openSUSE-SU-2025:14705-1
openSUSE Leap 15.6 dtb-aarch64 +10 6.4.0-150600.23.30.1 SUSE-SU-2024:4318-1
openSUSE Leap 15.6 kernel-azure +2 6.4.0-150600.8.20.1 SUSE-SU-2024:4316-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.30.1.150600.12.12.6 SUSE-SU-2024:4318-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.20.1 SUSE-SU-2024:4314-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.75.1 SUSE-SU-2024:4376-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.79.1 SUSE-SU-2024:4315-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.5 kernel-rt 5.14.21-150500.13.79.1 SUSE-SU-2024:4315-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.1.115-126.197 1.0-0.amzn2023 ALAS2023-2025-794
Amazon Linux 2023 perf +14 6.1.115-126.197.amzn2023 ALAS2023-2025-794

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 kernel 6.6.64.2-1 —
Azure Linux 2 (CBL-Mariner) kernel 5.15.173.1-1 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 bpftool 7.4.0-503.19.1.el9_5 ELSA-2024-11486
Oracle Linux 9 rv +28 5.14.0-503.19.1.el9_5 ELSA-2024-11486
Oracle Linux 8 kernel-uek +12 5.15.0-303.171.5.2.el9uek ELSA-2024-12887
Oracle Linux 8 perf +19 4.18.0-553.32.1.el8_10 ELSA-2024-12887, ELSA-2024-10943

Advisories 50

References