mm: /proc/pid/smaps_rollup: fix no vma's null-deref
Priority LOW 24CWE-476Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 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: mm: /proc/pid/smaps_rollup: fix no vma's null-deref Commit 258f669e7e88 ("mm: /proc/pid/smaps_rollup: convert to single value seq_file") introduced a null-deref if there are no vma's in the task in show_smaps_rollup.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0016 5th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.264, 5.4.221, 5.10.152 +3Red Hat: 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 | 4.19 and later | 4.19.264, 5.4.221, 5.10.152, 5.15.76, 6.0.6, 6.1 | Patch available | CNA |
- Linux VendorLinux Affected 4.19 and later Fixed in 4.19.264, 5.4.221, 5.10.152, 5.15.76, 6.0.6, 6.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.19 to before 4.19.264; 4.20 to before 5.4.221; 5.5 to before 5.10.152; 5.11 to before 5.15.76; 5.16 to before 6.0.6 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.19 to before 4.19.264; 4.20 to before 5.4.221; 5.5 to before 5.10.152; 5.11 to before 5.15.76; 5.16 to before 6.0.6 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.264, 5.4.221, 5.10.152, 5.15.76, 6.0.6, 6.1
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 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2022-50380
- 2026-10-03 Alias added: GHSA-g7qm-6vv8-chvq
References
Patch 6
- https://git.kernel.org/stable/c/dbe863bce7679c7f5ec0e993d834fe16c5e687b5
- https://git.kernel.org/stable/c/6bb8769326c46db3058780c0640dcc49d8187b24
- https://git.kernel.org/stable/c/a50ed2d28727ff605d95fb9a53be8ff94e8eaaf4
- https://git.kernel.org/stable/c/33fc9e26b7cb39f0d4219c875a2451802249c225
- https://git.kernel.org/stable/c/97898139ca9b81ba9322a585e07490983c53b55a
- https://git.kernel.org/stable/c/c4c84f06285e48f80e9843d0775ad92714ffc35a
More Linux Kernel vulnerabilities
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- 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
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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-2022-50380 · CVE Program
- CVE-2022-50380 · NVD
- FIRST EPSS
- GHSA-g7qm-6vv8-chvq · GitHub Advisory Database · CC BY 4.0
- CVE-2022-50380 · 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