CVE-2023-52752: smb: client: fix use-after-free bug in cifs_debug_data_proc_show()

Analyzed

AliasesSUSE-SU-2024:3764-1SUSE-SU-2024:3775-1SUSE-SU-2024:3885-1+2 more

Published 21-05-2024Last modified 05-08-2026

Vulnerability summary

CVE-2023-52752 is a high (CVSS 7.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.9% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

7.8/10

010

High · v3.1 (CVE.org)

EPSS score

0.25%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 156 · Related 155

DLA-4178-1 SUSE-SU-2024:2360-1 SUSE-SU-2024:2362-1 SUSE-SU-2024:2365-1 SUSE-SU-2024:2372-1 SUSE-SU-2024:2381-1+94 more

Showing 100 of 156.

Timeline

21-05-2024
PublishedVulnerability first disclosed.
05-08-2026
Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free bug in cifs_debug_data_proc_show() Skip SMB sessions that are being teared down (e.g. @ses->ses_status == SES_EXITING) in cifs_debug_data_proc_show() to avoid use-after-free in @ses. This fixes the following GPF when reading from /proc/fs/cifs/DebugData while mounting and umounting [ 816.251274] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6d81: 0000 [#1] PREEMPT SMP NOPTI ... [ 816.260138] Call Trace: [ 816.260329] <TASK> [ 816.260499] ? die_addr+0x36/0x90 [ 816.260762] ? exc_general_protection+0x1b3/0x410 [ 816.261126] ? asm_exc_general_protection+0x26/0x30 [ 816.261502] ? cifs_debug_tcon+0xbd/0x240 [cifs] [ 816.261878] ? cifs_debug_tcon+0xab/0x240 [cifs] [ 816.262249] cifs_debug_data_proc_show+0x516/0xdb0 [cifs] [ 816.262689] ? seq_read_iter+0x379/0x470 [ 816.262995] seq_read_iter+0x118/0x470 [ 816.263291] proc_reg_read_iter+0x53/0x90 [ 816.263596] ? srso_alias_return_thunk+0x5/0x7f [ 816.263945] vfs_read+0x201/0x350 [ 816.264211] ksys_read+0x75/0x100 [ 816.264472] do_syscall_64+0x3f/0x90 [ 816.264750] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 816.265135] RIP: 0033:0x7fd5e669d381

CVSS metrics

4 scores · 4 sources · 1 version

v3.17.8

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.25% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu116 products

linuxAll versions (No fix recorded) | < 4.4.0-257.291 | < 4.15.0-227.239 | < 5.4.0-192.212 | < 5.15.0-117.127
linux-allwinner-5.19All versions (No fix recorded)
linux-aws< 4.4.0-1134.140 | < 4.4.0-1172.187 | < 4.15.0-1170.183 | < 5.4.0-1130.140 | < 5.15.0-1066.72
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)

linux-aws-5.13All versions (No fix recorded)
linux-aws-5.15< 5.15.0-1066.72~20.04.1
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1130.140~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.2All versions (No fix recorded)
linux-aws-6.5All versions (No fix recorded)
linux-aws-fips< 4.15.0-2109.115 | All versions (No fix recorded) | < 5.4.0-1130.140+fips1 | < 5.15.0-1066.72+fips1
linux-aws-hwe< 4.15.0-1170.183~16.04.1
linux-azure< 4.15.0-1179.194~14.04.1 | < 4.15.0-1179.194~16.04.1 | All versions (No fix recorded) | < 5.4.0-1135.142 | < 5.15.0-1070.79
linux-azure-4.15< 4.15.0-1179.194
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1070.79~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1135.142~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.2All versions (No fix recorded)
linux-azure-6.5All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1070.79.1
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.2All versions (No fix recorded)
linux-azure-fips< 4.15.0-2088.94 | All versions (No fix recorded) | < 5.4.0-1135.142+fips1 | < 5.15.0-1070.79+fips1
linux-bluefield< 5.4.0-1090.97 | < 5.15.0-1048.50
linux-fips< 4.4.0-1103.110 | All versions (No fix recorded) | < 4.15.0-1125.136 | < 5.4.0-1104.114 | < 5.15.0-117.127+fips1
linux-gcp< 4.15.0-1164.181~16.04.1 | All versions (No fix recorded) | < 5.4.0-1134.143 | < 5.15.0-1065.73
linux-gcp-4.15< 4.15.0-1164.181
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1065.73~20.04.1
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1134.143~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.2All versions (No fix recorded)
linux-gcp-6.5All versions (No fix recorded)
linux-gcp-fips< 4.15.0-2072.77 | All versions (No fix recorded) | < 5.4.0-1134.143+fips1 | < 5.15.0-1065.73+fips1
linux-gkeAll versions (No fix recorded) | < 5.15.0-1063.69
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15All versions (No fix recorded)
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1097.101 | < 5.15.0-1049.56
linux-gkeop-5.15< 5.15.0-1049.56~20.04.1
linux-gkeop-5.4All versions (No fix recorded)
linux-hwe< 4.15.0-227.239~16.04.1 | All versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-117.127~20.04.1
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.4< 5.4.0-192.212~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.2All versions (No fix recorded)
linux-hwe-6.5All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1077.82 | < 5.15.0-1059.62
linux-ibm-5.15< 5.15.0-1059.62~20.04.1
linux-ibm-5.4< 5.4.0-1077.82~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1059.61
linux-intel-iotg< 5.15.0-1061.67
linux-intel-iotg-5.15< 5.15.0-1061.67~20.04.1
linux-iot< 5.4.0-1042.43
linux-kvm< 4.4.0-1135.145 | < 4.15.0-1154.159 | < 5.4.0-1118.125 | < 5.15.0-1063.68
linux-lowlatency< 5.15.0-117.127
linux-lowlatency-hwe-5.15< 5.15.0-117.127~20.04.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.2All versions (No fix recorded)
linux-lowlatency-hwe-6.5All versions (No fix recorded)
linux-lts-xenial< 4.4.0-257.291~14.04.1
linux-nvidia< 5.15.0-1061.62
linux-nvidia-6.2All versions (No fix recorded)
linux-nvidia-6.5< 6.5.0-1014.14
linux-nvidia-tegra< 5.15.0-1027.27
linux-nvidia-tegra-5.15< 5.15.0-1027.27~20.04.1
linux-nvidia-tegra-igx< 5.15.0-1015.15
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oem-6.1All versions (No fix recorded)
linux-oem-6.5All versions (No fix recorded)
linux-oracle< 4.15.0-1133.144~16.04.1 | < 4.15.0-1133.144 | < 5.4.0-1129.138 | < 5.15.0-1064.70
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1065.71~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1129.138~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-oracle-6.5All versions (No fix recorded)
linux-raspi< 5.4.0-1114.126 | < 5.15.0-1059.62
linux-raspi-5.4< 5.4.0-1114.126~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1067.75
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1062.66~20.04.1
linux-riscv-5.19All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-riscv-6.5All versions (No fix recorded)
linux-starfive-5.19All versions (No fix recorded)
linux-starfive-6.2All versions (No fix recorded)
linux-starfive-6.5All versions (No fix recorded)
linux-xilinx-zynqmp< 5.4.0-1049.53 | < 5.15.0-1035.39

Show all 116

Suse3 products

kernel-livepatch-SLE15-SP6_Update_4&distro=SUSE Linux Enterprise Live Patching 15 SP6< 2-150600.13.6.1
kernel-livepatch-SLE15-SP6-RT_Update_2&distro=SUSE Linux Enterprise Live Patching 15 SP6< 2-150600.1.6.1
kernel-livepatch-SLE15-SP6-RT_Update_3&distro=SUSE Linux Enterprise Live Patching 15 SP6< 2-150600.2.1

Debian2 products

linux< 6.1.64-1 | < 6.6.8-1
debian_linuxEOL11.0

Linux2 products

linux≥ 7f48558e6489d032b1584b0cc9ac4bb11072c034, < 2abdf136784b7edaec7ffe0f4b461b63f9c4c4de | ≥ 7f48558e6489d032b1584b0cc9ac4bb11072c034, < 336a066990bb3962c46daf574ace596bda9303ce | ≥ 7f48558e6489d032b1584b0cc9ac4bb11072c034, < 558817597d5fbd7af31f891b67b0fd20f0d047b7 | ≥ 7f48558e6489d032b1584b0cc9ac4bb11072c034, < 89929ea46f9cc11ba66d2c64713aa5d5dc723b09 | ≥ 7f48558e6489d032b1584b0cc9ac4bb11072c034, < 0ab6f842452ce2cae04209d4671ac6289d0aef8a | ≥ 7f48558e6489d032b1584b0cc9ac4bb11072c034, < d328c09ee9f15ee5a26431f5aad7c9239fa85e62 | a67172a013953664b1dad03c648200c70b90506c | ≥ 3.12.48, < 3.13 | 3.13
linux_kernel< 5.10.237 | ≥ 5.11, < 5.15.181 | ≥ 5.16, < 6.1.64 | ≥ 6.2, < 6.5.13 | ≥ 6.6, < 6.6.3

4 vendors · 123 products