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Fencer Vulns
medium 5.5

CVE-2024-50110 json

xfrm: fix one more kernel-infoleak in algo dumping

published 2024-11-05 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-44600

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

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.

Patch / fix

  • Linux Linux 5.15.170, 6.1.115, 6.6.59, 6.11.6, 6.12
  • linux Debian 12 6.1.115-1
  • linux Debian 14, Debian 13 6.11.6-1

debian advisories DEBIAN-CVE-2024-50110

  • linux Ubuntu 22.04 LTS 5.15.0-133.144
  • linux Ubuntu 24.04 LTS 6.8.0-58.60
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1078.85
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1027.29
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1077.86
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1028.30
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1075.81
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1023.27

ubuntu advisories UBUNTU-CVE-2024-50110

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 9 5.14.0-503.19.1.el9_5
  • rv RHEL 9 5.14.0-503.19.1.el9_5
  • perf RHEL 9 5.14.0-503.19.1.el9_5
  • rtla RHEL 9 5.14.0-503.19.1.el9_5
  • bpftool RHEL 9 7.4.0-503.19.1.el9_5
  • libperf RHEL 9 5.14.0-503.19.1.el9_5
  • kernel-rt RHEL 9 5.14.0-503.19.1.el9_5
  • kernel-64k RHEL 9 5.14.0-503.19.1.el9_5

red hat advisories RHSA-2025:1658RHSA-2024:11486RHSA-2024:10943RHSA-2024:10944

  • kernel-source Linux Micro 6.1, Linux Micro 6.0 6.4.0-24.1
  • kernel-default Linux Micro 6.1, Linux Micro 6.0 6.4.0-24.1
  • kernel-kvmsmall Linux Micro 6.1, Linux Micro 6.0 6.4.0-24.1
  • kernel-default-base Linux Micro 6.1, Linux Micro 6.0 6.4.0-24.1.21.4
  • kernel-livepatch-MICRO-6-0_Update_4 Linux Micro 6.1, Linux Micro 6.0 1-1.2
  • kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-22.1
  • kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-22.1
  • kernel-livepatch-MICRO-6-0-RT_Update_4 Linux Micro 6.1, Linux Micro 6.0 1-1.1

suse advisories SUSE-SU-2025:20164-1SUSE-SU-2025:20247-1SUSE-SU-2025:20163-1SUSE-SU-2025:20246-1SUSE-SU-2024:4387-1SUSE-SU-2024:4376-1

  • kernel-source-longterm openSUSE Tumbleweed 6.12.11-1.1
  • kernel-source openSUSE Tumbleweed 6.11.8-1.1

opensuse advisories openSUSE-SU-2025:14705-1openSUSE-SU-2024:14500-1

  • kernel AlmaLinux 9 5.14.0-503.19.1.el9_5
  • rv AlmaLinux 9 5.14.0-503.19.1.el9_5
  • perf AlmaLinux 9 5.14.0-503.19.1.el9_5
  • rtla AlmaLinux 9 5.14.0-503.19.1.el9_5
  • bpftool AlmaLinux 9 7.4.0-503.19.1.el9_5
  • libperf AlmaLinux 9 5.14.0-503.19.1.el9_5
  • kernel-rt AlmaLinux 9 5.14.0-503.19.1.el9_5
  • kernel-64k AlmaLinux 9 5.14.0-503.19.1.el9_5

almalinux advisories ALSA-2024:11486ALSA-2024:10943ALSA-2024:10944

  • kernel-rt Rocky Linux 8 4.18.0-553.32.1.rt7.373.el8_10
  • kernel Rocky Linux 8 4.18.0-553.32.1.el8_10

