ALSA: usb-audio: Fix out of bounds reads when finding clock sources
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out of bounds reads when finding clock sources The current USB-audio driver code doesn't check bLength of each descriptor at traversing for clock descriptors. That is, when a device provides a bogus descriptor with a shorter bLength, the driver might hit out-of-bounds reads. For addressing it, this patch adds sanity checks to the validator functions for the clock descriptor traversal. When the descriptor length is shorter than expected, it's skipped in the loop. For the clock source and clock multiplier descriptors, we can just check bLength against the sizeof() of each descriptor type. OTOH, the clock selector descriptor of UAC2 and UAC3 has an array of bNrInPins elements and two more fields at its tail, hence those have to be checked in addition to the sizeof() check.
- Published
- Dec 24, 2024
- Updated
- Jun 17, 2026
- EPSS
- 1.4% · 70th percentile
- CWE
- CWE-125
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Report tools
Action score
58
Plan
Add it to your regular patch cycle.
- CVSS
- 28 / 40 · 7.1 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 0 / 30 · 1.4%
CISA SSVC decision
- Exploitation
- active
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on Apr 9, 2025. That signals real attacks, not theory.
Remediation deadline for government agencies: Apr 30, 2025.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux11.0
- linux linux kernelbefore 5.4.287
- linux linux kernel5.5 and later · before 5.10.231
- linux linux kernel5.11 and later · before 5.15.174
- linux linux kernel5.16 and later · before 6.1.120
- linux linux kernel6.2 and later · before 6.6.64
- linux linux kernel6.7 and later · before 6.11.11
- linux linux kernel6.12 and later · before 6.12.2
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
- 9feeaa50e5b4b0b71259d918a36ecf9059e60796, 3b17a13b687ae99939dc94a4ae01fbc34f68decc, 5.4affected
- b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a and later · before a632bdcb359fd8145e86486ff8612da98e239acdaffected · git
- b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a and later · before 45a92cbc88e4013bfed7fd2ccab3ade45f8e896baffected · git
- b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a and later · before ab011f7439d9bbfd34fd3b9cef4b2d6d952c9bb9affected · git
- b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a and later · before da13ade87a12dd58829278bc816a61bea06a56a9affected · git
- b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a and later · before 74cb86e1006c5437b1d90084d22018da30fddc77affected · git
- b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a and later · before ea0fa76f61cf8e932d1d26e6193513230816e11daffected · git
- b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a and later · before 096bb5b43edf755bc4477e64004fa3a20539ec2faffected · git
- b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a and later · before a3dd4d63eeb452cfb064a13862fb376ab108f6a6affected · git
- 4.19.84 and later · before 4.20affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | bpftool | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-abi-stablelists | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-core | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-cross-headers | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-debug | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-debug-core | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-debug-devel | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules-extra | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-devel | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-doc | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-headers | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-modules | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-modules-extra | before 4.18.0-553.50.1.el8_10 | 4.18.0-553.50.1.el8_10 |
| AlmaLinux:8 | kernel-rt | before 4.18.0-553.50.1.rt7.391.el8_10 | 4.18.0-553.50.1.rt7.391.el8_10 |
| AlmaLinux:8 | kernel-rt-core | before 4.18.0-553.50.1.rt7.391.el8_10 | 4.18.0-553.50.1.rt7.391.el8_10 |
