Input validation error in Linux kernel - CVE-2022-49325

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Main Vulnerability Database Vulnerabilities #VU104926

Input validation error in Linux kernel - CVE-2022-49325

Published: February 27, 2025 / Updated: May 11, 2025


Vulnerability identifier: #VU104926
CSH Severity: Low
CVSS v4 BT: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2022-49325
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the get_tcp6_sock() function in net/ipv6/tcp_ipv6.c, within the tcp_yeah_cong_avoid(), tcp_snd_cwnd() and tcp_yeah_ssthresh() functions in net/ipv4/tcp_yeah.c, within the tcp_westwood_event() function in net/ipv4/tcp_westwood.c, within the tcp_veno_cong_avoid() and tcp_veno_ssthresh() functions in net/ipv4/tcp_veno.c, within the EXPORT_SYMBOL_GPL() and tcp_vegas_cong_avoid() functions in net/ipv4/tcp_vegas.c, within the tcp_scalable_cong_avoid() and tcp_scalable_ssthresh() functions in net/ipv4/tcp_scalable.c, within the tcp_rate_check_app_limited() function in net/ipv4/tcp_rate.c, within the tcp_cwnd_restart(), tcp_tsq_write(), tcp_cwnd_application_limited(), tcp_cwnd_test(), tcp_tso_should_defer(), tcp_mtu_probe(), tcp_chrono_stop(), tcp_send_loss_probe() and tcp_xmit_retransmit_queue() functions in net/ipv4/tcp_output.c, within the tcpnv_cong_avoid(), tcpnv_recalc_ssthresh() and tcpnv_acked() functions in net/ipv4/tcp_nv.c, within the tcp_update_metrics() function in net/ipv4/tcp_metrics.c, within the tcp_lp_pkts_acked() function in net/ipv4/tcp_lp.c, within the get_tcp4_sock() function in net/ipv4/tcp_ipv4.c, within the tcp_sndbuf_expand(), tcp_update_pacing_rate(), tcp_enter_loss(), DBGUNDO(), tcp_undo_cwnd_reduction(), tcp_init_cwnd_reduction(), tcp_cwnd_reduction(), tcp_end_cwnd_reduction(), tcp_mtup_probe_success(), tcp_fastretrans_alert(), tcp_should_expand_sndbuf() and tcp_init_transfer() functions in net/ipv4/tcp_input.c, within the update_params(), tcp_illinois_cong_avoid() and tcp_illinois_ssthresh() functions in net/ipv4/tcp_illinois.c, within the hybla_init() and hybla_cong_avoid() functions in net/ipv4/tcp_hybla.c, within the measure_achieved_throughput(), htcp_recalc_ssthresh() and htcp_cong_avoid() functions in net/ipv4/tcp_htcp.c, within the hstcp_cong_avoid() and hstcp_ssthresh() functions in net/ipv4/tcp_highspeed.c, within the dctcp_ssthresh(), dctcp_react_to_loss() and dctcp_get_info() functions in net/ipv4/tcp_dctcp.c, within the cubictcp_cong_avoid(), cubictcp_recalc_ssthresh(), hystart_update() and cubictcp_acked() functions in net/ipv4/tcp_cubic.c, within the tcp_set_congestion_control(), tcp_cong_avoid_ai(), tcp_reno_cong_avoid(), tcp_reno_ssthresh() and tcp_reno_undo_cwnd() functions in net/ipv4/tcp_cong.c, within the tcp_cdg_hystart_update(), tcp_cdg_backoff(), tcp_cdg_cong_avoid(), tcp_cdg_ssthresh(), tcp_cdg_cwnd_event() and tcp_cdg_init() functions in net/ipv4/tcp_cdg.c, within the bictcp_cong_avoid() and bictcp_recalc_ssthresh() functions in net/ipv4/tcp_bic.c, within the bbr_init_pacing_rate_from_rtt(), bbr_save_cwnd(), bbr_set_cwnd_to_recover_or_restore(), bbr_set_cwnd(), bbr_update_ack_aggregation(), bbr_check_probe_rtt_done() and bbr_undo_cwnd() functions in net/ipv4/tcp_bbr.c, within the tcp_init_sock(), tcp_disconnect(), tcp_get_info() and tcp_get_timestamping_opt_stats() functions in net/ipv4/tcp.c, within the _bpf_setsockopt() function in net/core/filter.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Live Patching
openSUSE Leap
kgraft-patch-4_12_14-122_258-default
kernel-livepatch-5_14_21-150500_55_100-default-debuginfo
kernel-livepatch-5_14_21-150500_55_100-default
kernel-livepatch-SLE15-SP5_Update_25-debugsource
kernel-default-man
dlm-kmp-default
gfs2-kmp-default
cluster-md-kmp-default
kernel-default-base-debuginfo
cluster-md-kmp-default-debuginfo
kernel-syms
dlm-kmp-default-debuginfo
kernel-default-debugsource
kernel-default-devel-debuginfo
ocfs2-kmp-default
kernel-default-kgraft
kernel-default-kgraft-devel
kernel-source
kernel-macros
kernel-devel
kernel-default
kernel-default-devel
gfs2-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-debuginfo
kernel-default-base
kernel-source-rt
kernel-rt
kernel-rt_debug
kernel-rt-vdso
kernel-rt-livepatch
kernel-rt_debug-debuginfo
kernel-rt_debug-devel-debuginfo
dlm-kmp-rt
kernel-rt_debug-devel
kernel-rt-devel
reiserfs-kmp-rt
kernel-syms-rt
kernel-rt-debugsource
kselftests-kmp-rt
cluster-md-kmp-rt
dlm-kmp-rt-debuginfo
ocfs2-kmp-rt
kernel-rt-extra-debuginfo
kselftests-kmp-rt-debuginfo
kernel-rt-extra
gfs2-kmp-rt-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-rt-optional
kernel-rt_debug-vdso-debuginfo
kernel-rt-livepatch-devel
kernel-rt_debug-vdso
kernel-rt-debuginfo
kernel-rt-devel-debuginfo
ocfs2-kmp-rt-debuginfo
kernel-rt_debug-debugsource
kernel-rt-optional-debuginfo
kernel-devel-rt
gfs2-kmp-rt
kernel-rt-vdso-debuginfo
reiserfs-kmp-rt-debuginfo
dlm-kmp-64kb-debuginfo
dtb-mediatek
dtb-xilinx
kselftests-kmp-64kb
dtb-altera
gfs2-kmp-64kb-debuginfo
dtb-hisilicon
dtb-marvell
dtb-allwinner
cluster-md-kmp-64kb-debuginfo
dtb-sprd
reiserfs-kmp-64kb
dtb-nvidia
kselftests-kmp-64kb-debuginfo
dtb-broadcom
gfs2-kmp-64kb
dtb-cavium
kernel-64kb-extra
dtb-apple
dtb-amlogic
kernel-64kb-devel
dtb-arm
kernel-64kb-debugsource
kernel-debug-vdso
kernel-docs
kernel-docs-html
kernel-source-vanilla
kernel-debug
kernel-debug-debugsource
kernel-debug-devel-debuginfo
kernel-debug-devel
kernel-debug-debuginfo
ocfs2-kmp-64kb
kernel-debug-vdso-debuginfo
kernel-default-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso
kernel-kvmsmall-debugsource
kernel-64kb
dtb-exynos
dtb-socionext
kernel-64kb-devel-debuginfo
dtb-rockchip
kernel-default-livepatch
kernel-obs-build-debugsource
kselftests-kmp-default
kernel-default-optional-debuginfo
kernel-obs-build
reiserfs-kmp-default-debuginfo
kernel-default-optional
kselftests-kmp-default-debuginfo
kernel-default-extra
kernel-obs-qa
kernel-default-extra-debuginfo
reiserfs-kmp-default
reiserfs-kmp-64kb-debuginfo
dtb-amd
dtb-amazon
cluster-md-kmp-64kb
dtb-qcom
dtb-freescale
dtb-renesas
ocfs2-kmp-64kb-debuginfo
dtb-apm
kernel-64kb-optional
kernel-64kb-optional-debuginfo
kernel-64kb-extra-debuginfo
dtb-lg
dlm-kmp-64kb
kernel-64kb-debuginfo
dtb-aarch64
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump
kernel-kvmsmall
kernel-kvmsmall-devel
kernel-kvmsmall-devel-debuginfo
kernel-default-livepatch-devel
kernel-kvmsmall-debuginfo
kernel-default-base-rebuild

