CVE-2024-50262: bpf: Fix out-of-bounds write in trie_get_next_key()
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.27% (FIRST EPSS).
- 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.
- Fixed version: Linux Linux 13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21, 590976f921723d53ac199c01d5b7b73a94875e68, 86c8ebe02d8806dd8878d0063e8e185622ab6ea6; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1.
Low priority for now. Upgrade to Linux Linux 13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21, 590976f921723d53ac199c01d5b7b73a94875e68, 86c8ebe02d8806dd8878d0063e8e185622ab6ea6; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix out-of-bounds write in trie_get_next_key() trie_get_next_key() allocates a node stack with size trie->max_prefixlen, while it writes (trie->max_prefixlen + 1) nodes to the stack when it has full paths from the root to leaves. For example, consider a trie with max_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ... 0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with .prefixlen = 8 make 9 nodes be written on the node stack with size 8.
- Published
- Nov 9, 2024
- Updated
- Oct 15, 2026
- EPSS
- 0.2% · 18th percentile
- CWE
- CWE-787
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
- 7.8
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| 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 kernel4.16 and later · before 4.19.323
- linux linux kernel4.20 and later · before 5.4.285
- linux linux kernel5.5 and later · before 5.10.229
- linux linux kernel5.11 and later · before 5.15.171
- linux linux kernel5.16 and later · before 6.1.116
- linux linux kernel6.2 and later · before 6.6.60
- linux linux kernel6.7 and later · before 6.11.7
- 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
- 4.16affected
- b471f2f1de8b816f1e799b80aa92588f3566e4bd and later · before e8494ac079814a53fbc2258d2743e720907488edaffected · git
- b471f2f1de8b816f1e799b80aa92588f3566e4bd and later · before 91afbc0eb3c90258ae378ae3c6ead3d2371e926daffected · git
- b471f2f1de8b816f1e799b80aa92588f3566e4bd and later · before 590976f921723d53ac199c01d5b7b73a94875e68affected · git
- b471f2f1de8b816f1e799b80aa92588f3566e4bd and later · before 86c8ebe02d8806dd8878d0063e8e185622ab6ea6affected · git
- b471f2f1de8b816f1e799b80aa92588f3566e4bd and later · before a035df0b98df424559fd383e8e1a268f422ea2baaffected · git
- b471f2f1de8b816f1e799b80aa92588f3566e4bd and later · before 90a6e0e1e151ef7a9282e78f54c3091de2dcc99caffected · git
- b471f2f1de8b816f1e799b80aa92588f3566e4bd and later · before c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980affected · git
- b471f2f1de8b816f1e799b80aa92588f3566e4bd and later · before 13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21affected · git
- before 4.16not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:9 | bpftool | before 7.4.0-503.19.1.el9_5 | 7.4.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-core | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-debug | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-debug-core | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-debug-devel | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-debug-modules | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-devel | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-devel-matched | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-modules | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-modules-core | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-64k-modules-extra | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-abi-stablelists | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-core | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-cross-headers | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-debug | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-debug-core | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-debug-devel | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-debug-devel-matched | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
| AlmaLinux:9 | kernel-debug-modules | before 5.14.0-503.19.1.el9_5 | 5.14.0-503.19.1.el9_5 |
+96
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- 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
Published before and after this one in the same product
- ← EarlierCVE-2024-50261Nov 9, 2024 · macsec: Fix use-after-free while sending the offloading packet31Monitor
- ← EarlierCVE-2024-50251Nov 9, 2024 · netfilter: nft_payload: sanitize offset and length before calling skb_checksum()24Monitor
- Later →CVE-2024-50263Nov 11, 2024 · fork: only invoke khugepaged, ksm hooks if no error22Monitor
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 | 13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21 | Vendor (CNA) |
| Linux Linux | 590976f921723d53ac199c01d5b7b73a94875e68 | Vendor (CNA) |
| Linux Linux | 86c8ebe02d8806dd8878d0063e8e185622ab6ea6 | Vendor (CNA) |
| Linux Linux | 90a6e0e1e151ef7a9282e78f54c3091de2dcc99c | Vendor (CNA) |
| Linux Linux | 91afbc0eb3c90258ae378ae3c6ead3d2371e926d | Vendor (CNA) |
| Linux Linux | a035df0b98df424559fd383e8e1a268f422ea2ba | Vendor (CNA) |
| Linux Linux | c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980 | Vendor (CNA) |
| Linux Linux | e8494ac079814a53fbc2258d2743e720907488ed | 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 5.15.167.1-2 on CBL Mariner 2.0 | 5.15.173.1-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 kernel 5.15.167.1-2 on CBL-Mariner 2.0 | 5.15.173.1-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 kernel 5.15.173.1-1 on CBL Mariner 2.0 | 5.15.173.1-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| almalinux:bpftool | 7.4.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-core | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-core | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel-matched | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-core | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-extra | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-devel | 5.14.0-503.19.1.el9_5 · AlmaLinux:9 | Package registry (OSV) |
| debian:linux | 6.1.119-1 · Debian:12 | Package registry (OSV) |
| red hat:bpftool-debuginfo | 0:7.3.0-427.48.1.el9_4 · Red Hat:rhel_eus:9.4::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-debuginfo | 0:5.14.0-427.48.1.el9_4 · Red Hat:rhel_eus:9.4::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel | 0:5.14.0-427.48.1.el9_4 · Red Hat:rhel_eus:9.4::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel-matched | 0:5.14.0-427.48.1.el9_4 · Red Hat:rhel_eus:9.4::appstream | Package registry (OSV) |
+8
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
- 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-787 · Out-of-bounds WriteCVSS 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
Show all references (12 more)Show less
- git.kernel.org/stable/c/590976f921723d53ac199c01d5b7b73a94875e68
- git.kernel.org/stable/c/86c8ebe02d8806dd8878d0063e8e185622ab6ea6
- git.kernel.org/stable/c/90a6e0e1e151ef7a9282e78f54c3091de2dcc99c
- git.kernel.org/stable/c/91afbc0eb3c90258ae378ae3c6ead3d2371e926d
- git.kernel.org/stable/c/a035df0b98df424559fd383e8e1a268f422ea2ba
- git.kernel.org/stable/c/c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980
- git.kernel.org/stable/c/e8494ac079814a53fbc2258d2743e720907488ed
- 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
- cert-portal.siemens.com/productcert/html/ssa-398330.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.