CVE-2023-52464: EDAC/thunderx: Fix possible out-of-bounds string access
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 426fae93c01dffa379225eb2bd4d3cdc42c6eec5, 475c58e1a471e9b873e3e39958c64a2d278275c8, 5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6.
Low priority for now. Upgrade to Linux Linux 426fae93c01dffa379225eb2bd4d3cdc42c6eec5, 475c58e1a471e9b873e3e39958c64a2d278275c8, 5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6 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: EDAC/thunderx: Fix possible out-of-bounds string access Enabling -Wstringop-overflow globally exposes a warning for a common bug in the usage of strncat(): drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr': drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=] 1136 | strncat(msg, other, OCX_MESSAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... 1145 | strncat(msg, other, OCX_MESSAGE_SIZE); ... 1150 | strncat(msg, other, OCX_MESSAGE_SIZE); ... Apparently the author of this driver expected strncat() to behave the way that strlcat() does, which uses the size of the destination buffer as its third argument rather than the length of the source buffer. The result is that there is no check on the size of the allocated buffer. Change it to strlcat(). [ bp: Trim compiler output, fixup commit message. ]
- Published
- Feb 23, 2024
- Updated
- Oct 15, 2026
- EPSS
- 0.2% · 18th percentile
- CWE
- CWE-119
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%
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
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 kernel4.12.0 and later · before 4.19.306
- linux linux kernel4.20.0 and later · before 5.4.268
- linux linux kernel5.5.0 and later · before 5.10.209
- linux linux kernel5.11.0 and later · before 5.15.148
- linux linux kernel5.16.0 and later · before 6.1.75
- linux linux kernel6.2.0 and later · before 6.6.14
- linux linux kernel6.7.0 and later · before 6.7.2
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
- 4.12affected
- 41003396f932d7f027725c7acebb6a7caa41dc3e and later · before 71c17ee02538802ceafc830f0736aa35b564e601affected · git
- 41003396f932d7f027725c7acebb6a7caa41dc3e and later · before 5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6affected · git
- 41003396f932d7f027725c7acebb6a7caa41dc3e and later · before 6aa7865ba7ff7f0ede0035180fb3b9400ceb405aaffected · git
- 41003396f932d7f027725c7acebb6a7caa41dc3e and later · before 700cf4bead80fac994dcc43ae1ca5d86d8959b21affected · git
- 41003396f932d7f027725c7acebb6a7caa41dc3e and later · before 9dbac9fdae6e3b411fc4c3fca3bf48f70609c398affected · git
- 41003396f932d7f027725c7acebb6a7caa41dc3e and later · before e1c86511241588efffaa49556196f09a498d5057affected · git
- 41003396f932d7f027725c7acebb6a7caa41dc3e and later · before 426fae93c01dffa379225eb2bd4d3cdc42c6eec5affected · git
- 41003396f932d7f027725c7acebb6a7caa41dc3e and later · before 475c58e1a471e9b873e3e39958c64a2d278275c8affected · git
- before 4.12not affected · 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 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-abi-stablelists | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-core | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-cross-headers | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-debug | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-debug-core | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-debug-devel | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules-extra | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-devel | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-doc | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-headers | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-modules | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-modules-extra | before 4.18.0-553.8.1.el8_10 | 4.18.0-553.8.1.el8_10 |
| AlmaLinux:8 | kernel-rt | before 4.18.0-553.8.1.rt7.349.el8_10 | 4.18.0-553.8.1.rt7.349.el8_10 |
| AlmaLinux:8 | kernel-rt-core | before 4.18.0-553.8.1.rt7.349.el8_10 | 4.18.0-553.8.1.rt7.349.el8_10 |
| AlmaLinux:8 | kernel-rt-debug | before 4.18.0-553.8.1.rt7.349.el8_10 | 4.18.0-553.8.1.rt7.349.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-core | before 4.18.0-553.8.1.rt7.349.el8_10 | 4.18.0-553.8.1.rt7.349.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-devel | before 4.18.0-553.8.1.rt7.349.el8_10 | 4.18.0-553.8.1.rt7.349.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-kvm | before 4.18.0-553.8.1.rt7.349.el8_10 | 4.18.0-553.8.1.rt7.349.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-modules | before 4.18.0-553.8.1.rt7.349.el8_10 | 4.18.0-553.8.1.rt7.349.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | before 4.18.0-553.8.1.rt7.349.el8_10 | 4.18.0-553.8.1.rt7.349.el8_10 |
