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NVD / CVE Program· CNA Linux

CVE-2024-50163: bpf: Make sure internal and UAPI bpf_redirect flags don't overlap

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.21% (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 09d88791c7cd888d5195c84733caf9183dcfbd16, 0fca5ed4be8e8bfbfb9bd97845af596bab7192d3, 314dbee9fe4f5cee36435465de52c988d7caa466; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 09d88791c7cd888d5195c84733caf9183dcfbd16, 0fca5ed4be8e8bfbfb9bd97845af596bab7192d3, 314dbee9fe4f5cee36435465de52c988d7caa466; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1 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: Make sure internal and UAPI bpf_redirect flags don't overlap The bpf_redirect_info is shared between the SKB and XDP redirect paths, and the two paths use the same numeric flag values in the ri->flags field (specifically, BPF_F_BROADCAST == BPF_F_NEXTHOP). This means that if skb bpf_redirect_neigh() is used with a non-NULL params argument and, subsequently, an XDP redirect is performed using the same bpf_redirect_info struct, the XDP path will get confused and end up crashing, which syzbot managed to trigger. With the stack-allocated bpf_redirect_info, the structure is no longer shared between the SKB and XDP paths, so the crash doesn't happen anymore. However, different code paths using identically-numbered flag values in the same struct field still seems like a bit of a mess, so this patch cleans that up by moving the flag definitions together and redefining the three flags in BPF_F_REDIRECT_INTERNAL to not overlap with the flags used for XDP. It also adds a BUILD_BUG_ON() check to make sure the overlap is not re-introduced by mistake.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Nov 7, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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

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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.

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Affected 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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.14 and later · before 5.15.170
  • linux linux kernel5.16 and later · before 6.1.115
  • linux linux kernel6.2 and later · before 6.6.59
  • linux linux kernel6.7 and later · before 6.11.6
  • linux linux kernel6.12

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

    • 5.14affected
    • e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before 4e1e428533845d48828bd3875c0e92e8565b9962affected · git
    • e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before 314dbee9fe4f5cee36435465de52c988d7caa466affected · git
    • e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before 0fca5ed4be8e8bfbfb9bd97845af596bab7192d3affected · git
    • e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before cec288e05ceac9a0d3a3a1fd279534b11844c826affected · git
    • e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before 09d88791c7cd888d5195c84733caf9183dcfbd16affected · git
    • before 5.14not affected · semver
    • 5.15.170 and later · up to and including 5.15.*not affected · semver
    • 6.1.115 and later · up to and including 6.1.*not affected · semver
    • 6.6.59 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.115-16.1.115-1
Debian:13linuxbefore 6.11.6-16.11.6-1
openSUSE:Leap 15.6dtb-aarch64before 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-64kbbefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-azurebefore 6.4.0-150600.8.37.16.4.0-150600.8.37.1
openSUSE:Leap 15.6kernel-debugbefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-defaultbefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-default-basebefore 6.4.0-150600.23.50.1.150600.12.22.16.4.0-150600.23.50.1.150600.12.22.1
openSUSE:Leap 15.6kernel-docsbefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-kvmsmallbefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-obs-buildbefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-obs-qabefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-rtbefore 6.4.0-150600.10.39.16.4.0-150600.10.39.1
openSUSE:Leap 15.6kernel-rt_debugbefore 6.4.0-150600.10.39.16.4.0-150600.10.39.1
openSUSE:Leap 15.6kernel-sourcebefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-source-azurebefore 6.4.0-150600.8.37.16.4.0-150600.8.37.1
openSUSE:Leap 15.6kernel-source-rtbefore 6.4.0-150600.10.39.16.4.0-150600.10.39.1
openSUSE:Leap 15.6kernel-symsbefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
openSUSE:Leap 15.6kernel-syms-azurebefore 6.4.0-150600.8.37.16.4.0-150600.8.37.1
openSUSE:Leap 15.6kernel-syms-rtbefore 6.4.0-150600.10.39.16.4.0-150600.10.39.1
openSUSE:Leap 15.6kernel-zfcpdumpbefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_11before 1-150600.13.3.11-150600.13.3.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6-RT_Update_11before 1-150600.1.3.21-150600.1.3.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-64kbbefore 6.4.0-150600.23.50.16.4.0-150600.23.50.1

+22

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • 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 KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-50161Nov 7, 2024 · bpf: Check the remaining info_cnt before repeating btf fields
    22Monitor
  • ← EarlierCVE-2024-50162Nov 7, 2024 · bpf: devmap: provide rxq after redirect
    22Monitor
  • Later →CVE-2024-50165Nov 7, 2024 · bpf: Preserve param->string when parsing mount options
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux09d88791c7cd888d5195c84733caf9183dcfbd16Vendor (CNA)
Linux Linux0fca5ed4be8e8bfbfb9bd97845af596bab7192d3Vendor (CNA)
Linux Linux314dbee9fe4f5cee36435465de52c988d7caa466Vendor (CNA)
Linux Linux4e1e428533845d48828bd3875c0e92e8565b9962Vendor (CNA)
Linux Linuxcec288e05ceac9a0d3a3a1fd279534b11844c826Vendor (CNA)
azl3 kernel 6.6.57.1-7 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.64.2-1 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.167.1-2 on CBL Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.167.1-2 on CBL-Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-1 on CBL Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.115-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.50.1.150600.12.22.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-kvmsmall6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-build6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-qa6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-zfcpdump6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
suse:kernel-64kb6.4.0-150600.23.50.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-azure6.4.0-150600.8.37.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150600.23.50.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default-base6.4.0-150600.23.50.1.150600.12.22.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-docs6.4.0-150600.23.50.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_111-150600.13.3.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-obs-build6.4.0-150600.23.50.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)

+5

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 researchers

Finders, 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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records