xfrm: validate new SA's prefixlen using SA family when sel.family is unset
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 14 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: xfrm: validate new SA's prefixlen using SA family when sel.family is unset This expands the validation introduced in commit 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.") syzbot created an SA with usersa.sel.family = AF_UNSPEC usersa.sel.prefixlen_s = 128 usersa.family = AF_INET Because of the AF_UNSPEC selector, verify_newsa_info doesn't put limits on prefixlen_{s,d}. But then copy_from_user_state sets x->sel.family to usersa.family (AF_INET). Do the same conversion in verify_newsa_info before validating prefixlen_{s,d}, since that's how prefixlen is going to be used later on.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00259 17th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.323, 5.4.285, 5.10.229 +5Red Hat: 4 advisoriesRed Hat: 14 fixed, 2 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 | 2.6.12 and later | 4.19.323, 5.4.285, 5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6, 6.12 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.12 and later Fixed in 4.19.323, 5.4.285, 5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6, 6.12 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 2.6.12 to before 4.19.323; 4.20 to before 5.4.285; 5.5 to before 5.10.229; 5.11 to before 5.15.170; 5.16 to before 6.1.115; 6.2 to before 6.6.59; 6.7 to before 6.11.6 | 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:*:*:*:*:*:*:*:* Versions 2.6.12 to before 4.19.323; 4.20 to before 5.4.285; 5.5 to before 5.10.229; 5.11 to before 5.15.170; 5.16 to before 6.1.115; 6.2 to before 6.6.59; 6.7 to before 6.11.6 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
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.323, 5.4.285, 5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6, 6.12
Red Hat 4 advisories
- RHSA-2025:1658 Released 2025-02-19 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.55.1.el9_4, libperf-5.14.0-427.55.1.el9_4
- Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.55.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.55.1.el9_4, kernel-64k-devel-5.14.0-427.55.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.55.1.el9_4, kernel-5.14.0-427.55.1.el9_4, kernel-64k-5.14.0-427.55.1.el9_4 +29
- Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.55.1.el9_4, kernel-rt-core-5.14.0-427.55.1.el9_4, kernel-rt-debug-5.14.0-427.55.1.el9_4 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.55.1.el9_4, kernel-rt-core-5.14.0-427.55.1.el9_4, kernel-rt-debug-5.14.0-427.55.1.el9_4 +11
- 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-2024:10943 Released 2024-12-11 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.32.1.el8_10, kernel-4.18.0-553.32.1.el8_10, kernel-abi-stablelists-4.18.0-553.32.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.32.1.el8_10
Show 1 more Red Hat advisories
- RHSA-2024:10944 Released 2024-12-11 · Red Hat rating Moderatekernel-rt security update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-core-4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-4.18.0-553.32.1.rt7.373.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-core-4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-4.18.0-553.32.1.rt7.373.el8_10 +7
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 CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:11486 |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2025:1658 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:11486 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2025:1658 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:10943 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:11486 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2025:1658 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:10943 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:10944 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:10944 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2024:11486 |
| Red Hat Enterprise Linux Real Time EUS (v.9.4) | Fixed | RHSA-2025:1658 |
| 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-2025:1658 |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-50142
- 2026-10-03 Alias added: GHSA-35cx-v8jm-4qrv
- 2026-10-29 Affected versions changed · Red Hat
References
Patch 8
- https://git.kernel.org/stable/c/f31398570acf0f0804c644006f7bfa9067106b0a
- https://git.kernel.org/stable/c/401ad99a5ae7180dd9449eac104cb755f442e7f3
- https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73
- https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71
- https://git.kernel.org/stable/c/bce1afaa212ec380bf971614f70909a27882b862
- https://git.kernel.org/stable/c/7d9868180bd1e4cf37e7c5067362658971162366
- https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4a
- https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563
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Sources
- CVE-2024-50142 · CVE Program
- CVE-2024-50142 · NVD
- FIRST EPSS
- GHSA-35cx-v8jm-4qrv · GitHub Advisory Database · CC BY 4.0
- CVE-2024-50142 · Red Hat security data · CC BY 4.0
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