CVE-2024-50083: tcp: fix mptcp DSS corruption due to large pmtu xmit
Noroxi assessment
Priority: Monitor (action score 30/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.86% (FIRST EPSS); higher than 59% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Linux Linux 229dfdc36f31a8d47433438bc0e6e1662c4ab404, 4dabcdf581217e60690467a37c956a5b8dbc6bd9, 9729010a0ac5945c1bf6847dd0778d8a1a4b72ac; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 229dfdc36f31a8d47433438bc0e6e1662c4ab404, 4dabcdf581217e60690467a37c956a5b8dbc6bd9, 9729010a0ac5945c1bf6847dd0778d8a1a4b72ac; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In the Linux kernel, the following vulnerability has been resolved: tcp: fix mptcp DSS corruption due to large pmtu xmit Syzkaller was able to trigger a DSS corruption: TCP: request_sock_subflow_v4: Possible SYN flooding on port [::]:20002. Sending cookies. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5227 at net/mptcp/protocol.c:695 __mptcp_move_skbs_from_subflow+0x20a9/0x21f0 net/mptcp/protocol.c:695 Modules linked in: CPU: 0 UID: 0 PID: 5227 Comm: syz-executor350 Not tainted 6.11.0-syzkaller-08829-gaf9c191ac2a0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:__mptcp_move_skbs_from_subflow+0x20a9/0x21f0 net/mptcp/protocol.c:695 Code: 0f b6 dc 31 ff 89 de e8 b5 dd ea f5 89 d8 48 81 c4 50 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 98 da ea f5 90 <0f> 0b 90 e9 47 ff ff ff e8 8a da ea f5 90 0f 0b 90 e9 99 e0 ff ff RSP: 0018:ffffc90000006db8 EFLAGS: 00010246 RAX: ffffffff8ba9df18 RBX: 00000000000055f0 RCX: ffff888030023c00 RDX: 0000000000000100 RSI: 00000000000081e5 RDI: 00000000000055f0 RBP: 1ffff110062bf1ae R08: ffffffff8ba9cf12 R09: 1ffff110062bf1b8 R10: dffffc0000000000 R11: ffffed10062bf1b9 R12: 0000000000000000 R13: dffffc0000000000 R14: 00000000700cec61 R15: 00000000000081e5 FS: 000055556679c380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020287000 CR3: 0000000077892000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> move_skbs_to_msk net/mptcp/protocol.c:811 [inline] mptcp_data_ready+0x29c/0xa90 net/mptcp/protocol.c:854 subflow_data_ready+0x34a/0x920 net/mptcp/subflow.c:1490 tcp_data_queue+0x20fd/0x76c0 net/ipv4/tcp_input.c:5283 tcp_rcv_established+0xfba/0x2020 net/ipv4/tcp_input.c:6237 tcp_v4_do_rcv+0x96d/0xc70 net/ipv4/tcp_ipv4.c:1915 tcp_v4_rcv+0x2dc0/0x37f0 net/ipv4/tcp_ipv4.c:2350 ip_protocol_deliver_rcu+0x22e/0x440 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x341/0x5f0 net/ipv4/ip_input.c:233 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5662 [inline] __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5775 process_backlog+0x662/0x15b0 net/core/dev.c:6107 __napi_poll+0xcb/0x490 net/core/dev.c:6771 napi_poll net/core/dev.c:6840 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6962 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 do_softirq+0x11b/0x1e0 kernel/softirq.c:455 </IRQ> <TASK> __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline] __dev_queue_xmit+0x1764/0x3e80 net/core/dev.c:4451 dev_queue_xmit include/linux/netdevice.h:3094 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:236 ip_local_out net/ipv4/ip_output.c:130 [inline] __ip_queue_xmit+0x118c/0x1b80 net/ipv4/ip_output.c:536 __tcp_transmit_skb+0x2544/0x3b30 net/ipv4/tcp_output.c:1466 tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline] tcp_mtu_probe net/ipv4/tcp_output.c:2547 [inline] tcp_write_xmit+0x641d/0x6bf0 net/ipv4/tcp_output.c:2752 __tcp_push_pending_frames+0x9b/0x360 net/ipv4/tcp_output.c:3015 tcp_push_pending_frames include/net/tcp.h:2107 [inline] tcp_data_snd_check net/ipv4/tcp_input.c:5714 [inline] tcp_rcv_established+0x1026/0x2020 net/ipv4/tcp_input.c:6239 tcp_v4_do_rcv+0x96d/0xc70 net/ipv4/tcp_ipv4.c:1915 sk_backlog_rcv include/net/sock.h:1113 [inline] __release_sock+0x214/0x350 net/core/sock.c:3072 release_sock+0x61/0x1f0 net/core/sock.c:3626 mptcp_push_ ---truncated---
