net: avoid race between device unregistration and ethnl ops
In the Linux kernel, the following vulnerability has been resolved: net: avoid race between device unregistration and ethnl ops The following trace can be seen if a device is being unregistered while its number of channels are being modified. DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 3 PID: 3754 at kernel/locking/mutex.c:564 __mutex_lock+0xc8a/0x1120 CPU: 3 UID: 0 PID: 3754 Comm: ethtool Not tainted 6.13.0-rc6+ #771 RIP: 0010:__mutex_lock+0xc8a/0x1120 Call Trace: <TASK> ethtool_check_max_channel+0x1ea/0x880 ethnl_set_channels+0x3c3/0xb10 ethnl_default_set_doit+0x306/0x650 genl_family_rcv_msg_doit+0x1e3/0x2c0 genl_rcv_msg+0x432/0x6f0 netlink_rcv_skb+0x13d/0x3b0 genl_rcv+0x28/0x40 netlink_unicast+0x42e/0x720 netlink_sendmsg+0x765/0xc20 __sys_sendto+0x3ac/0x420 __x64_sys_sendto+0xe0/0x1c0 do_syscall_64+0x95/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7e This is because unregister_netdevice_many_notify might run before the rtnl lock section of ethnl operations, eg. set_channels in the above example. In this example the rss lock would be destroyed by the device unregistration path before being used again, but in general running ethnl operations while dismantle has started is not a good idea. Fix this by denying any operation on devices being unregistered. A check was already there in ethnl_ops_begin, but not wide enough. Note that the same issue cannot be seen on the ioctl version (__dev_ethtool) because the device reference is retrieved from within the rtnl lock section there. Once dismantle started, the net device is unlisted and no reference will be found.
- BDU:2025-07711
- SUSE-SU-2025:02852-1
- SUSE-SU-2025:03097-1
- SUSE-SU-2025:03100-1
- SUSE-SU-2025:03108-1
- SUSE-SU-2025:03111-1
- SUSE-SU-2025:03123-1
- SUSE-SU-2025:03185-1
- SUSE-SU-2025:03186-1
- SUSE-SU-2025:03188-1
- SUSE-SU-2025:03191-1
- SUSE-SU-2025:03194-1
- SUSE-SU-2025:03195-1
- SUSE-SU-2025:03207-1
- SUSE-SU-2025:03208-1
- SUSE-SU-2025:03209-1
- SUSE-SU-2025:03210-1
- SUSE-SU-2025:03215-1
- SUSE-SU-2025:03217-1
- SUSE-SU-2025:03223-1
- Published
- Feb 13, 2025
- Updated
- Aug 5, 2026
- EPSS
- 0.2% · 6th percentile
- CWE
- CWE-362
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Report tools
Action score
18
Monitor
Low priority for now.
- CVSS
- 18 / 40 · 4.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 4.7
- CNA · Linux
- 7.8
- 3.1 point gap
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected 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 kernel5.10.87 and later · before 5.11
- linux linux kernel5.15.8 and later · before 5.15.179
- linux linux kernel5.16.1 and later · before 6.1.129
- linux linux kernel6.2 and later · before 6.6.76
- linux linux kernel6.7 and later · before 6.12.13
- linux linux kernel6.13 and later · before 6.13.2
- linux linux kernel5.16
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
- 7c26da3be1e9843a15b5318f90db8a564479d2ac, 5.16affected
- cfd719f04267108f5f5bf802b9d7de69e99a99f9 and later · before 26bc6076798aa4dc83a07d0a386f9e57c94e8517affected · git
- dde91ccfa25fd58f64c397d91b81a4b393100ffa and later · before b1cb37a31a482df3dd35a6ac166282dac47664f4affected · git
- dde91ccfa25fd58f64c397d91b81a4b393100ffa and later · before 2f29127e94ae9fdc7497331003d6860e9551cdf3affected · git
- dde91ccfa25fd58f64c397d91b81a4b393100ffa and later · before b382ab9b885cbb665e0e70a727f101c981b4edf3affected · git
- dde91ccfa25fd58f64c397d91b81a4b393100ffa and later · before 4dc880245f9b529fa8f476b5553c799d2848b47baffected · git
- dde91ccfa25fd58f64c397d91b81a4b393100ffa and later · before 12e070eb6964b341b41677fd260af5a305316a1faffected · git
- 5.15.8 and later · before 5.15.179affected · semver
- 5.10.87 and later · before 5.11affected · semver
- before 5.16not 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 6.1.129-1 | 6.1.129-1 |
