net/mlx5: Fix error path in multi-packet WQE transmit
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix error path in multi-packet WQE transmit Remove the erroneous unmap in case no DMA mapping was established The multi-packet WQE transmit code attempts to obtain a DMA mapping for the skb. This could fail, e.g. under memory pressure, when the IOMMU driver just can't allocate more memory for page tables. While the code tries to handle this in the path below the err_unmap label it erroneously unmaps one entry from the sq's FIFO list of active mappings. Since the current map attempt failed this unmap is removing some random DMA mapping that might still be required. If the PCI function now presents that IOVA, the IOMMU may assumes a rogue DMA access and e.g. on s390 puts the PCI function in error state. The erroneous behavior was seen in a stress-test environment that created memory pressure.
- Published
- Oct 21, 2024
- Updated
- Aug 5, 2026
- EPSS
- 0.3% · 23th percentile
- CWE
- CWE-755
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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.
CNA vs NVD score
- NVD
- 5.5
- CNA · Linux
- 7.8
- 2.3 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.
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 kernel5.10 and later · before 5.10.227
- linux linux kernel5.11 and later · before 5.15.168
- linux linux kernel5.16 and later · before 6.1.113
- linux linux kernel6.2 and later · before 6.6.55
- linux linux kernel6.7 and later · before 6.10.14
- linux linux kernel6.11 and later · before 6.11.3
- 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
- 5.10affected
- 5af75c747e2a868abbf8611494b50ed5e076fca7 and later · before ca36d6c1a49b6965c86dd528a73f38bc62d9c625affected · git
- 5af75c747e2a868abbf8611494b50ed5e076fca7 and later · before ce828b347cf1b3c1b12b091d02463c35ce5097f5affected · git
- 5af75c747e2a868abbf8611494b50ed5e076fca7 and later · before fc357e78176945ca7bcacf92ab794b9ccd41b4f4affected · git
- 5af75c747e2a868abbf8611494b50ed5e076fca7 and later · before 26fad69b34fcba80d5c7d9e651f628e6ac927754affected · git
- 5af75c747e2a868abbf8611494b50ed5e076fca7 and later · before ecf310aaf256acbc8182189fe0aa1021c3ddef72affected · git
- 5af75c747e2a868abbf8611494b50ed5e076fca7 and later · before 8bb8c12fb5e2b1f03d603d493c92941676f109b5affected · git
- 5af75c747e2a868abbf8611494b50ed5e076fca7 and later · before 2bcae12c795f32ddfbf8c80d1b5f1d3286341c32affected · git
- before 5.10not affected · semver
- 5.10.227 and later · up to and including 5.10.*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 6.11.4-1 | 6.11.4-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
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- 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 | 26fad69b34fcba80d5c7d9e651f628e6ac927754 | Vendor (CNA) |
| Linux Linux | 2bcae12c795f32ddfbf8c80d1b5f1d3286341c32 | Vendor (CNA) |
| Linux Linux | 8bb8c12fb5e2b1f03d603d493c92941676f109b5 | Vendor (CNA) |
| Linux Linux | ca36d6c1a49b6965c86dd528a73f38bc62d9c625 | Vendor (CNA) |
| Linux Linux | ce828b347cf1b3c1b12b091d02463c35ce5097f5 | Vendor (CNA) |
| Linux Linux | ecf310aaf256acbc8182189fe0aa1021c3ddef72 | Vendor (CNA) |
| Linux Linux | fc357e78176945ca7bcacf92ab794b9ccd41b4f4 | Vendor (CNA) |
| debian:linux | 6.1.115-1 · Debian:12 | 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-2024-500020 days apartstatic_call: Handle module init failure correctly in static_call_del_module()22Monitor
- CVE-2024-5017618 days apartremoteproc: k3-r5: Fix error handling when power-up failed22Monitor
- CVE-2024-5020218 days apartnilfs2: propagate directory read errors from nilfs_find_entry()22Monitor
- CVE-2024-5306329 days apartmedia: dvbdev: prevent the risk of out of memory access22Monitor
- CVE-2022-48673171 days apartnet/smc: Fix possible access to freed memory in link clear22Monitor
- CVE-2021-46928237 days apartparisc: Clear stale IIR value on instruction access rights trap22Monitor
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
- 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-755 · Improper Handling of Exceptional ConditionsCVSS 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/26fad69b34fcba80d5c7d9e651f628e6ac927754
- git.kernel.org/stable/c/2bcae12c795f32ddfbf8c80d1b5f1d3286341c32
- git.kernel.org/stable/c/8bb8c12fb5e2b1f03d603d493c92941676f109b5
- git.kernel.org/stable/c/ca36d6c1a49b6965c86dd528a73f38bc62d9c625
- git.kernel.org/stable/c/ce828b347cf1b3c1b12b091d02463c35ce5097f5
- git.kernel.org/stable/c/ecf310aaf256acbc8182189fe0aa1021c3ddef72
- git.kernel.org/stable/c/fc357e78176945ca7bcacf92ab794b9ccd41b4f4
- lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- cert-portal.siemens.com/productcert/html/ssa-265688.html
- cert-portal.siemens.com/productcert/html/ssa-355557.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.