rocky linux advisories RLSA-2024:10944RLSA-2024:10943

  • kernel CBL-Mariner 2.0 5.15.173.1-1
  • kernel Azure Linux 3.0 6.6.64.2-1

azure linux advisories AZL-52479AZL-52526

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2024-50110 updated cvss 5.5

kernel: xfrm: fix one more kernel-infoleak in algo dumping

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 9) libperf 5.14.0-503.19.1.el9_5, kernel-debuginfo-common-s390x 5.14.0-503.19.1.el9_5, kernel-debuginfo-common-x86_64 5.14.0-503.19.1.el9_5, kernel-debuginfo-common-aarch64 5.14.0-503.19.1.el9_5, kernel-debuginfo-common-ppc64le 5.14.0-503.19.1.el9_5
    fixed: vendor fix RHSA-2024:11486
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.55.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.55.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.55.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.55.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.55.1.el9_4
    fixed: vendor fix RHSA-2025:1658
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-503.19.1.el9_5, perf 5.14.0-503.19.1.el9_5, rtla 5.14.0-503.19.1.el9_5, kernel-devel-matched 5.14.0-503.19.1.el9_5, kernel-64k-devel-matched 5.14.0-503.19.1.el9_5, kernel-debug-devel-matched 5.14.0-503.19.1.el9_5, +6 more
    fixed: vendor fix RHSA-2024:11486
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.55.1.el9_4, perf 5.14.0-427.55.1.el9_4, rtla 5.14.0-427.55.1.el9_4, kernel-devel-matched 5.14.0-427.55.1.el9_4, kernel-64k-devel-matched 5.14.0-427.55.1.el9_4, kernel-debug-devel-matched 5.14.0-427.55.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:1658
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.32.1.el8_10, kernel 4.18.0-553.32.1.el8_10, bpftool 4.18.0-553.32.1.el8_10, kernel-core 4.18.0-553.32.1.el8_10, kernel-tools 4.18.0-553.32.1.el8_10, python3-perf 4.18.0-553.32.1.el8_10, +15 more
    fixed: vendor fix RHSA-2024:10943
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.4.0-503.19.1.el9_5, kernel 5.14.0-503.19.1.el9_5, kernel-64k 5.14.0-503.19.1.el9_5, kernel-core 5.14.0-503.19.1.el9_5, kernel-tools 5.14.0-503.19.1.el9_5, python3-perf 5.14.0-503.19.1.el9_5, +29 more
    fixed: vendor fix RHSA-2024:11486
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.55.1.el9_4, kernel 5.14.0-427.55.1.el9_4, kernel-64k 5.14.0-427.55.1.el9_4, kernel-core 5.14.0-427.55.1.el9_4, kernel-tools 5.14.0-427.55.1.el9_4, python3-perf 5.14.0-427.55.1.el9_4, +28 more
    fixed: vendor fix RHSA-2025:1658
show 7 more
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.32.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.32.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.32.1.el8_10
    fixed: vendor fix RHSA-2024:10943
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-kvm 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-core 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-modules 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-kvm 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-core 4.18.0-553.32.1.rt7.373.el8_10, +4 more
    fixed: vendor fix RHSA-2024:10944
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-503.19.1.el9_5, kernel-rt-core 5.14.0-503.19.1.el9_5, kernel-rt-modules 5.14.0-503.19.1.el9_5, kernel-rt-debug-core 5.14.0-503.19.1.el9_5, kernel-rt-modules-core 5.14.0-503.19.1.el9_5, kernel-rt-debug-modules 5.14.0-503.19.1.el9_5, +4 more
    fixed: vendor fix RHSA-2024:11486
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.55.1.el9_4, kernel-rt-core 5.14.0-427.55.1.el9_4, kernel-rt-modules 5.14.0-427.55.1.el9_4, kernel-rt-debug-core 5.14.0-427.55.1.el9_4, kernel-rt-modules-core 5.14.0-427.55.1.el9_4, kernel-rt-debug-modules 5.14.0-427.55.1.el9_4, +4 more
    fixed: vendor fix RHSA-2025:1658
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-503.19.1.el9_5, kernel-rt-kvm 5.14.0-503.19.1.el9_5, kernel-rt-core 5.14.0-503.19.1.el9_5, kernel-rt-modules 5.14.0-503.19.1.el9_5, kernel-rt-debug-kvm 5.14.0-503.19.1.el9_5, kernel-rt-debug-core 5.14.0-503.19.1.el9_5, +6 more
    fixed: vendor fix RHSA-2024:11486
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.55.1.el9_4, kernel-rt-kvm 5.14.0-427.55.1.el9_4, kernel-rt-core 5.14.0-427.55.1.el9_4, kernel-rt-modules 5.14.0-427.55.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.55.1.el9_4, kernel-rt-debug-core 5.14.0-427.55.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:1658
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-core 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-modules 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-core 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-modules 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-modules-extra 4.18.0-553.32.1.rt7.373.el8_10, +2 more
    fixed: vendor fix RHSA-2024:10944

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
13 mo ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Linux Linux

Classification

Weakness
  • CWE-908 Use of Uninitialized Resource
Technology feeds

References

Sources

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.