| AlmaLinux:8 | kernel-rt-debug | before 4.18.0-553.50.1.rt7.391.el8_10 | 4.18.0-553.50.1.rt7.391.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-core | before 4.18.0-553.50.1.rt7.391.el8_10 | 4.18.0-553.50.1.rt7.391.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-devel | before 4.18.0-553.50.1.rt7.391.el8_10 | 4.18.0-553.50.1.rt7.391.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-modules | before 4.18.0-553.50.1.rt7.391.el8_10 | 4.18.0-553.50.1.rt7.391.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | before 4.18.0-553.50.1.rt7.391.el8_10 | 4.18.0-553.50.1.rt7.391.el8_10 |
| AlmaLinux:8 | kernel-rt-devel | before 4.18.0-553.50.1.rt7.391.el8_10 | 4.18.0-553.50.1.rt7.391.el8_10 |
| AlmaLinux:8 | kernel-rt-modules | before 4.18.0-553.50.1.rt7.391.el8_10 | 4.18.0-553.50.1.rt7.391.el8_10 |
+96
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- 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
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
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 | 096bb5b43edf755bc4477e64004fa3a20539ec2f | Vendor (CNA) |
| Linux Linux | 4.20 | Vendor (CNA) |
| Linux Linux | 45a92cbc88e4013bfed7fd2ccab3ade45f8e896b | Vendor (CNA) |
| Linux Linux | 5.4 | Vendor (CNA) |
| Linux Linux | 74cb86e1006c5437b1d90084d22018da30fddc77 | Vendor (CNA) |
| Linux Linux | a3dd4d63eeb452cfb064a13862fb376ab108f6a6 | Vendor (CNA) |
| Linux Linux | a632bdcb359fd8145e86486ff8612da98e239acd | Vendor (CNA) |
| Linux Linux | ab011f7439d9bbfd34fd3b9cef4b2d6d952c9bb9 | Vendor (CNA) |
| Linux Linux | da13ade87a12dd58829278bc816a61bea06a56a9 | Vendor (CNA) |
| Linux Linux | ea0fa76f61cf8e932d1d26e6193513230816e11d | Vendor (CNA) |
| AlmaLinux:bpftool | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-abi-stablelists | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-core | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-cross-headers | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-debug | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-debug-core | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-debug-devel | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-debug-modules | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-debug-modules-extra | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-devel | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| AlmaLinux:kernel-doc | 4.18.0-553.50.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| Debian:linux | 6.1.123-1 · Debian:12 | Package registry (OSV) |
| Red Hat:bpftool | 0:4.18.0-372.143.1.el8_6 · Red Hat:rhel_aus:8.6::baseos | Package registry (OSV) |
| Red Hat:bpftool-debuginfo | 0:4.18.0-372.143.1.el8_6 · Red Hat:rhel_aus:8.6::baseos | Package registry (OSV) |
| Red Hat:kernel | 0:4.18.0-372.143.1.el8_6 · Red Hat:rhel_aus:8.6::baseos | Package registry (OSV) |
| Red Hat:kernel-abi-stablelists | 0:4.18.0-372.143.1.el8_6 · Red Hat:rhel_aus:8.6::baseos | Package registry (OSV) |
| Red Hat:kernel-core | 0:4.18.0-372.143.1.el8_6 · Red Hat:rhel_aus:8.6::baseos | Package registry (OSV) |
| Red Hat:kernel-debug | 0:4.18.0-372.143.1.el8_6 · Red Hat:rhel_aus:8.6::baseos | Package registry (OSV) |
| Red Hat:kernel-debug-core | 0:4.18.0-372.143.1.el8_6 · Red Hat:rhel_aus:8.6::baseos | Package registry (OSV) |
+7
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
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.
- Published
- CISA KEV+106 d
- TodaySep 29, 2026+645 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
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
- none
- 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
- None
- Availability impact
- High
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/096bb5b43edf755bc4477e64004fa3a20539ec2f
- git.kernel.org/stable/c/45a92cbc88e4013bfed7fd2ccab3ade45f8e896b
- git.kernel.org/stable/c/74cb86e1006c5437b1d90084d22018da30fddc77
- git.kernel.org/stable/c/a3dd4d63eeb452cfb064a13862fb376ab108f6a6
- git.kernel.org/stable/c/a632bdcb359fd8145e86486ff8612da98e239acd
- git.kernel.org/stable/c/ab011f7439d9bbfd34fd3b9cef4b2d6d952c9bb9
- git.kernel.org/stable/c/da13ade87a12dd58829278bc816a61bea06a56a9
- git.kernel.org/stable/c/ea0fa76f61cf8e932d1d26e6193513230816e11d
- lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-53150
Vendor advisories and official records. Exploit/PoC links are deliberately left out.