net: fix out-of-bounds access in ops_init
Priority LOW 34CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 18 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: net: fix out-of-bounds access in ops_init net_alloc_generic is called by net_alloc, which is called without any locking. It reads max_gen_ptrs, which is changed under pernet_ops_rwsem. It is read twice, first to allocate an array, then to set s.len, which is later used to limit the bounds of the array access. It is possible that the array is allocated and another thread is registering a new pernet ops, increments max_gen_ptrs, which is then used to set s.len with a larger than allocated length for the variable array. Fix it by reading max_gen_ptrs only once in net_alloc_generic. If max_gen_ptrs is later incremented, it will be caught in net_assign_generic.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00311 24th percentileScored 2026-11-07
Fix Partial Linux (Linux): 3.1, 3.3, 4.19.314 +7Red Hat: 6 advisoriesRed Hat: 18 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- 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 | 3.0.19 to before 3.1; 3.2.3 to before 3.3 | 3.1, 3.3 | Patch available | CNA |
| Linux | Linux | 3.3 and later | 4.19.314, 5.4.276, 5.10.217, 5.15.159, 6.1.91, 6.6.31, 6.8.10, 6.9 | Patch available | CNA |
- Linux VendorLinux Affected 3.0.19 to before 3.1; 3.2.3 to before 3.3 Fixed in 3.1, 3.3 Patch available CNA
- Linux VendorLinux Affected 3.3 and later Fixed in 4.19.314, 5.4.276, 5.10.217, 5.15.159, 6.1.91, 6.6.31, 6.8.10, 6.9 Patch available CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.0.19 to before 3.1; 3.2.3 to before 3.3; 3.3.1 to before 4.19.314; 4.20 to before 5.4.276; 5.5 to before 5.10.217; 5.11 to before 5.15.159; 5.16 to before 6.1.91; 6.2 to before 6.6.31; 6.7 to before 6.8.10 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.3:-:*:*:*:*:*:* | 3.3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.3:rc2:*:*:*:*:*:* | 3.3 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.3:rc3:*:*:*:*:*:* | 3.3 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.3:rc4:*:*:*:*:*:* | 3.3 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.3:rc5:*:*:*:*:*:* | 3.3 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.3:rc6:*:*:*:*:*:* | 3.3 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.3:rc7:*:*:*:*:*:* | 3.3 rc7 | 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:*:*:*:*:*:*:*:* Versions 3.0.19 to before 3.1; 3.2.3 to before 3.3; 3.3.1 to before 4.19.314; 4.20 to before 5.4.276; 5.5 to before 5.10.217; 5.11 to before 5.15.159; 5.16 to before 6.1.91; 6.2 to before 6.6.31; 6.7 to before 6.8.10 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.3:-:*:*:*:*:*:* Versions 3.3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.3:rc2:*:*:*:*:*:* Versions 3.3 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.3:rc3:*:*:*:*:*:* Versions 3.3 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.3:rc4:*:*:*:*:*:* Versions 3.3 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.3:rc5:*:*:*:*:*:* Versions 3.3 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.3:rc6:*:*:*:*:*:* Versions 3.3 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.3:rc7:*:*:*:*:*:* Versions 3.3 rc7 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
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* | 6.9 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:* | 6.9 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:* | 6.9 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:* | 6.9 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.9:rc7:*:*:*:*:*:* | 6.9 rc7 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* Versions 6.9 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:* Versions 6.9 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:* Versions 6.9 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:* Versions 6.9 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.9:rc7:*:*:*:*:*:* Versions 6.9 rc7 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
Remediation
- Fix · CNA Linux (Linux) Fixed in 3.1, 3.3
- Fix · CNA Linux (Linux) Fixed in 4.19.314, 5.4.276, 5.10.217, 5.15.159, 6.1.91, 6.6.31, 6.8.10, 6.9
Red Hat 6 advisories
- RHSA-2024:7000 Released 2024-09-24 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.22.1.el8_10, kernel-4.18.0-553.22.1.el8_10, kernel-abi-stablelists-4.18.0-553.22.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.22.1.el8_10
