net/mlx5: Properly link new fs rules into the tree
Priority MEDIUM 48CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Partial Red Hat: 19 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Properly link new fs rules into the tree Previously, add_rule_fg would only add newly created rules from the handle into the tree when they had a refcount of 1. On the other hand, create_flow_handle tries hard to find and reference already existing identical rules instead of creating new ones. These two behaviors can result in a situation where create_flow_handle 1) creates a new rule and references it, then 2) in a subsequent step during the same handle creation references it again, resulting in a rule with a refcount of 2 that is not linked into the tree, will have a NULL parent and root and will result in a crash when the flow group is deleted because del_sw_hw_rule, invoked on rule deletion, assumes node->parent is != NULL. This happened in the wild, due to another bug related to incorrect handling of duplicate pkt_reformat ids, which lead to the code in create_flow_handle incorrectly referencing a just-added rule in the same flow handle, resulting in the problem described above. Full details are at [1]. This patch changes add_rule_fg to add new rules without parents into the tree, properly initializing them and avoiding the crash. This makes it more consistent with how rules are added to an FTE in create_flow_handle.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01413 72nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.313, 5.4.275, 5.10.216 +5Red Hat: 7 advisoriesRed Hat: 19 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
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 | 4.10 and later | 4.19.313, 5.4.275, 5.10.216, 5.15.156, 6.1.87, 6.6.28, 6.8.7, 6.9 | Patch available | CNA |
- Linux VendorLinux Affected 4.10 and later Fixed in 4.19.313, 5.4.275, 5.10.216, 5.15.156, 6.1.87, 6.6.28, 6.8.7, 6.9 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.10 to before 4.19.313; 4.20 to before 5.4.275; 5.5 to before 5.10.216; 5.11 to before 5.15.156; 5.16 to before 6.1.87; 6.2 to before 6.6.28; 6.7 to before 6.8.7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* | 6.9 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* | 6.9 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* | 6.9 rc3 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.10 to before 4.19.313; 4.20 to before 5.4.275; 5.5 to before 5.10.216; 5.11 to before 5.15.156; 5.16 to before 6.1.87; 6.2 to before 6.6.28; 6.7 to before 6.8.7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* Versions 6.9 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* Versions 6.9 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* Versions 6.9 rc3 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.313, 5.4.275, 5.10.216, 5.15.156, 6.1.87, 6.6.28, 6.8.7, 6.9
Red Hat 7 advisories
- RHSA-2024:4902 Released 2024-07-29 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.113.1.el8_6, kernel-4.18.0-372.113.1.el8_6, kernel-abi-stablelists-4.18.0-372.113.1.el8_6 +14
- Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.113.1.el8_6, kernel-4.18.0-372.113.1.el8_6, kernel-abi-stablelists-4.18.0-372.113.1.el8_6 +19
- Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.113.1.el8_6, kernel-4.18.0-372.113.1.el8_6, kernel-abi-stablelists-4.18.0-372.113.1.el8_6 +14
- RHSA-2024:4740 Released 2024-07-23 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.64.1.el8_8
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.64.1.el8_8, kernel-4.18.0-477.64.1.el8_8, kernel-abi-stablelists-4.18.0-477.64.1.el8_8 +19
- RHSA-2024:4349 Released 2024-07-08 · Red Hat rating Moderatekernel security and bug fix update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.24.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.24.1.el9_4, kernel-64k-devel-5.14.0-427.24.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.24.1.el9_4, kernel-5.14.0-427.24.1.el9_4, kernel-64k-5.14.0-427.24.1.el9_4 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.24.1.el9_4, libperf-5.14.0-427.24.1.el9_4
- Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.24.1.el9_4, kernel-rt-core-5.14.0-427.24.1.el9_4, kernel-rt-debug-5.14.0-427.24.1.el9_4 +11
- Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.24.1.el9_4, kernel-rt-core-5.14.0-427.24.1.el9_4, kernel-rt-debug-5.14.0-427.24.1.el9_4 +9
Show 4 more Red Hat advisories
- RHSA-2024:4352 Released 2024-07-08 · Red Hat rating Importantkernel-rt security and bug fix update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-4.18.0-553.8.1.rt7.349.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-4.18.0-553.8.1.rt7.349.el8_10 +7
- RHSA-2024:4211 Released 2024-07-02 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.8.1.el8_10, kernel-4.18.0-553.8.1.el8_10, kernel-abi-stablelists-4.18.0-553.8.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.8.1.el8_10
- RHSA-2024:4108 Released 2024-06-26 · Red Hat rating Importantkernel security and bug fix update
- Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.71.1.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.71.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.71.1.el9_2, kernel-64k-devel-5.14.0-284.71.1.el9_2 +10
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.71.1.el9_2, kernel-5.14.0-284.71.1.el9_2, kernel-64k-5.14.0-284.71.1.el9_2 +29
- RHSA-2024:4106 Released 2024-06-26 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.71.1.rt14.356.el9_2, kernel-rt-core-5.14.0-284.71.1.rt14.356.el9_2, kernel-rt-debug-5.14.0-284.71.1.rt14.356.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.71.1.rt14.356.el9_2, kernel-rt-core-5.14.0-284.71.1.rt14.356.el9_2, kernel-rt-debug-5.14.0-284.71.1.rt14.356.el9_2 +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 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder EUS (v.8.8) | Fixed | RHSA-2024:4740 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:4108 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:4349 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:4108 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:4211 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:4349 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2024:4902 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.6) | Fixed | RHSA-2024:4902 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2024:4740 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:4108 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.6) | Fixed | RHSA-2024:4902 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:4211 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:4349 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:4352 |
| Red Hat Enterprise Linux NFV (v. 9) | Fixed | RHSA-2024:4349 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:4352 |
| Red Hat Enterprise Linux RT (v. 9) | Fixed | RHSA-2024:4349 |
| Red Hat Enterprise Linux Real Time EUS (v.9.2) | Fixed | RHSA-2024:4106 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) | Fixed | RHSA-2024:4106 |
Not affected: 2 products
- Red Hat Enterprise Linux AppStream EUS (v.9.2)
- Red Hat Enterprise Linux BaseOS (v. 8)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-35960
- 2026-10-03 Alias added: GHSA-hgw6-479w-27jj
References
Patch 8
- https://git.kernel.org/stable/c/de0139719cdda82806a47580ca0df06fc85e0bd2
- https://git.kernel.org/stable/c/1263b0b26077b1183c3c45a0a2479573a351d423
- https://git.kernel.org/stable/c/3d90ca9145f6b97b38d0c2b6b30f6ca6af9c1801
- https://git.kernel.org/stable/c/7aaee12b804c5e0374e7b132b6ec2158ff33dd64
- https://git.kernel.org/stable/c/2e8dc5cffc844dacfa79f056dea88002312f253f
- https://git.kernel.org/stable/c/5cf5337ef701830f173b4eec00a4f984adeb57a0
- https://git.kernel.org/stable/c/adf67a03af39095f05d82050f15813d6f700159d
- https://git.kernel.org/stable/c/7c6782ad4911cbee874e85630226ed389ff2e453
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- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
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- 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-2024-35960 · CVE Program
- CVE-2024-35960 · NVD
- FIRST EPSS
- GHSA-hgw6-479w-27jj · GitHub Advisory Database · CC BY 4.0
- CVE-2024-35960 · Red Hat security data · CC BY 4.0
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