Vulnerability in Kernel (CVE-2024-56534)

Summary

Vulnerability in Kernel (CVE-2024-56534). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 6.11.11, 6.12.2 or later.

Original description

The description as published by the source.

In the Linux kernel, the following vulnerability has been resolved:

isofs: avoid memory leak in iocharset

A memleak was found as below:

unreferenced object 0xffff0000d10164d8 (size 8):
comm "pool-udisksd", pid 108217, jiffies 4295408555
hex dump (first 8 bytes):
75 74 66 38 00 cc cc cc utf8....
backtrace (crc de430d31):
[] kmemleak_alloc+0xb8/0xc8
[] __kmalloc_node_track_caller_noprof+0x380/0x474
[] kstrdup+0x70/0xfc
[] isofs_parse_param+0x228/0x2c0 [isofs]
[] vfs_parse_fs_param+0xf4/0x164
[] vfs_parse_fs_string+0x8c/0xd4
[] vfs_parse_monolithic_sep+0xb0/0xfc
[] generic_parse_monolithic+0x30/0x3c
[] parse_monolithic_mount_data+0x40/0x4c
[] path_mount+0x6c4/0x9ec
[] do_mount+0xac/0xc4
[] __arm64_sys_mount+0x16c/0x2b0
[] invoke_syscall+0x7c/0x104
[] el0_svc_common.constprop.1+0xe0/0x104
[] do_el0_svc+0x2c/0x38
[] el0_svc+0x3c/0x1b8

The opt->iocharset is freed inside the isofs_fill_super function,
But there may be situations where it's not possible to
enter this function.

For example, in the get_tree_bdev_flags function,when
encountering the situation where "Can't mount, would change RO state,"
In such a case, isofs_fill_super will not have the opportunity
to be called,which means that opt->iocharset will not have the chance
to be freed,ultimately leading to a memory leak.

Let's move the memory freeing of opt->iocharset into
isofs_free_fc function.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2024-56534 has been found in Kernel.
Risk of unauthorized operations or information disclosure.
What to do: upgrade Kernel to 6.11.11, 6.12.2 or later.
If unsure, ask your IT team or search "Kernel CVE-2024-56534" on the vendor's site.

CVE-2024-56534 (Kernel)
Attack vector: local / no user interaction
Patched: 6.11.11, 6.12.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (unclassified) exists in Kernel.

📍 Affected scope

Check the vendor advisory for the affected versions of Kernel.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 6.11.11, 6.12.2.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'Kernel' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
grep -r 'Kernel' . | grep -v node_modules
```
リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で Kernel を grep し、稼働しているサービス・バージョンを把握する。
2
Apply patch patch
```
Upgrade Kernel to 6.11.11, 6.12.2
```
ステージング環境で 6.11.11, 6.12.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
3
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"6.10.0"},{"fixed":"6.11.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.12.0"},{"fixed":"6.12.2"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

BellSoft Alpaquita BELL-CVE-2024-56534 linux-lts Fixed in: 6.12.41-r0
Debian DEBIAN-CVE-2024-56534 linux Fixed in: 6.12.3-1