9p/xen: fix release of IRQ
In the Linux kernel, the following vulnerability has been resolved: 9p/xen: fix release of IRQ Kernel logs indicate an IRQ was double-freed. Pass correct device ID during IRQ release. [Dominique: remove confusing variable reset to 0]
- Published
- Dec 28, 2024
- Updated
- Aug 5, 2026
- EPSS
- 0.2% · 14th percentile
- CWE
- CWE-415
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 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
- 7.8
- CNA · Linux
- 8.4
- 0.6 point gap
CVSS:3.1/AV:L/AC:L/PR:N/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.
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 kernel4.12 and later · before 4.19.325
- linux linux kernel4.20 and later · before 5.4.287
- linux linux kernel5.5 and later · before 5.10.231
- linux linux kernel5.11 and later · before 5.15.174
- linux linux kernel5.16 and later · before 6.1.120
- linux linux kernel6.2 and later · before 6.6.64
- linux linux kernel6.7 and later · before 6.11.11
- linux linux kernel6.12 and later · before 6.12.2
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
- 4.12affected
- 71ebd71921e451f0f942ddfe85d01e31ddc6eb88 and later · before 692eb06703afc3e24d889d77e94a0e20229f6a4aaffected · git
- 71ebd71921e451f0f942ddfe85d01e31ddc6eb88 and later · before d74b4b297097bd361b8a9abfde9b521ff464ea9caffected · git
- 71ebd71921e451f0f942ddfe85d01e31ddc6eb88 and later · before 7f5a2ed5c1810661e6b03f5a4ebf17682cdea850affected · git
- 71ebd71921e451f0f942ddfe85d01e31ddc6eb88 and later · before 4950408793b118cb8075bcee1f033b543fb719faaffected · git
- 71ebd71921e451f0f942ddfe85d01e31ddc6eb88 and later · before b9e26059664bd9ebc64a0e8f5216266fc9f84265affected · git
- 71ebd71921e451f0f942ddfe85d01e31ddc6eb88 and later · before 2bb3ee1bf237557daea1d58007d2e1d4a6502ccfaffected · git
- 71ebd71921e451f0f942ddfe85d01e31ddc6eb88 and later · before d888f5f5d76b2722c267e6bdf51d445d60647b7baffected · git
- 71ebd71921e451f0f942ddfe85d01e31ddc6eb88 and later · before 530bc9f03a102fac95b07cda513bfc16ff69e0eeaffected · git
- 71ebd71921e451f0f942ddfe85d01e31ddc6eb88 and later · before e43c608f40c065b30964f0a806348062991b802daffected · git
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 6.1.123-1 | 6.1.123-1 |
| Debian:13 | linux | before 6.12.3-1 | 6.12.3-1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-64kb | before 5.3.18-150300.59.188.1 | 5.3.18-150300.59.188.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-default-base | before 5.3.18-150300.59.188.1.150300.18.111.1 | 5.3.18-150300.59.188.1.150300.18.111.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-docs | before 5.3.18-150300.59.188.1 | 5.3.18-150300.59.188.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-obs-build | before 5.3.18-150300.59.188.1 | 5.3.18-150300.59.188.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-preempt | before 5.3.18-150300.59.188.1 | 5.3.18-150300.59.188.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-source | before 5.3.18-150300.59.188.1 | 5.3.18-150300.59.188.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-syms | before 5.3.18-150300.59.188.1 | 5.3.18-150300.59.188.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-64kb | before 5.14.21-150400.24.150.1 | 5.14.21-150400.24.150.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-docs | before 5.14.21-150400.24.150.1 | 5.14.21-150400.24.150.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-obs-build | before 5.14.21-150400.24.150.1 | 5.14.21-150400.24.150.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-source | before 5.14.21-150400.24.150.1 | 5.14.21-150400.24.150.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-syms | before 5.14.21-150400.24.150.1 | 5.14.21-150400.24.150.1 |
| SUSE:Linux Enterprise Live Patching 15 SP3 | kernel-default | before 5.3.18-150300.59.188.1 | 5.3.18-150300.59.188.1 |
| SUSE:Linux Enterprise Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_52 | before 1-150300.7.3.1 | 1-150300.7.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_36 | before 1-150400.9.3.1 | 1-150400.9.3.1 |
| SUSE:Linux Enterprise Micro 5.1 | kernel-rt | before 5.3.18-150300.197.1 | 5.3.18-150300.197.1 |
