bpf: Fix out-of-bounds write in trie_get_next_key()
Priority LOW 36CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 10 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0027 19th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.323, 5.4.285, 5.10.229 +5Red Hat: 2 advisoriesRed Hat: 10 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.16 and later | 4.19.323, 5.4.285, 5.10.229, 5.15.171, 6.1.116, 6.6.60, 6.11.7, 6.12 | Patch available | CNA |
- Linux VendorLinux Affected 4.16 and later Fixed in 4.19.323, 5.4.285, 5.10.229, 5.15.171, 6.1.116, 6.6.60, 6.11.7, 6.12 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.16 to before 4.19.323; 4.20 to before 5.4.285; 5.5 to before 5.10.229; 5.11 to before 5.15.171; 5.16 to before 6.1.116; 6.2 to before 6.6.60; 6.7 to before 6.11.7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* | 6.12 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* | 6.12 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* | 6.12 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* | 6.12 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:* | 6.12 rc5 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.16 to before 4.19.323; 4.20 to before 5.4.285; 5.5 to before 5.10.229; 5.11 to before 5.15.171; 5.16 to before 6.1.116; 6.2 to before 6.6.60; 6.7 to before 6.11.7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* Versions 6.12 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* Versions 6.12 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* Versions 6.12 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* Versions 6.12 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:* Versions 6.12 rc5 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.323, 5.4.285, 5.10.229, 5.15.171, 6.1.116, 6.6.60, 6.11.7, 6.12
Red Hat 2 advisories
- RHSA-2024:11486 Released 2024-12-19 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-503.19.1.el9_5, libperf-5.14.0-503.19.1.el9_5
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.19.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.19.1.el9_5, kernel-64k-devel-5.14.0-503.19.1.el9_5 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.19.1.el9_5, kernel-5.14.0-503.19.1.el9_5, kernel-64k-5.14.0-503.19.1.el9_5 +30
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.19.1.el9_5, kernel-rt-core-5.14.0-503.19.1.el9_5, kernel-rt-debug-5.14.0-503.19.1.el9_5 +9
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.19.1.el9_5, kernel-rt-core-5.14.0-503.19.1.el9_5, kernel-rt-debug-5.14.0-503.19.1.el9_5 +11
- RHSA-2024:10942 Released 2024-12-11 · Red Hat rating Moderatekernel:5.14.0 security update
- Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.48.1.el9_4, libperf-5.14.0-427.48.1.el9_4
- Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.48.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.48.1.el9_4, kernel-64k-devel-5.14.0-427.48.1.el9_4 +10
- Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.48.1.el9_4, kernel-5.14.0-427.48.1.el9_4, kernel-64k-5.14.0-427.48.1.el9_4 +29
- Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.48.1.el9_4, kernel-rt-core-5.14.0-427.48.1.el9_4, kernel-rt-debug-5.14.0-427.48.1.el9_4 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.48.1.el9_4, kernel-rt-core-5.14.0-427.48.1.el9_4, kernel-rt-debug-5.14.0-427.48.1.el9_4 +11
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:11486 |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2024:10942 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:11486 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2024:10942 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:11486 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2024:10942 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2024:11486 |
| Red Hat Enterprise Linux Real Time EUS (v.9.4) | Fixed | RHSA-2024:10942 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2024:11486 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) | Fixed | RHSA-2024:10942 |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux AppStream EUS (v.9.4)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-50262
- 2026-10-03 Alias added: GHSA-m4m9-v4mx-256j
- 2026-10-29 Affected versions changed · Red Hat
References
Patch 8
- https://git.kernel.org/stable/c/e8494ac079814a53fbc2258d2743e720907488ed
- https://git.kernel.org/stable/c/91afbc0eb3c90258ae378ae3c6ead3d2371e926d
- https://git.kernel.org/stable/c/590976f921723d53ac199c01d5b7b73a94875e68
- https://git.kernel.org/stable/c/86c8ebe02d8806dd8878d0063e8e185622ab6ea6
- https://git.kernel.org/stable/c/a035df0b98df424559fd383e8e1a268f422ea2ba
- https://git.kernel.org/stable/c/90a6e0e1e151ef7a9282e78f54c3091de2dcc99c
- https://git.kernel.org/stable/c/c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980
- https://git.kernel.org/stable/c/13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-50262 · CVE Program
- CVE-2024-50262 · NVD
- FIRST EPSS
- GHSA-m4m9-v4mx-256j · GitHub Advisory Database · CC BY 4.0
- CVE-2024-50262 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences