🛡️ CVE-2023-52488 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: serial: sc16is7xx: convert from _raw_ to _noinc_ regmap functions for FIFO The SC16IS7XX IC supports a burst mode to access the FIFOs where the initial register address is sent ($00), followed by all the FIFO data without having to resend the register address each time. In this mode, the IC doesn't increment the register address for each R/W byte. The regmap_raw_read() and regmap_raw_write() are functions which can perform IO over multiple registers. They are currently used to read/write from/to the FIFO, and although they operate correctly in this burst mode on the SPI bus, they would corrupt the regmap cache if it was not disabled manually. The reason is that when the R/W size is more than 1 byte, these functions assume that the register address is incremented and handle the cache accordingly. Convert FIFO R/W functions to use the regmap _noinc_ versions in order to remove the manual cache control which was a workaround when using the _raw_ versions. FIFO registers are properly declared as volatile so cache will not be used/updated for FIFO accesses.

Distribution advisory

This page covers CVE-2023-52488 as tracked by Ubuntu, for the package linux. The fix is available in version 5.15.0-116.126; 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 none, integrity none, 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:N/I:N/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: None.
Integrity impact: None.
Availability impact: High — total loss, or loss the attacker controls.

Affected software

UBUNTU-CVE-2023-52488 is recorded against 117 packages.

linux (fixed in 5.15.0-116.126)
linux-allwinner-5.19
linux-aws (fixed in 5.15.0-1065.71)
linux-aws-5.0
linux-aws-5.11
linux-aws-5.13
linux-aws-5.15 (fixed in 5.15.0-1065.71~20.04.1)
linux-aws-5.19
linux-aws-5.3
linux-aws-5.4 (fixed in 5.4.0-1136.146~18.04.1)
linux-aws-5.8
linux-aws-6.2
linux-aws-6.5
linux-aws-fips (fixed in 5.15.0-1065.71+fips1)
linux-aws-hwe (fixed in 4.15.0-1178.191~16.04.1)
linux-azure (fixed in 5.15.0-1068.77)
linux-azure-4.15 (fixed in 4.15.0-1186.201)
linux-azure-5.11
linux-azure-5.13
linux-azure-5.15 (fixed in 5.15.0-1068.77~20.04.1)
linux-azure-5.19
linux-azure-5.3
linux-azure-5.4 (fixed in 5.4.0-1142.149~18.04.1)
linux-azure-5.8

Show the remaining 93 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 5.15.0-1068.77+fips1)
linux-bluefield
linux-fips (fixed in 5.15.0-115.125+fips1)
linux-gcp (fixed in 5.15.0-1064.72)
linux-gcp-4.15 (fixed in 4.15.0-1171.188)
linux-gcp-5.11
linux-gcp-5.13
linux-gcp-5.15 (fixed in 5.15.0-1065.73~20.04.1)
linux-gcp-5.19
linux-gcp-5.3
linux-gcp-5.4 (fixed in 5.4.0-1140.149~18.04.1)
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 5.15.0-1064.72+fips1)
linux-gke (fixed in 5.15.0-1062.68)
linux-gke-4.15
linux-gke-5.15
linux-gke-5.4
linux-gkeop (fixed in 5.15.0-1048.55)
linux-gkeop-5.15 (fixed in 5.15.0-1048.55~20.04.1)
linux-gkeop-5.4
linux-hwe
linux-hwe-5.11
linux-hwe-5.13
linux-hwe-5.15 (fixed in 5.15.0-116.126~20.04.1)
linux-hwe-5.19
linux-hwe-5.4 (fixed in 5.4.0-202.222~18.04.1)
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 5.15.0-1058.61)
linux-ibm-5.15 (fixed in 5.15.0-1058.61~20.04.1)
linux-ibm-5.4 (fixed in 5.4.0-1083.88~18.04.1)
linux-intel-5.13
linux-intel-iot-realtime (fixed in 5.15.0-1058.60)
linux-intel-iotg (fixed in 5.15.0-1060.66)
linux-intel-iotg-5.15 (fixed in 5.15.0-1060.66~20.04.1)
linux-iot (fixed in 5.4.0-1045.46)
linux-kvm (fixed in 5.15.0-1062.67)
linux-lowlatency (fixed in 5.15.0-116.126)
linux-lowlatency-hwe-5.15 (fixed in 5.15.0-116.126~20.04.1)
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-lts-xenial (fixed in 4.4.0-266.300~14.04.1)
linux-nvidia (fixed in 5.15.0-1060.61)
linux-nvidia-6.2
linux-nvidia-6.5 (fixed in 6.5.0-1021.22)
linux-nvidia-tegra (fixed in 5.15.0-1026.26)
linux-nvidia-tegra-5.15 (fixed in 5.15.0-1027.27~20.04.1)
linux-nvidia-tegra-igx (fixed in 5.15.0-1015.15)
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
linux-oem-6.5 (fixed in 6.5.0-1024.25)
linux-oracle (fixed in 5.15.0-1063.69)
linux-oracle-5.0
linux-oracle-5.11
linux-oracle-5.13
linux-oracle-5.15 (fixed in 5.15.0-1063.69~20.04.1)
linux-oracle-5.3
linux-oracle-5.4 (fixed in 5.4.0-1135.144~18.04.1)
linux-oracle-5.8
linux-oracle-6.5 (fixed in 6.5.0-1024.24~22.04.1)
linux-raspi (fixed in 5.15.0-1058.61)
linux-raspi-5.4 (fixed in 5.4.0-1120.132~18.04.1)
linux-raspi-realtime (fixed in 6.8.0-2001.1)
linux-raspi2
linux-realtime (fixed in 5.15.0-1066.74)
linux-riscv
linux-riscv-5.11
linux-riscv-5.15 (fixed in 5.15.0-1061.65~20.04.1)
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 5.15.0-1035.39)

Timeline and source

Published on 11 March 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-w6xv-3fg4-grm5 (published 29 Jan 2026)
CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
CGA-wf5v-37v7-wvrh (published 7 Jan 2026)
CGA-58q9-gmq4-72q9 (published 7 Jan 2026)

CVE-2023-52488 on other distributions

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

BellSoft — BELL-CVE-2023-52488 Base record — CVE-2023-52488 Debian — DEBIAN-CVE-2023-52488

Details

Severity Unknown

CVSS Score N/A

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

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2024-03-11

Updated 2026-08-20

Modified 2026-08-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
linux	—	5.15.0-116.126
linux-allwinner-5.19	—	—
linux-aws	—	5.15.0-1065.71
linux-aws-5.0	—	—
linux-aws-5.11	—	—
linux-aws-5.13	—	—
linux-aws-5.15	—	5.15.0-1065.71~20.04.1
linux-aws-5.19	—	—
linux-aws-5.3	—	—
linux-aws-5.4	—	5.4.0-1136.146~18.04.1
linux-aws-5.8	—	—
linux-aws-6.2	—	—
linux-aws-6.5	—	—
linux-aws-fips	—	5.15.0-1065.71+fips1
linux-aws-hwe	—	4.15.0-1178.191~16.04.1
linux-azure	—	5.15.0-1068.77
linux-azure-4.15	—	4.15.0-1186.201
linux-azure-5.11	—	—
linux-azure-5.13	—	—
linux-azure-5.15	—	5.15.0-1068.77~20.04.1
linux-azure-5.19	—	—
linux-azure-5.3	—	—
linux-azure-5.4	—	5.4.0-1142.149~18.04.1
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	—	5.15.0-1068.77+fips1
linux-bluefield	—	—
linux-fips	—	5.15.0-115.125+fips1
linux-gcp	—	5.15.0-1064.72
linux-gcp-4.15	—	4.15.0-1171.188
linux-gcp-5.11	—	—
linux-gcp-5.13	—	—
linux-gcp-5.15	—	5.15.0-1065.73~20.04.1
linux-gcp-5.19	—	—
linux-gcp-5.3	—	—
linux-gcp-5.4	—	5.4.0-1140.149~18.04.1
linux-gcp-5.8	—	—
linux-gcp-6.2	—	—
linux-gcp-6.5	—	6.5.0-1022.24~22.04.1
linux-gcp-fips	—	5.15.0-1064.72+fips1
linux-gke	—	5.15.0-1062.68
linux-gke-4.15	—	—
linux-gke-5.15	—	—
linux-gke-5.4	—	—
linux-gkeop	—	5.15.0-1048.55
linux-gkeop-5.15	—	5.15.0-1048.55~20.04.1
linux-gkeop-5.4	—	—
linux-hwe	—	—
linux-hwe-5.11	—	—
linux-hwe-5.13	—	—
linux-hwe-5.15	—	5.15.0-116.126~20.04.1
linux-hwe-5.19	—	—
linux-hwe-5.4	—	5.4.0-202.222~18.04.1
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	—	5.15.0-1058.61
linux-ibm-5.15	—	5.15.0-1058.61~20.04.1
linux-ibm-5.4	—	5.4.0-1083.88~18.04.1
linux-intel-5.13	—	—
linux-intel-iot-realtime	—	5.15.0-1058.60
linux-intel-iotg	—	5.15.0-1060.66
linux-intel-iotg-5.15	—	5.15.0-1060.66~20.04.1
linux-iot	—	5.4.0-1045.46
linux-kvm	—	5.15.0-1062.67
linux-lowlatency	—	5.15.0-116.126
linux-lowlatency-hwe-5.15	—	5.15.0-116.126~20.04.1
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-lts-xenial	—	4.4.0-266.300~14.04.1
linux-nvidia	—	5.15.0-1060.61
linux-nvidia-6.2	—	—
linux-nvidia-6.5	—	6.5.0-1021.22
linux-nvidia-tegra	—	5.15.0-1026.26
linux-nvidia-tegra-5.15	—	5.15.0-1027.27~20.04.1
linux-nvidia-tegra-igx	—	5.15.0-1015.15
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	—	—
linux-oem-6.5	—	6.5.0-1024.25
linux-oracle	—	5.15.0-1063.69
linux-oracle-5.0	—	—
linux-oracle-5.11	—	—
linux-oracle-5.13	—	—
linux-oracle-5.15	—	5.15.0-1063.69~20.04.1
linux-oracle-5.3	—	—
linux-oracle-5.4	—	5.4.0-1135.144~18.04.1
linux-oracle-5.8	—	—
linux-oracle-6.5	—	6.5.0-1024.24~22.04.1
linux-raspi	—	5.15.0-1058.61
linux-raspi-5.4	—	5.4.0-1120.132~18.04.1
linux-raspi-realtime	—	6.8.0-2001.1
linux-raspi2	—	—
linux-realtime	—	5.15.0-1066.74
linux-riscv	—	—
linux-riscv-5.11	—	—
linux-riscv-5.15	—	5.15.0-1061.65~20.04.1
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	—	5.15.0-1035.39

References

REPORT https://ubuntu.com/security/CVE-2023-52488

REPORT https://git.kernel.org/linus/dbf4ab821804df071c8b566d9813083125e6d97b

REPORT https://git.kernel.org/stable/c/416b10d2817c94db86829fb92ad43ce7d002c573

REPORT https://git.kernel.org/stable/c/084c24e788d9cf29c55564de368bf5284f2bb5db

REPORT https://git.kernel.org/stable/c/aa7cb4787698add9367b19f7afc667662c9bdb23

REPORT https://git.kernel.org/stable/c/dbf4ab821804df071c8b566d9813083125e6d97b

REPORT https://www.cve.org/CVERecord?id=CVE-2023-52488

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

ADVISORY https://ubuntu.com/security/notices/USN-6898-1

ADVISORY https://ubuntu.com/security/notices/USN-6898-2

ADVISORY https://ubuntu.com/security/notices/USN-6898-3

ADVISORY https://ubuntu.com/security/notices/USN-6898-4

ADVISORY https://ubuntu.com/security/notices/USN-6917-1

ADVISORY https://ubuntu.com/security/notices/USN-6919-1

ADVISORY https://ubuntu.com/security/notices/USN-6927-1

ADVISORY https://ubuntu.com/security/notices/USN-7019-1

ADVISORY https://ubuntu.com/security/notices/USN-7159-1

ADVISORY https://ubuntu.com/security/notices/USN-7159-2

ADVISORY https://ubuntu.com/security/notices/USN-7159-3

ADVISORY https://ubuntu.com/security/notices/USN-7159-4

ADVISORY https://ubuntu.com/security/notices/USN-7159-5

ADVISORY https://ubuntu.com/security/notices/USN-7195-1

ADVISORY https://ubuntu.com/security/notices/USN-7195-2

ADVISORY https://ubuntu.com/security/notices/USN-7332-1

ADVISORY https://ubuntu.com/security/notices/USN-7342-1

ADVISORY https://ubuntu.com/security/notices/USN-7344-1

ADVISORY https://ubuntu.com/security/notices/USN-7332-2

ADVISORY https://ubuntu.com/security/notices/USN-7332-3

ADVISORY https://ubuntu.com/security/notices/USN-7344-2

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🛡️ CVE-2023-52488 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-2023-52488 on other distributions

Track new vulnerabilities in linux

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Company

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