| AlmaLinux:8 | kernel-rt-devel | before 4.18.0-553.8.1.rt7.349.el8_10 | 4.18.0-553.8.1.rt7.349.el8_10 |
+96
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-2024-26599Feb 23, 2024 · pwm: Fix out-of-bounds access in of_pwm_single_xlate()31Monitor
- ← EarlierCVE-2023-52458Feb 23, 2024 · block: add check that partition length needs to be aligned with block size22Monitor
- Later →CVE-2021-46904Feb 26, 2024 · net: hso: fix null-ptr-deref during tty device unregistration22Monitor
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 | 426fae93c01dffa379225eb2bd4d3cdc42c6eec5 | Vendor (CNA) |
| Linux Linux | 475c58e1a471e9b873e3e39958c64a2d278275c8 | Vendor (CNA) |
| Linux Linux | 5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6 | Vendor (CNA) |
| Linux Linux | 6aa7865ba7ff7f0ede0035180fb3b9400ceb405a | Vendor (CNA) |
| Linux Linux | 700cf4bead80fac994dcc43ae1ca5d86d8959b21 | Vendor (CNA) |
| Linux Linux | 71c17ee02538802ceafc830f0736aa35b564e601 | Vendor (CNA) |
| Linux Linux | 9dbac9fdae6e3b411fc4c3fca3bf48f70609c398 | Vendor (CNA) |
| Linux Linux | e1c86511241588efffaa49556196f09a498d5057 | Vendor (CNA) |
| almalinux:bpftool | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-abi-stablelists | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-core | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-cross-headers | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-core | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-devel | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-modules | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-modules-extra | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-devel | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-doc | 4.18.0-553.8.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| debian:linux | 6.1.76-1 · Debian:12 | Package registry (OSV) |
| debian:linux-5.10 | 5.10.209-2~deb10u1 · Debian:10 | Package registry (OSV) |
| opensuse:dtb-aarch64 | 5.14.21-150500.55.52.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:kernel-64kb | 5.14.21-150500.55.52.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:kernel-debug | 5.14.21-150500.55.52.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:kernel-default | 5.14.21-150500.55.52.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:kernel-default-base | 5.14.21-150500.55.52.1.150500.6.23.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:kernel-docs | 5.14.21-150500.55.52.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 5.14.21-150500.55.52.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:kernel-obs-build | 5.14.21-150500.55.52.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
+30
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.
- CVE-2023-524402 days apartksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob()38Monitor
- CVE-2021-4734888 days apartdrm/amd/display: Avoid HDCP over-read and corruption36Monitor
- CVE-2022-3640490 days apartLinux Kernel Bluetooth l2cap_core.c l2cap_conn_del use after free35Monitor
- CVE-2023-524343 days apartsmb: client: fix potential OOBs in smb2_parse_contexts()32Monitor
- CVE-2024-265990 days apartpwm: Fix out-of-bounds access in of_pwm_single_xlate()31Monitor
- CVE-2024-265881 days apartLoongArch: BPF: Prevent out-of-bounds memory access31Monitor
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)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS 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.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (10 more)Show less
- git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8
- git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6
- git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405a
- git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21
- git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601
- git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398
- git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057
- lists.debian.org/debian-lts-announce/2024/06/msg00016.html
- lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- cert-portal.siemens.com/productcert/html/ssa-398330.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.