- Published
- Oct 28, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.8% · 59th percentile
- CWE
- —
Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.8%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel5.6 and later · before 5.10.228
- linux linux kernel5.11 and later · before 5.15.169
- linux linux kernel5.16 and later · before 6.1.114
- linux linux kernel6.2 and later · before 6.6.58
- linux linux kernel6.7 and later · before 6.11.5
- linux linux kernel6.12
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 5.6affected
- 85712484110df308215077be6ee21c4e57d7dec2 and later · before c38add9ac0e4d4f418e6443a688491499021add9affected · git
- 85712484110df308215077be6ee21c4e57d7dec2 and later · before 9729010a0ac5945c1bf6847dd0778d8a1a4b72acaffected · git
- 85712484110df308215077be6ee21c4e57d7dec2 and later · before ba8e65814e519eeb17d086952bce7de93f7a40daaffected · git
- 85712484110df308215077be6ee21c4e57d7dec2 and later · before 229dfdc36f31a8d47433438bc0e6e1662c4ab404affected · git
- 85712484110df308215077be6ee21c4e57d7dec2 and later · before db04d1848777ae52a7ab93c4591e7c0bf8f55fb4affected · git
- 85712484110df308215077be6ee21c4e57d7dec2 and later · before 4dabcdf581217e60690467a37c956a5b8dbc6bd9affected · git
- before 5.6not affected · semver
- 5.10.228 and later · up to and including 5.10.*not affected · semver
- 5.15.169 and later · up to and including 5.15.*not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.115-1 | 6.1.115-1 |
| Debian:13 | linux | before 6.11.5-1 | 6.11.5-1 |
| openSUSE:Leap 15.6 | dtb-aarch64 | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-64kb | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-azure | before 6.4.0-150600.8.37.1 | 6.4.0-150600.8.37.1 |
| openSUSE:Leap 15.6 | kernel-debug | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-default | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-default-base | before 6.4.0-150600.23.50.1.150600.12.22.1 | 6.4.0-150600.23.50.1.150600.12.22.1 |
| openSUSE:Leap 15.6 | kernel-docs | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-kvmsmall | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-obs-build | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-obs-qa | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-rt | before 6.4.0-150600.10.39.1 | 6.4.0-150600.10.39.1 |
| openSUSE:Leap 15.6 | kernel-rt_debug | before 6.4.0-150600.10.39.1 | 6.4.0-150600.10.39.1 |
| openSUSE:Leap 15.6 | kernel-source | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-source-azure | before 6.4.0-150600.8.37.1 | 6.4.0-150600.8.37.1 |
| openSUSE:Leap 15.6 | kernel-source-rt | before 6.4.0-150600.10.39.1 | 6.4.0-150600.10.39.1 |
| openSUSE:Leap 15.6 | kernel-syms | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| openSUSE:Leap 15.6 | kernel-syms-azure | before 6.4.0-150600.8.37.1 | 6.4.0-150600.8.37.1 |
| openSUSE:Leap 15.6 | kernel-syms-rt | before 6.4.0-150600.10.39.1 | 6.4.0-150600.10.39.1 |
| openSUSE:Leap 15.6 | kernel-zfcpdump | before 6.4.0-150600.23.50.1 | 6.4.0-150600.23.50.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_11 | before 1-150600.13.3.1 | 1-150600.13.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_11 | before 1-150600.1.3.2 | 1-150600.1.3.2 |
| SUSE:Linux Enterprise Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7-RT_Update_1 | before 1-150700.1.3.1 | 1-150700.1.3.1 |
+27
