tipc: fix kernel panic when enabling bearer
In the Linux kernel, the following vulnerability has been resolved: tipc: fix kernel panic when enabling bearer When enabling a bearer on a node, a kernel panic is observed: [ 4.498085] RIP: 0010:tipc_mon_prep+0x4e/0x130 [tipc] ... [ 4.520030] Call Trace: [ 4.520689] <IRQ> [ 4.521236] tipc_link_build_proto_msg+0x375/0x750 [tipc] [ 4.522654] tipc_link_build_state_msg+0x48/0xc0 [tipc] [ 4.524034] __tipc_node_link_up+0xd7/0x290 [tipc] [ 4.525292] tipc_rcv+0x5da/0x730 [tipc] [ 4.526346] ? __netif_receive_skb_core+0xb7/0xfc0 [ 4.527601] tipc_l2_rcv_msg+0x5e/0x90 [tipc] [ 4.528737] __netif_receive_skb_list_core+0x20b/0x260 [ 4.530068] netif_receive_skb_list_internal+0x1bf/0x2e0 [ 4.531450] ? dev_gro_receive+0x4c2/0x680 [ 4.532512] napi_complete_done+0x6f/0x180 [ 4.533570] virtnet_poll+0x29c/0x42e [virtio_net] ... The node in question is receiving activate messages in another thread after changing bearer status to allow message sending/ receiving in current thread: thread 1 | thread 2 -------- | -------- | tipc_enable_bearer() | test_and_set_bit_lock() | tipc_bearer_xmit_skb() | | tipc_l2_rcv_msg() | tipc_rcv() | __tipc_node_link_up() | tipc_link_build_state_msg() | tipc_link_build_proto_msg() | tipc_mon_prep() | { | ... | // null-pointer dereference | u16 gen = mon->dom_gen; | ... | } // Not being executed yet | tipc_mon_create() | { | ... | // allocate | mon = kzalloc(); | ... | } | Monitoring pointer in thread 2 is dereferenced before monitoring data is allocated in thread 1. This causes kernel panic. This commit fixes it by allocating the monitoring data before enabling the bearer to receive messages.
- Published
- Jul 16, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 16th percentile
- CWE
- CWE-476
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| 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 kernel4.8 and later · before 5.10.106
- linux linux kernel5.11 and later · before 5.15.29
- linux linux kernel5.16 and later · before 5.16.15
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
- 4.8affected
- 35c55c9877f8de0ab129fa1a309271d0ecc868b9 and later · before 2de76d37d4a6dca9b96ea51da24d4290e6cfa1a5affected · git
- 35c55c9877f8de0ab129fa1a309271d0ecc868b9 and later · before f96dc3adb9a97b8f3dfdb88796483491a3006b71affected · git
- 35c55c9877f8de0ab129fa1a309271d0ecc868b9 and later · before f4f59fdbc748805b08c13dae14c01f0518c77c94affected · git
- 35c55c9877f8de0ab129fa1a309271d0ecc868b9 and later · before be4977b847f5d5cedb64d50eaaf2218c3a55a3a3affected · git
- before 4.8not affected · semver
- 5.10.106 and later · up to and including 5.10.*not affected · semver
- 5.15.29 and later · up to and including 5.15.*not affected · semver
- 5.16.15 and later · up to and including 5.16.*not affected · semver
- 5.17 and laternot affected · original_commit_for_fix
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 5.16.18-1 | 5.16.18-1 |
| openSUSE:Leap 15.5 | dtb-aarch64 | before 5.14.21-150500.55.80.1 | 5.14.21-150500.55.80.1 |
| openSUSE:Leap 15.5 | kernel-debug | before 5.14.21-150500.55.80.2 | 5.14.21-150500.55.80.2 |
| openSUSE:Leap 15.5 | kernel-kvmsmall | before 5.14.21-150500.55.80.2 | 5.14.21-150500.55.80.2 |
| openSUSE:Leap 15.5 | kernel-obs-qa | before 5.14.21-150500.55.80.1 | 5.14.21-150500.55.80.1 |
| SUSE:Linux Enterprise High Availability Extension 12 SP5 | kernel-default | before 4.12.14-122.228.1 | 4.12.14-122.228.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_60 | before 1-8.3.1 | 1-8.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_19 | before 1-150500.11.3.2 | 1-150500.11.3.2 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_19 | before 1-150500.11.3.2 | 1-150500.11.3.2 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_19 | before 1-150500.11.3.2 | 1-150500.11.3.2 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_19 | before 1-150500.11.3.2 | 1-150500.11.3.2 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default | before 5.14.21-150500.55.80.2 | 5.14.21-150500.55.80.2 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default | before 5.14.21-150500.55.80.2 | 5.14.21-150500.55.80.2 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default-base | before 5.14.21-150500.55.80.2.150500.6.35.6 | 5.14.21-150500.55.80.2.150500.6.35.6 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default-base | before 5.14.21-150500.55.80.2.150500.6.35.6 | 5.14.21-150500.55.80.2.150500.6.35.6 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-rt | before 5.14.21-150500.13.67.3 | 5.14.21-150500.13.67.3 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-rt | before 5.14.21-150500.13.67.3 | 5.14.21-150500.13.67.3 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-source-rt | before 5.14.21-150500.13.67.3 | 5.14.21-150500.13.67.3 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-source-rt | before 5.14.21-150500.13.67.3 | 5.14.21-150500.13.67.3 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP5 | kernel-64kb | before 5.14.21-150500.55.80.2 | 5.14.21-150500.55.80.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP5 | kernel-64kb | before 5.14.21-150500.55.80.2 | 5.14.21-150500.55.80.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP5 | kernel-source | before 5.14.21-150500.55.80.2 | 5.14.21-150500.55.80.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP5 | kernel-source | before 5.14.21-150500.55.80.2 | 5.14.21-150500.55.80.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP5 | kernel-zfcpdump | before 5.14.21-150500.55.80.2 | 5.14.21-150500.55.80.2 |
+28
Same product
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- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
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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 | 2de76d37d4a6dca9b96ea51da24d4290e6cfa1a5 | Vendor (CNA) |
| Linux Linux | be4977b847f5d5cedb64d50eaaf2218c3a55a3a3 | Vendor (CNA) |
| Linux Linux | f4f59fdbc748805b08c13dae14c01f0518c77c94 | Vendor (CNA) |
| Linux Linux | f96dc3adb9a97b8f3dfdb88796483491a3006b71 | Vendor (CNA) |
| debian:linux | 5.16.18-1 · Debian:12 | Package registry (OSV) |
| opensuse:kernel-azure | 5.14.21-150500.33.66.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:kernel-rt | 5.14.21-150500.13.67.3 · openSUSE:Leap Micro 5.5 | Package registry (OSV) |
| opensuse:kernel-source-azure | 5.14.21-150500.33.66.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:kernel-syms-azure | 5.14.21-150500.33.66.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| suse:kernel-azure | 5.14.21-150500.33.66.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP5 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5-RT_Update_19 | 1-150500.11.3.2 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-rt | 4.12.14-10.200.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-rt | 5.14.21-150500.13.67.3 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-rt_debug | 4.12.14-10.200.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-rt_debug | 5.14.21-150500.13.67.3 · SUSE:Real Time Module 15 SP5 | Package registry (OSV) |
| suse:kernel-source-azure | 5.14.21-150500.33.66.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP5 | Package registry (OSV) |
| suse:kernel-source-rt | 4.12.14-10.200.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-source-rt | 5.14.21-150500.13.67.3 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-syms-azure | 5.14.21-150500.33.66.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP5 | Package registry (OSV) |
| suse:kernel-syms-rt | 4.12.14-10.200.1 · SUSE:Linux Enterprise Real Time 12 SP5 | Package registry (OSV) |
| suse:kernel-syms-rt | 5.14.21-150500.13.67.1 · SUSE:Real Time Module 15 SP5 | Package registry (OSV) |
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.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
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-24-0977 · Jul 17, 2024(Linux Kernel Güncellemesi)
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- 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
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/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
- git.kernel.org/stable/c/2de76d37d4a6dca9b96ea51da24d4290e6cfa1a5
- git.kernel.org/stable/c/be4977b847f5d5cedb64d50eaaf2218c3a55a3a3
- git.kernel.org/stable/c/f4f59fdbc748805b08c13dae14c01f0518c77c94
- git.kernel.org/stable/c/f96dc3adb9a97b8f3dfdb88796483491a3006b71
Vendor advisories and official records. Exploit/PoC links are deliberately left out.