🛡️ CVE-2023-52464 on Ubuntu — linux

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

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. ]

Distribution advisory

This page covers CVE-2023-52464 as tracked by Ubuntu, for the package linux. The fix is available in version 5.15.0-102.112; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack vector: Local — a local account, shell or session on the host is needed.
Attack complexity: Low — the attack works reliably, with no preparation.
Privileges required: Low — an ordinary user account is enough.
User interaction: None — nobody has to be tricked into anything.
Scope: Unchanged — the damage stays inside the vulnerable component.
Confidentiality impact: High — total loss, or loss the attacker controls.
Integrity impact: High — total loss, or loss the attacker controls.
Availability impact: High — total loss, or loss the attacker controls.

Affected software

UBUNTU-CVE-2023-52464 is recorded against 116 packages.

linux (fixed in 5.15.0-102.112)
linux-allwinner-5.19
linux-aws (fixed in 5.15.0-1057.63)
linux-aws-5.0
linux-aws-5.11
linux-aws-5.13
linux-aws-5.15 (fixed in 5.15.0-1057.63~20.04.1)
linux-aws-5.19
linux-aws-5.3
linux-aws-5.4 (fixed in 5.4.0-1122.132~18.04.1)
linux-aws-5.8
linux-aws-6.2
linux-aws-6.5
linux-aws-fips (fixed in 5.15.0-1057.63+fips1)
linux-aws-hwe (fixed in 4.15.0-1167.180~16.04.1)
linux-azure (fixed in 5.15.0-1060.69)
linux-azure-4.15 (fixed in 4.15.0-1176.191)
linux-azure-5.11
linux-azure-5.13
linux-azure-5.15 (fixed in 5.15.0-1060.69~20.04.1)
linux-azure-5.19
linux-azure-5.3
linux-azure-5.4 (fixed in 5.4.0-1127.134~18.04.1)
linux-azure-5.8

Show the remaining 92 packages

linux-azure-6.2
linux-azure-6.5 (fixed in 6.5.0-1022.23~22.04.1)
linux-azure-edge
linux-azure-fde
linux-azure-fde-5.19
linux-azure-fde-6.2
linux-azure-fde-6.8
linux-azure-fips (fixed in 5.15.0-1060.69+fips1)
linux-bluefield
linux-fips (fixed in 5.15.0-102.112+fips1)
linux-gcp (fixed in 5.15.0-1055.63)
linux-gcp-4.15 (fixed in 4.15.0-1161.178)
linux-gcp-5.11
linux-gcp-5.13
linux-gcp-5.15 (fixed in 5.15.0-1055.63~20.04.1)
linux-gcp-5.19
linux-gcp-5.3
linux-gcp-5.4 (fixed in 5.4.0-1126.135~18.04.1)
linux-gcp-5.8
linux-gcp-6.2
linux-gcp-6.5 (fixed in 6.5.0-1022.24~22.04.1)
linux-gcp-fips (fixed in 5.15.0-1055.63+fips2)
linux-gke (fixed in 5.15.0-1054.59)
linux-gke-4.15
linux-gke-5.15
linux-gke-5.4
linux-gkeop (fixed in 5.15.0-1040.46)
linux-gkeop-5.15 (fixed in 5.15.0-1040.46~20.04.1)
linux-gkeop-5.4
linux-hwe
linux-hwe-5.11
linux-hwe-5.13
linux-hwe-5.15 (fixed in 5.15.0-102.112~20.04.1)
linux-hwe-5.19
linux-hwe-5.4 (fixed in 5.4.0-175.195~18.04.1)
linux-hwe-5.8
linux-hwe-6.2
linux-hwe-6.5 (fixed in 6.5.0-41.41~22.04.2)
linux-hwe-edge
linux-ibm (fixed in 5.15.0-1050.53)
linux-ibm-5.15 (fixed in 5.15.0-1050.53~20.04.1)
linux-ibm-5.4 (fixed in 5.4.0-1069.74~18.04.1)
linux-intel-5.13
linux-intel-iot-realtime (fixed in 5.15.0-1050.52)
linux-intel-iotg (fixed in 5.15.0-1052.58)
linux-intel-iotg-5.15 (fixed in 5.15.0-1052.58~20.04.1)
linux-iot (fixed in 5.4.0-1034.35)
linux-kvm (fixed in 5.15.0-1054.59)
linux-lowlatency (fixed in 5.15.0-102.112)
linux-lowlatency-hwe-5.15 (fixed in 5.15.0-102.112~20.04.1)
linux-lowlatency-hwe-5.19
linux-lowlatency-hwe-6.2
linux-lowlatency-hwe-6.5 (fixed in 6.5.0-41.41.1~22.04.1)
linux-nvidia (fixed in 5.15.0-1048.48)
linux-nvidia-6.2
linux-nvidia-6.5 (fixed in 6.5.0-1021.22)
linux-nvidia-tegra (fixed in 5.15.0-1025.25)
linux-nvidia-tegra-5.15 (fixed in 5.15.0-1025.25~20.04.1)
linux-nvidia-tegra-igx (fixed in 5.15.0-1012.12)
linux-oem
linux-oem-5.10
linux-oem-5.13
linux-oem-5.14
linux-oem-5.17
linux-oem-5.6
linux-oem-6.0
linux-oem-6.1 (fixed in 6.1.0-1035.35)
linux-oem-6.5 (fixed in 6.5.0-1024.25)
linux-oracle (fixed in 5.15.0-1055.61)
linux-oracle-5.0
linux-oracle-5.11
linux-oracle-5.13
linux-oracle-5.15 (fixed in 5.15.0-1055.61~20.04.1)
linux-oracle-5.3
linux-oracle-5.4 (fixed in 5.4.0-1121.130~18.04.1)
linux-oracle-5.8
linux-oracle-6.5 (fixed in 6.5.0-1024.24~22.04.1)
linux-raspi (fixed in 5.15.0-1050.53)
linux-raspi-5.4 (fixed in 5.4.0-1106.118~18.04.1)
linux-raspi-realtime (fixed in 6.8.0-2001.1)
linux-raspi2
linux-realtime (fixed in 5.15.0-1058.66)
linux-riscv
linux-riscv-5.11
linux-riscv-5.15 (fixed in 5.15.0-1053.57~20.04.1)
linux-riscv-5.19
linux-riscv-5.8
linux-riscv-6.5 (fixed in 6.5.0-40.40.1~22.04.1)
linux-starfive-5.19
linux-starfive-6.2
linux-starfive-6.5 (fixed in 6.5.0-1015.16~22.04.1)
linux-xilinx-zynqmp (fixed in 5.15.0-1030.34)