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
Published before and after this one in the same product
- ← EarlierCVE-2024-50080Oct 28, 2024 · ublk: don't allow user copy for unprivileged device22Monitor
- ← EarlierCVE-2024-50081Oct 28, 2024 · blk-mq: setup queue ->tag_set before initializing hctx22Monitor
- Later →CVE-2024-50084Oct 28, 2024 · net: microchip: vcap api: Fix memory leaks in vcap_api_encode_rule_test()22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 229dfdc36f31a8d47433438bc0e6e1662c4ab404 | Vendor (CNA) |
| Linux Linux | 4dabcdf581217e60690467a37c956a5b8dbc6bd9 | Vendor (CNA) |
| Linux Linux | 9729010a0ac5945c1bf6847dd0778d8a1a4b72ac | Vendor (CNA) |
| Linux Linux | ba8e65814e519eeb17d086952bce7de93f7a40da | Vendor (CNA) |
| Linux Linux | c38add9ac0e4d4f418e6443a688491499021add9 | Vendor (CNA) |
| Linux Linux | db04d1848777ae52a7ab93c4591e7c0bf8f55fb4 | Vendor (CNA) |
| azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 | 6.6.64.2-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 | 6.6.64.2-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 kernel 5.15.167.1-2 on CBL Mariner 2.0 | 5.15.173.1-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 kernel 5.15.167.1-2 on CBL-Mariner 2.0 | 5.15.173.1-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 kernel 5.15.173.1-1 on CBL Mariner 2.0 | 5.15.173.1-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| debian:linux | 6.1.115-1 · Debian:12 | Package registry (OSV) |
| opensuse:dtb-aarch64 | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-64kb | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-debug | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-default | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-default-base | 6.4.0-150600.23.50.1.150600.12.22.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-docs | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-obs-build | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-obs-qa | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-source | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-syms | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:kernel-zfcpdump | 6.4.0-150600.23.50.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| suse:kernel-64kb | 6.4.0-150600.23.50.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6 | Package registry (OSV) |
| suse:kernel-azure | 6.4.0-150600.8.37.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6 | Package registry (OSV) |
| suse:kernel-default | 6.4.0-150600.23.50.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6 | Package registry (OSV) |
| suse:kernel-default-base | 6.4.0-150600.23.50.1.150600.12.22.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6 | Package registry (OSV) |
| suse:kernel-docs | 6.4.0-150600.23.50.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP6 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP6_Update_11 | 1-150600.13.3.1 · SUSE:Linux Enterprise Live Patching 15 SP6 | Package registry (OSV) |
+6
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-24-1781 · Oct 30, 2024(Linux Kernel Güvenlik Bildirimi)
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (8 more)Show less
- git.kernel.org/stable/c/4dabcdf581217e60690467a37c956a5b8dbc6bd9
- git.kernel.org/stable/c/9729010a0ac5945c1bf6847dd0778d8a1a4b72ac
- git.kernel.org/stable/c/ba8e65814e519eeb17d086952bce7de93f7a40da
- git.kernel.org/stable/c/c38add9ac0e4d4f418e6443a688491499021add9
- git.kernel.org/stable/c/db04d1848777ae52a7ab93c4591e7c0bf8f55fb4
- lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- security.netapp.com/advisory/ntap-20250523-0010/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.