5.5

CVE-2023-53271: ubi: Fix unreferenced object reported by kmemleak in ubi_resize_volume()

Modified
AliasesUBUNTU-CVE-2023-53271DEBIAN-CVE-2023-53271
Published 16-09-2025Last modified 11-05-2026

Vulnerability summary

CVE-2023-53271 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.16%
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 1 · Related 1
SUSE-SU-2025:4189-1

Timeline

  1. 16-09-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ubi: Fix unreferenced object reported by kmemleak in ubi_resize_volume() There is a memory leaks problem reported by kmemleak: unreferenced object 0xffff888102007a00 (size 128): comm "ubirsvol", pid 32090, jiffies 4298464136 (age 2361.231s) hex dump (first 32 bytes): ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ backtrace: [<ffffffff8176cecd>] __kmalloc+0x4d/0x150 [<ffffffffa02a9a36>] ubi_eba_create_table+0x76/0x170 [ubi] [<ffffffffa029764e>] ubi_resize_volume+0x1be/0xbc0 [ubi] [<ffffffffa02a3321>] ubi_cdev_ioctl+0x701/0x1850 [ubi] [<ffffffff81975d2d>] __x64_sys_ioctl+0x11d/0x170 [<ffffffff83c142a5>] do_syscall_64+0x35/0x80 [<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 This is due to a mismatch between create and destroy interfaces, and in detail that "new_eba_tbl" created by ubi_eba_create_table() but destroyed by kfree(), while will causing "new_eba_tbl->entries" not freed. Fix it by replacing kfree(new_eba_tbl) with ubi_eba_destroy_table(new_eba_tbl)

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.16% 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

Affected systems

Version check

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

Ubuntu122 products
  • linuxAll versions (No fix recorded) | < 5.4.0-152.169 | < 5.15.0-79.86
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1104.112 | < 5.15.0-1042.47
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 799dca34ac543485f581bd8464ec9b1c4f0f852a, < 09780a44093b53f9cbca76246af2e4ff0884e512 | ≥ 799dca34ac543485f581bd8464ec9b1c4f0f852a, < 26ec2d66aecab8ff997b912c20247fedba4f5740 | ≥ 799dca34ac543485f581bd8464ec9b1c4f0f852a, < 07b60f7452d2fa731737552937cb81821919f874 | ≥ 799dca34ac543485f581bd8464ec9b1c4f0f852a, < 31d60afe2cc2b712dbefcaab6b7d6a47036f844e | ≥ 799dca34ac543485f581bd8464ec9b1c4f0f852a, < 95a72417dd13ebcdcb1bd0c5d4d15f7c5bfbb288 | ≥ 799dca34ac543485f581bd8464ec9b1c4f0f852a, < 27b760b81951d8d5e5c952a696af8574052b0709 | ≥ 799dca34ac543485f581bd8464ec9b1c4f0f852a, < 5c0c81a313492b83bd0c038b8839b0e04eb87563 | ≥ 799dca34ac543485f581bd8464ec9b1c4f0f852a, < 1e591ea072df7211f64542a09482b5f81cb3ad27 | 4.9
  • linux_kernel≥ 4.9, < 4.14.308 | ≥ 4.15, < 4.19.276 | ≥ 4.20, < 5.4.235 | ≥ 5.5, < 5.10.173 | ≥ 5.11, < 5.15.100 | ≥ 5.16, < 6.1.18 | ≥ 6.2, < 6.2.5
Debian1 product
  • linux< 6.1.20-1

3 vendors · 125 products

References

12 links
Show all 12 references