Timeline and source

Published on 23 February 2024 and last revised on 17 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

Other advisories for this package

linux has other advisories on record. If you are patching this one, these are worth checking on the same host:

DEBIAN-CVE-2022-4994 (published 30 Jul 2026)
CVE-2026-35233 (4.4 Medium, published 1 May 2026)
CVE-2026-21996 (3.3 Low, published 1 May 2026)
CVE-2026-21991 (5.5 Medium, published 16 Mar 2026)
CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
CGA-w6xv-3fg4-grm5 (published 29 Jan 2026)
CGA-4fpx-x3w2-4hfv (published 7 Jan 2026)
CGA-fv2v-4h6c-q367 (published 7 Jan 2026)

CVE-2023-52464 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

BellSoft — BELL-CVE-2023-52464 Base record — CVE-2023-52464 Debian — DEBIAN-CVE-2023-52464

Details

Severity Unknown

CVSS Score N/A

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

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2024-02-23

Updated 2026-08-20

Modified 2026-08-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
linux	—	5.15.0-102.112
linux-allwinner-5.19	—	—
linux-aws	—	5.15.0-1057.63
linux-aws-5.0	—	—
linux-aws-5.11	—	—
linux-aws-5.13	—	—
linux-aws-5.15	—	5.15.0-1057.63~20.04.1
linux-aws-5.19	—	—
linux-aws-5.3	—	—
linux-aws-5.4	—	5.4.0-1122.132~18.04.1
linux-aws-5.8	—	—
linux-aws-6.2	—	—
linux-aws-6.5	—	—
linux-aws-fips	—	5.15.0-1057.63+fips1
linux-aws-hwe	—	4.15.0-1167.180~16.04.1
linux-azure	—	5.15.0-1060.69
linux-azure-4.15	—	4.15.0-1176.191
linux-azure-5.11	—	—
linux-azure-5.13	—	—
linux-azure-5.15	—	5.15.0-1060.69~20.04.1
linux-azure-5.19	—	—
linux-azure-5.3	—	—
linux-azure-5.4	—	5.4.0-1127.134~18.04.1
linux-azure-5.8	—	—
linux-azure-6.2	—	—
linux-azure-6.5	—	6.5.0-1022.23~22.04.1
linux-azure-edge	—	—
linux-azure-fde	—	—
linux-azure-fde-5.19	—	—
linux-azure-fde-6.2	—	—
linux-azure-fde-6.8	—	—
linux-azure-fips	—	5.15.0-1060.69+fips1
linux-bluefield	—	—
linux-fips	—	5.15.0-102.112+fips1
linux-gcp	—	5.15.0-1055.63
linux-gcp-4.15	—	4.15.0-1161.178
linux-gcp-5.11	—	—
linux-gcp-5.13	—	—
linux-gcp-5.15	—	5.15.0-1055.63~20.04.1
linux-gcp-5.19	—	—
linux-gcp-5.3	—	—
linux-gcp-5.4	—	5.4.0-1126.135~18.04.1
linux-gcp-5.8	—	—
linux-gcp-6.2	—	—
linux-gcp-6.5	—	6.5.0-1022.24~22.04.1
linux-gcp-fips	—	5.15.0-1055.63+fips2
linux-gke	—	5.15.0-1054.59
linux-gke-4.15	—	—
linux-gke-5.15	—	—
linux-gke-5.4	—	—
linux-gkeop	—	5.15.0-1040.46
linux-gkeop-5.15	—	5.15.0-1040.46~20.04.1
linux-gkeop-5.4	—	—
linux-hwe	—	—
linux-hwe-5.11	—	—
linux-hwe-5.13	—	—
linux-hwe-5.15	—	5.15.0-102.112~20.04.1
linux-hwe-5.19	—	—
linux-hwe-5.4	—	5.4.0-175.195~18.04.1
linux-hwe-5.8	—	—
linux-hwe-6.2	—	—
linux-hwe-6.5	—	6.5.0-41.41~22.04.2
linux-hwe-edge	—	—
linux-ibm	—	5.15.0-1050.53
linux-ibm-5.15	—	5.15.0-1050.53~20.04.1
linux-ibm-5.4	—	5.4.0-1069.74~18.04.1
linux-intel-5.13	—	—
linux-intel-iot-realtime	—	5.15.0-1050.52
linux-intel-iotg	—	5.15.0-1052.58
linux-intel-iotg-5.15	—	5.15.0-1052.58~20.04.1
linux-iot	—	5.4.0-1034.35
linux-kvm	—	5.15.0-1054.59
linux-lowlatency	—	5.15.0-102.112
linux-lowlatency-hwe-5.15	—	5.15.0-102.112~20.04.1
linux-lowlatency-hwe-5.19	—	—
linux-lowlatency-hwe-6.2	—	—
linux-lowlatency-hwe-6.5	—	6.5.0-41.41.1~22.04.1
linux-nvidia	—	5.15.0-1048.48
linux-nvidia-6.2	—	—
linux-nvidia-6.5	—	6.5.0-1021.22
linux-nvidia-tegra	—	5.15.0-1025.25
linux-nvidia-tegra-5.15	—	5.15.0-1025.25~20.04.1
linux-nvidia-tegra-igx	—	5.15.0-1012.12
linux-oem	—	—
linux-oem-5.10	—	—
linux-oem-5.13	—	—
linux-oem-5.14	—	—
linux-oem-5.17	—	—
linux-oem-5.6	—	—
linux-oem-6.0	—	—
linux-oem-6.1	—	6.1.0-1035.35
linux-oem-6.5	—	6.5.0-1024.25
linux-oracle	—	5.15.0-1055.61
linux-oracle-5.0	—	—
linux-oracle-5.11	—	—
linux-oracle-5.13	—	—
linux-oracle-5.15	—	5.15.0-1055.61~20.04.1
linux-oracle-5.3	—	—
linux-oracle-5.4	—	5.4.0-1121.130~18.04.1
linux-oracle-5.8	—	—
linux-oracle-6.5	—	6.5.0-1024.24~22.04.1
linux-raspi	—	5.15.0-1050.53
linux-raspi-5.4	—	5.4.0-1106.118~18.04.1
linux-raspi-realtime	—	6.8.0-2001.1
linux-raspi2	—	—
linux-realtime	—	5.15.0-1058.66
linux-riscv	—	—
linux-riscv-5.11	—	—
linux-riscv-5.15	—	5.15.0-1053.57~20.04.1
linux-riscv-5.19	—	—
linux-riscv-5.8	—	—
linux-riscv-6.5	—	6.5.0-40.40.1~22.04.1
linux-starfive-5.19	—	—
linux-starfive-6.2	—	—
linux-starfive-6.5	—	6.5.0-1015.16~22.04.1
linux-xilinx-zynqmp	—	5.15.0-1030.34

References

REPORT https://ubuntu.com/security/CVE-2023-52464

REPORT https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601

REPORT https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6

REPORT https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405a

REPORT https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21

REPORT https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398

REPORT https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057

REPORT https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5

REPORT https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8

ADVISORY https://ubuntu.com/security/notices/USN-6688-1

ADVISORY https://ubuntu.com/security/notices/USN-6725-1

ADVISORY https://ubuntu.com/security/notices/USN-6726-1

REPORT https://www.cve.org/CVERecord?id=CVE-2023-52464

ADVISORY https://ubuntu.com/security/notices/USN-6725-2

ADVISORY https://ubuntu.com/security/notices/USN-6726-2

ADVISORY https://ubuntu.com/security/notices/USN-6726-3

ADVISORY https://ubuntu.com/security/notices/USN-6740-1

ADVISORY https://ubuntu.com/security/notices/USN-6818-1

ADVISORY https://ubuntu.com/security/notices/USN-6819-1

ADVISORY https://ubuntu.com/security/notices/USN-6818-2

ADVISORY https://ubuntu.com/security/notices/USN-6819-2

ADVISORY https://ubuntu.com/security/notices/USN-6819-3

ADVISORY https://ubuntu.com/security/notices/USN-6818-3

ADVISORY https://ubuntu.com/security/notices/USN-6818-4

ADVISORY https://ubuntu.com/security/notices/USN-6819-4

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🛡️ CVE-2023-52464 on Ubuntu — linux

Description

Distribution advisory

How this vulnerability can be exploited

CVSS metrics in full

Affected software

Timeline and source

References

Other advisories for this package

CVE-2023-52464 on other distributions

Is linux part of your stack?

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Company

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