- RHSA-2024:7001 Released 2024-09-24 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-core-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-debug-4.18.0-553.22.1.rt7.363.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-core-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-debug-4.18.0-553.22.1.rt7.363.el8_10 +7
- RHSA-2024:6567 Released 2024-09-11 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.35.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.35.1.el9_4, kernel-64k-devel-5.14.0-427.35.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.35.1.el9_4, kernel-5.14.0-427.35.1.el9_4, kernel-64k-5.14.0-427.35.1.el9_4 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.35.1.el9_4, libperf-5.14.0-427.35.1.el9_4
- Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.35.1.el9_4, kernel-rt-core-5.14.0-427.35.1.el9_4, kernel-rt-debug-5.14.0-427.35.1.el9_4 +11
- Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.35.1.el9_4, kernel-rt-core-5.14.0-427.35.1.el9_4, kernel-rt-debug-5.14.0-427.35.1.el9_4 +9
Show 3 more Red Hat advisories
- RHSA-2024:6206 Released 2024-09-03 · Red Hat rating Importantkernel security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.70.1.el8_8
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.70.1.el8_8, kernel-4.18.0-477.70.1.el8_8, kernel-abi-stablelists-4.18.0-477.70.1.el8_8 +19
- RHSA-2024:5672 Released 2024-08-21 · Red Hat rating Importantkernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.80.1.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.80.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.80.1.el9_2, kernel-64k-devel-5.14.0-284.80.1.el9_2 +9
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.80.1.el9_2, kernel-5.14.0-284.80.1.el9_2, kernel-64k-5.14.0-284.80.1.el9_2 +29
- RHSA-2024:5673 Released 2024-08-21 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.80.1.rt14.365.el9_2, kernel-rt-core-5.14.0-284.80.1.rt14.365.el9_2, kernel-rt-debug-5.14.0-284.80.1.rt14.365.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.80.1.rt14.365.el9_2, kernel-rt-core-5.14.0-284.80.1.rt14.365.el9_2, kernel-rt-debug-5.14.0-284.80.1.rt14.365.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 |
| RHOAI-2.13-RHEL-8 | Fixed | — |
| RHOAI-2.14-RHEL-8 | Fixed | — |
| Red Hat CodeReady Linux Builder EUS (v.8.8) | Fixed | RHSA-2024:6206 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:5672 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:6567 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:5672 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:7000 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:6567 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2024:6206 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:5672 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:7000 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:6567 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:7001 |
| Red Hat Enterprise Linux NFV (v. 9) | Fixed | RHSA-2024:6567 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:7001 |
| Red Hat Enterprise Linux RT (v. 9) | Fixed | RHSA-2024:6567 |
| Red Hat Enterprise Linux Real Time EUS (v.9.2) | Fixed | RHSA-2024:5673 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) | Fixed | RHSA-2024:5673 |
Not affected: 1 product
- Red Hat Enterprise Linux AppStream EUS (v.9.2)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-36883
- 2026-10-30 Fix available: RHOAI-2.13-RHEL-8, RHOAI-2.14-RHEL-8 · Red Hat
References
Patch 8
- https://git.kernel.org/stable/c/3cdc34d76c4f777579e28ad373979d36c030cfd3
- https://git.kernel.org/stable/c/7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f
- https://git.kernel.org/stable/c/0c3248bc708a7797be573214065cf908ff1f54c7
- https://git.kernel.org/stable/c/9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030
- https://git.kernel.org/stable/c/2d60ff5874aefd006717ca5e22ac1e25eac29c42
- https://git.kernel.org/stable/c/b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd
- https://git.kernel.org/stable/c/f4f94587e1bf87cb40ec33955a9d90148dd026ab
- https://git.kernel.org/stable/c/a26ff37e624d12e28077e5b24d2b264f62764ad6
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Sources
- CVE-2024-36883 · CVE Program
- CVE-2024-36883 · NVD
- FIRST EPSS
- CVE-2024-36883 · Red Hat security data · CC BY 4.0
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