CVE-2022-49975: bpf: Don't redirect packets with invalid pkt_len
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.26% (FIRST EPSS).
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Linux Linux 6204bf78b2a903b96ba43afff6abc0b04d6e0462, 72f2dc8993f10262092745a88cb2dd0fef094f23, 8b68e53d56697a59b5c53893b53f508bbdf272a0.
Low priority for now. Upgrade to Linux Linux 6204bf78b2a903b96ba43afff6abc0b04d6e0462, 72f2dc8993f10262092745a88cb2dd0fef094f23, 8b68e53d56697a59b5c53893b53f508bbdf272a0 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In the Linux kernel, the following vulnerability has been resolved: bpf: Don't redirect packets with invalid pkt_len Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The root cause, as the [2] says, is because that bpf_prog_test_run_skb() run a bpf prog which redirects empty skbs. So we should determine whether the length of the packet modified by bpf prog or others like bpf_prog_test is valid before forwarding it directly.
- Published
- Jun 18, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 18th percentile
- CWE
- —
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernelbefore 5.4.212
- linux linux kernel5.5 and later · before 5.10.141
- linux linux kernel5.11 and later · before 5.15.65
- linux linux kernel5.16 and later · before 5.19.7
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 4.9affected
- 5293efe62df81908f2e90c9820c7edcc8e61f5e9 and later · before 8b68e53d56697a59b5c53893b53f508bbdf272a0affected · git
- 5293efe62df81908f2e90c9820c7edcc8e61f5e9 and later · before 6204bf78b2a903b96ba43afff6abc0b04d6e0462affected · git
- 5293efe62df81908f2e90c9820c7edcc8e61f5e9 and later · before a75987714bd2d8e59840667a28e15c1fa5c47554affected · git
- 5293efe62df81908f2e90c9820c7edcc8e61f5e9 and later · before 72f2dc8993f10262092745a88cb2dd0fef094f23affected · git
- 5293efe62df81908f2e90c9820c7edcc8e61f5e9 and later · before fd1894224407c484f652ad456e1ce423e89bb3ebaffected · git
- before 4.9not affected · semver
- 5.4.212 and later · up to and including 5.4.*not affected · semver
- 5.10.141 and later · up to and including 5.10.*not affected · semver
- 5.15.65 and later · up to and including 5.15.*not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.0.2-1 | 6.0.2-1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kernel-default | before 4.12.14-122.275.1 | 4.12.14-122.275.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kernel-default | before 4.12.14-122.272.1 | 4.12.14-122.272.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kernel-default | before 4.12.14-122.290.1 | 4.12.14-122.290.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_72 | before 1-8.3.1 | 1-8.3.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_73 | before 1-8.3.1 | 1-8.3.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_76 | before 1-8.7.1 | 1-8.7.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-source | before 4.12.14-122.275.1 | 4.12.14-122.275.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-source | before 4.12.14-122.272.1 | 4.12.14-122.272.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-source | before 4.12.14-122.290.1 | 4.12.14-122.290.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-syms | before 4.12.14-122.275.1 | 4.12.14-122.275.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-syms | before 4.12.14-122.290.1 | 4.12.14-122.290.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-syms | before 4.12.14-122.272.1 | 4.12.14-122.272.1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
Published before and after this one in the same product
- ← EarlierCVE-2022-49973Jun 18, 2025 · skmsg: Fix wrong last sg check in sk_msg_recvmsg()22Monitor
- ← EarlierCVE-2022-49974Jun 18, 2025 · HID: nintendo: fix rumble worker null pointer deref22Monitor
- Later →CVE-2022-49976Jun 18, 2025 · platform/x86: x86-android-tablets: Fix broken touchscreen on Chuwi Hi8 with Windows BIOS22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 6204bf78b2a903b96ba43afff6abc0b04d6e0462 | Vendor (CNA) |
| Linux Linux | 72f2dc8993f10262092745a88cb2dd0fef094f23 | Vendor (CNA) |
| Linux Linux | 8b68e53d56697a59b5c53893b53f508bbdf272a0 | Vendor (CNA) |
| Linux Linux | a75987714bd2d8e59840667a28e15c1fa5c47554 | Vendor (CNA) |
| Linux Linux | fd1894224407c484f652ad456e1ce423e89bb3eb | Vendor (CNA) |
| debian:linux | 6.0.2-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-default | 4.12.14-122.272.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | Package registry (OSV) |
| suse:kernel-source | 4.12.14-122.272.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS | Package registry (OSV) |
| suse:kernel-syms | 4.12.14-122.272.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP5_Update_72 | 1-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP5_Update_73 | 1-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP5_Update_76 | 1-8.7.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (4 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.