How to mitigate CVE-2022-49325

Install update from vendor's website.

Linux kernel - update to 5.17.15
kgraft-patch-4_12_14-122_258-default - update to 1-8.3.1
kernel-livepatch-5_14_21-150500_55_100-default-debuginfo - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_100-default - update to 1-150500.11.3.1
kernel-livepatch-SLE15-SP5_Update_25-debugsource - update to 1-150500.11.3.1
kernel-default-man - update to 4.12.14-122.258.1
dlm-kmp-default - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
gfs2-kmp-default - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-default-base-debuginfo - update to 4.12.14-122.258.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-syms - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-default-debugsource - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-default-kgraft - update to 4.12.14-122.258.1
kernel-default-kgraft-devel - update to 4.12.14-122.258.1
kernel-source - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-macros - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-devel - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-default - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-default-devel - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1
kernel-default-base - addressed in versions 4.12.14-122.258.1, 5.14.21-150500.55.100.1.150500.6.47.1
kernel-source-rt - update to 5.14.21-150500.13.91.1
kernel-rt - update to 5.14.21-150500.13.91.1
kernel-rt_debug - update to 5.14.21-150500.13.91.1
kernel-rt-vdso - update to 5.14.21-150500.13.91.1
kernel-rt-livepatch - update to 5.14.21-150500.13.91.1
kernel-rt_debug-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-devel-debuginfo - update to 5.14.21-150500.13.91.1
dlm-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-rt_debug-devel - update to 5.14.21-150500.13.91.1
kernel-rt-devel - update to 5.14.21-150500.13.91.1
reiserfs-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-syms-rt - update to 5.14.21-150500.13.91.1
kernel-rt-debugsource - update to 5.14.21-150500.13.91.1
kselftests-kmp-rt - update to 5.14.21-150500.13.91.1
cluster-md-kmp-rt - update to 5.14.21-150500.13.91.1
dlm-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
ocfs2-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-rt-extra-debuginfo - update to 5.14.21-150500.13.91.1
kselftests-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-extra - update to 5.14.21-150500.13.91.1
gfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
cluster-md-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-optional - update to 5.14.21-150500.13.91.1
kernel-rt_debug-vdso-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-livepatch-devel - update to 5.14.21-150500.13.91.1
kernel-rt_debug-vdso - update to 5.14.21-150500.13.91.1
kernel-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-devel-debuginfo - update to 5.14.21-150500.13.91.1
ocfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-debugsource - update to 5.14.21-150500.13.91.1
kernel-rt-optional-debuginfo - update to 5.14.21-150500.13.91.1
kernel-devel-rt - update to 5.14.21-150500.13.91.1
gfs2-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-rt-vdso-debuginfo - update to 5.14.21-150500.13.91.1
reiserfs-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
dlm-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-mediatek - update to 5.14.21-150500.55.100.1
dtb-xilinx - update to 5.14.21-150500.55.100.1
kselftests-kmp-64kb - update to 5.14.21-150500.55.100.1
dtb-altera - update to 5.14.21-150500.55.100.1
gfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-hisilicon - update to 5.14.21-150500.55.100.1
dtb-marvell - update to 5.14.21-150500.55.100.1
dtb-allwinner - update to 5.14.21-150500.55.100.1
cluster-md-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-sprd - update to 5.14.21-150500.55.100.1