| SUSE:Linux Enterprise Micro 5.1 | kernel-source-rt | before 5.3.18-150300.197.1 | 5.3.18-150300.197.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-default | before 5.14.21-150400.24.150.1 | 5.14.21-150400.24.150.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-default-base | before 5.14.21-150400.24.150.1.150400.24.74.1 | 5.14.21-150400.24.150.1.150400.24.74.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-rt | before 5.14.21-150400.15.109.1 | 5.14.21-150400.15.109.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-source-rt | before 5.14.21-150400.15.109.1 | 5.14.21-150400.15.109.1 |
| SUSE:Linux Enterprise Server 15 SP3-LTSS | kernel-zfcpdump | before 5.3.18-150300.59.188.1 | 5.3.18-150300.59.188.1 |
+1
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 | 2bb3ee1bf237557daea1d58007d2e1d4a6502ccf | Vendor (CNA) |
| Linux Linux | 4950408793b118cb8075bcee1f033b543fb719fa | Vendor (CNA) |
| Linux Linux | 530bc9f03a102fac95b07cda513bfc16ff69e0ee | Vendor (CNA) |
| Linux Linux | 692eb06703afc3e24d889d77e94a0e20229f6a4a | Vendor (CNA) |
| Linux Linux | 7f5a2ed5c1810661e6b03f5a4ebf17682cdea850 | Vendor (CNA) |
| Linux Linux | b9e26059664bd9ebc64a0e8f5216266fc9f84265 | Vendor (CNA) |
| Linux Linux | d74b4b297097bd361b8a9abfde9b521ff464ea9c | Vendor (CNA) |
| Linux Linux | d888f5f5d76b2722c267e6bdf51d445d60647b7b | Vendor (CNA) |
| Linux Linux | e43c608f40c065b30964f0a806348062991b802d | 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 5.15.173.1-2 on CBL Mariner 2.0 | 5.15.176.3-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 kernel 5.15.173.1-2 on CBL-Mariner 2.0 | 5.15.176.3-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 kernel 5.15.176.3-1 on CBL Mariner 2.0 | 5.15.176.3-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| debian:linux | 6.1.123-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-64kb | 5.3.18-150300.59.188.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-default | 5.3.18-150300.59.188.1 · SUSE:Linux Enterprise Live Patching 15 SP3 | Package registry (OSV) |
| suse:kernel-default-base | 5.3.18-150300.59.188.1.150300.18.111.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-docs | 5.3.18-150300.59.188.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP3_Update_52 | 1-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3 | Package registry (OSV) |
| suse:kernel-obs-build | 5.3.18-150300.59.188.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-preempt | 5.3.18-150300.59.188.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-rt | 5.3.18-150300.197.1 · SUSE:Linux Enterprise Micro 5.1 | Package registry (OSV) |
| suse:kernel-source | 5.3.18-150300.59.188.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-source-rt | 5.3.18-150300.197.1 · SUSE:Linux Enterprise Micro 5.1 | Package registry (OSV) |
| suse:kernel-syms | 5.3.18-150300.59.188.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-zfcpdump | 5.3.18-150300.59.188.1 · SUSE:Linux Enterprise Server 15 SP3-LTSS | 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.
- CVE-2026-31608482 days apartsmb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()39Monitor
- CVE-2026-31609482 days apartsmb: client: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush()39Monitor
- CVE-2026-43011489 days apartnet/x25: Fix potential double free of skb39Monitor
- CVE-2026-43414496 days apartscsi: qla2xxx: Completely fix fcport double free39Monitor
- CVE-2024-35814225 days apartswiotlb: Fix double-allocation of slots due to broken alignment handling35Monitor
- CVE-2026-43249494 days apart9p/xen: protect xen_9pfs_front_free against concurrent calls35Monitor
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.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-415 · Double FreeCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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/2bb3ee1bf237557daea1d58007d2e1d4a6502ccf
- git.kernel.org/stable/c/4950408793b118cb8075bcee1f033b543fb719fa
- git.kernel.org/stable/c/530bc9f03a102fac95b07cda513bfc16ff69e0ee
- git.kernel.org/stable/c/692eb06703afc3e24d889d77e94a0e20229f6a4a
- git.kernel.org/stable/c/7f5a2ed5c1810661e6b03f5a4ebf17682cdea850
- git.kernel.org/stable/c/b9e26059664bd9ebc64a0e8f5216266fc9f84265
- git.kernel.org/stable/c/d74b4b297097bd361b8a9abfde9b521ff464ea9c
- git.kernel.org/stable/c/d888f5f5d76b2722c267e6bdf51d445d60647b7b
- git.kernel.org/stable/c/e43c608f40c065b30964f0a806348062991b802d
- lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.