net: ena: Fix incorrect descriptor free behavior
In the Linux kernel, the following vulnerability has been resolved: net: ena: Fix incorrect descriptor free behavior ENA has two types of TX queues: - queues which only process TX packets arriving from the network stack - queues which only process TX packets forwarded to it by XDP_REDIRECT or XDP_TX instructions The ena_free_tx_bufs() cycles through all descriptors in a TX queue and unmaps + frees every descriptor that hasn't been acknowledged yet by the device (uncompleted TX transactions). The function assumes that the processed TX queue is necessarily from the first category listed above and ends up using napi_consume_skb() for descriptors belonging to an XDP specific queue. This patch solves a bug in which, in case of a VF reset, the descriptors aren't freed correctly, leading to crashes.
- Published
- May 20, 2024
- Updated
- Aug 5, 2026
- EPSS
- 0.3% · 16th percentile
- CWE
- —
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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 |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux10.0
- linux linux kernel5.11 and later · before 5.15.156
- linux linux kernel5.16 and later · before 6.1.87
- linux linux kernel5.6 and later · before 5.10.216
- linux linux kernel6.7 and later · before 6.8.7
- linux linux kernel6.2 and later · before 6.6.28
- linux linux kernel6.9
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
- 548c4940b9f1f527f81509468dd60b61418880b6 and later · before b26aa765f7437e1bbe8db4c1641b12bd5dd378f0affected · git
- 548c4940b9f1f527f81509468dd60b61418880b6 and later · before fdfbf54d128ab6ab255db138488f9650485795a2affected · git
- 548c4940b9f1f527f81509468dd60b61418880b6 and later · before 19ff8fed3338898b70b2aad831386c78564912e1affected · git
- 548c4940b9f1f527f81509468dd60b61418880b6 and later · before 5c7f2240d9835a7823d87f7460d8eae9f4e504c7affected · git
- 548c4940b9f1f527f81509468dd60b61418880b6 and later · before c31baa07f01307b7ae05f3ce32b89d8e2ba0cc1daffected · git
- 548c4940b9f1f527f81509468dd60b61418880b6 and later · before bf02d9fe00632d22fa91d34749c7aacf397b6cdeaffected · git
- before 5.6not affected · semver
- 5.10.216 and later · up to and including 5.10.*not affected · semver
- 5.15.156 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 |
|---|---|---|---|
| AlmaLinux:9 | bpftool | before 7.3.0-427.26.1.el9_4 | 7.3.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-core | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-core | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-devel | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-modules | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-devel | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-devel-matched | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-modules | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-modules-core | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-64k-modules-extra | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-abi-stablelists | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-core | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-cross-headers | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-debug | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-debug-core | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-debug-devel | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-debug-devel-matched | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
| AlmaLinux:9 | kernel-debug-modules | before 5.14.0-427.26.1.el9_4 | 5.14.0-427.26.1.el9_4 |
+96
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 | 19ff8fed3338898b70b2aad831386c78564912e1 | Vendor (CNA) |
| Linux Linux | 5c7f2240d9835a7823d87f7460d8eae9f4e504c7 | Vendor (CNA) |
| Linux Linux | b26aa765f7437e1bbe8db4c1641b12bd5dd378f0 | Vendor (CNA) |
| Linux Linux | bf02d9fe00632d22fa91d34749c7aacf397b6cde | Vendor (CNA) |
| Linux Linux | c31baa07f01307b7ae05f3ce32b89d8e2ba0cc1d | Vendor (CNA) |
| Linux Linux | fdfbf54d128ab6ab255db138488f9650485795a2 | Vendor (CNA) |
| almalinux:bpftool | 7.3.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-core | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-core | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel-matched | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-core | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-extra | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-devel | 5.14.0-427.26.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| debian:linux | 6.1.90-1 · Debian:12 | Package registry (OSV) |
| red hat:kernel-rt | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-core | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-core | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-debuginfo | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-devel | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-kvm | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-modules | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-modules-core | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-modules-extra | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
| red hat:kernel-rt-debuginfo | 0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfv | Package registry (OSV) |
+2
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.
- 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)
—
CVSS 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/19ff8fed3338898b70b2aad831386c78564912e1
- git.kernel.org/stable/c/5c7f2240d9835a7823d87f7460d8eae9f4e504c7
- git.kernel.org/stable/c/b26aa765f7437e1bbe8db4c1641b12bd5dd378f0
- git.kernel.org/stable/c/bf02d9fe00632d22fa91d34749c7aacf397b6cde
- git.kernel.org/stable/c/c31baa07f01307b7ae05f3ce32b89d8e2ba0cc1d
- git.kernel.org/stable/c/fdfbf54d128ab6ab255db138488f9650485795a2
- lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- cert-portal.siemens.com/productcert/html/ssa-265688.html
- cert-portal.siemens.com/productcert/html/ssa-613116.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.