| Debian:13 | linux | before 6.12.13-1 | 6.12.13-1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-64kb | before 5.14.21-150500.55.121.2 | 5.14.21-150500.55.121.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-docs | before 5.14.21-150500.55.121.1 | 5.14.21-150500.55.121.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-obs-build | before 5.14.21-150500.55.121.1 | 5.14.21-150500.55.121.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-syms | before 5.14.21-150500.55.121.1 | 5.14.21-150500.55.121.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_19 | before 14-150500.2.1 | 14-150500.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_20 | before 14-150500.2.1 | 14-150500.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_21 | before 10-150500.2.1 | 10-150500.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_23 | before 6-150500.2.1 | 6-150500.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_24 | before 6-150500.2.1 | 6-150500.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_25 | before 5-150500.2.1 | 5-150500.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_27 | before 4-150500.2.1 | 4-150500.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_28 | before 4-150500.2.1 | 4-150500.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_29 | before 3-150500.2.1 | 3-150500.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_30 | before 1-150500.11.5.1 | 1-150500.11.5.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_3 | before 20-150600.2.1 | 20-150600.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_4 | before 16-150600.2.1 | 16-150600.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_5 | before 15-150600.2.1 | 15-150600.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_6 | before 11-150600.2.1 | 11-150600.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_7 | before 11-150600.2.1 | 11-150600.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_9 | before 6-150600.2.1 | 6-150600.2.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_0 | before 21-150600.3.1 | 21-150600.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_1 | before 20-150600.2.1 | 20-150600.2.1 |
+18
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- 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
- 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
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
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 | 12e070eb6964b341b41677fd260af5a305316a1f | Vendor (CNA) |
| Linux Linux | 26bc6076798aa4dc83a07d0a386f9e57c94e8517 | Vendor (CNA) |
| Linux Linux | 2f29127e94ae9fdc7497331003d6860e9551cdf3 | Vendor (CNA) |
| Linux Linux | 4dc880245f9b529fa8f476b5553c799d2848b47b | Vendor (CNA) |
| Linux Linux | 5.11 | Vendor (CNA) |
| Linux Linux | 5.15.179 | Vendor (CNA) |
| Linux Linux | b1cb37a31a482df3dd35a6ac166282dac47664f4 | Vendor (CNA) |
| Linux Linux | b382ab9b885cbb665e0e70a727f101c981b4edf3 | Vendor (CNA) |
| debian:linux | 6.1.129-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5_Update_19 | 14-150500.2.1 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5_Update_20 | 14-150500.2.1 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5_Update_21 | 10-150500.2.1 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5_Update_24 | 6-150500.2.1 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5_Update_28 | 4-150500.2.1 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP6-RT_Update_0 | 21-150600.3.1 · SUSE:Linux Enterprise Live Patching 15 SP6 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP6-RT_Update_1 | 20-150600.2.1 · SUSE:Linux Enterprise Live Patching 15 SP6 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP6-RT_Update_5 | 14-150600.2.1 · SUSE:Linux Enterprise Live Patching 15 SP6 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP6-RT_Update_6 | 11-150600.2.1 · SUSE:Linux Enterprise Live Patching 15 SP6 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP6-RT_Update_7 | 11-150600.2.1 · SUSE:Linux Enterprise Live Patching 15 SP6 | Package registry (OSV) |
| suse:kernel-rt | 5.14.21-150500.13.103.2 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-source-rt | 5.14.21-150500.13.103.2 · SUSE:Linux Enterprise Micro 5.5 | 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).
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.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.1/AV:L/AC:H/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.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; 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 helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/12e070eb6964b341b41677fd260af5a305316a1f
- git.kernel.org/stable/c/26bc6076798aa4dc83a07d0a386f9e57c94e8517
- git.kernel.org/stable/c/2f29127e94ae9fdc7497331003d6860e9551cdf3
- git.kernel.org/stable/c/4dc880245f9b529fa8f476b5553c799d2848b47b
- git.kernel.org/stable/c/b1cb37a31a482df3dd35a6ac166282dac47664f4
- git.kernel.org/stable/c/b382ab9b885cbb665e0e70a727f101c981b4edf3
- lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- cert-portal.siemens.com/productcert/html/ssa-082556.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.