reiserfs-kmp-64kb - update to 5.14.21-150500.55.100.1
dtb-nvidia - update to 5.14.21-150500.55.100.1
kselftests-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-broadcom - update to 5.14.21-150500.55.100.1
gfs2-kmp-64kb - update to 5.14.21-150500.55.100.1
dtb-cavium - update to 5.14.21-150500.55.100.1
kernel-64kb-extra - update to 5.14.21-150500.55.100.1
dtb-apple - update to 5.14.21-150500.55.100.1
dtb-amlogic - update to 5.14.21-150500.55.100.1
kernel-64kb-devel - update to 5.14.21-150500.55.100.1
dtb-arm - update to 5.14.21-150500.55.100.1
kernel-64kb-debugsource - update to 5.14.21-150500.55.100.1
kernel-debug-vdso - update to 5.14.21-150500.55.100.1
kernel-docs - update to 5.14.21-150500.55.100.1
kernel-docs-html - update to 5.14.21-150500.55.100.1
kernel-source-vanilla - update to 5.14.21-150500.55.100.1
kernel-debug - update to 5.14.21-150500.55.100.1
kernel-debug-debugsource - update to 5.14.21-150500.55.100.1
kernel-debug-devel-debuginfo - update to 5.14.21-150500.55.100.1
kernel-debug-devel - update to 5.14.21-150500.55.100.1
kernel-debug-debuginfo - update to 5.14.21-150500.55.100.1
ocfs2-kmp-64kb - update to 5.14.21-150500.55.100.1
kernel-debug-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-vdso - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-vdso - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-debugsource - update to 5.14.21-150500.55.100.1
kernel-64kb - update to 5.14.21-150500.55.100.1
dtb-exynos - update to 5.14.21-150500.55.100.1
dtb-socionext - update to 5.14.21-150500.55.100.1
kernel-64kb-devel-debuginfo - update to 5.14.21-150500.55.100.1
dtb-rockchip - update to 5.14.21-150500.55.100.1
kernel-default-livepatch - update to 5.14.21-150500.55.100.1
kernel-obs-build-debugsource - update to 5.14.21-150500.55.100.1
kselftests-kmp-default - update to 5.14.21-150500.55.100.1
kernel-default-optional-debuginfo - update to 5.14.21-150500.55.100.1
kernel-obs-build - update to 5.14.21-150500.55.100.1
reiserfs-kmp-default-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-optional - update to 5.14.21-150500.55.100.1
kselftests-kmp-default-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-extra - update to 5.14.21-150500.55.100.1
kernel-obs-qa - update to 5.14.21-150500.55.100.1
kernel-default-extra-debuginfo - update to 5.14.21-150500.55.100.1
reiserfs-kmp-default - update to 5.14.21-150500.55.100.1
reiserfs-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-amd - update to 5.14.21-150500.55.100.1
dtb-amazon - update to 5.14.21-150500.55.100.1
cluster-md-kmp-64kb - update to 5.14.21-150500.55.100.1
dtb-qcom - update to 5.14.21-150500.55.100.1
dtb-freescale - update to 5.14.21-150500.55.100.1
dtb-renesas - update to 5.14.21-150500.55.100.1
ocfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-apm - update to 5.14.21-150500.55.100.1
kernel-64kb-optional - update to 5.14.21-150500.55.100.1
kernel-64kb-optional-debuginfo - update to 5.14.21-150500.55.100.1
kernel-64kb-extra-debuginfo - update to 5.14.21-150500.55.100.1
dtb-lg - update to 5.14.21-150500.55.100.1
dlm-kmp-64kb - update to 5.14.21-150500.55.100.1
kernel-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-aarch64 - update to 5.14.21-150500.55.100.1
kernel-zfcpdump-debuginfo - update to 5.14.21-150500.55.100.1
kernel-zfcpdump-debugsource - update to 5.14.21-150500.55.100.1
kernel-zfcpdump - update to 5.14.21-150500.55.100.1
kernel-kvmsmall - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-devel - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-devel-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-livepatch-devel - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-base-rebuild - update to 5.14.21-150500.55.100.1.150500.6.47.1

External References

Related Security Bulletins